SECURITIES AND EXCHANGE COMMISSION

FORM S-3

REGISTRATION STATEMENT
UNDER
THE SECURITIES ACT OF 1933

UNITED COMMUNITY BANKS, INC.

Copies to:

Approximate date of commencement of proposed sale to the public: From time to time after this registration statement becomes effective.

If the only securities being registered on this form are being offered pursuant to dividend or interest reinvestment plans, please check the following box. o

If any of the securities being registered on this form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933, other than securities offered only in connection with dividend or interest reinvestment plans, check the following box. x

If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. o

If this Form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. o

If delivery of the prospectus is expected to be made pursuant to Rule 434, please check the following. o

CALCULATION OF REGISTRATION FEE

     The Registrant hereby amends this registration statement on such date or dates as may be necessary to delay its effective date until the Registrant shall file a further amendment which specifically states that this registration statement shall thereafter become effective in accordance with Section 8(a) of the Securities Act of 1933 or until this registration statement shall become effective on such date as the Commission acting pursuant to said Section 8(a) may determine.

The information in this prospectus is not complete and may be changed. We may not sell these securities until the registration statement filed with the Securities and Exchange Commission is effective. This prospectus is not an offer to sell these securities and it is not soliciting an offer to buy these securities in any state where the offer or sale is not permitted.

SUBJECT TO COMPLETION, DATED JUNE____, 2004

PROSPECTUS

$150,000,000

     The following are the types of securities that we may offer and sell from time to time:

This prospectus provides you with a general description of the securities we may offer.

Our common stock is listed on the Nasdaq National Market under the symbol “UCBI”. The aggregate initial offering price of the securities that we offer will not exceed $150,000,000. We will offer the securities in amounts, at prices and on terms to be determined by market conditions at the time of our offering. The specific terms for each security will be included in a prospectus supplement which will contain information on the offering terms, the initial public offering price, and the net proceeds we will receive from securities sales.

For more detail, see “Description of Common Stock”, “Description of Preferred Stock”, “Description of Debt Securities” and “Description of Warrants”.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or passed upon the adequacy or accuracy of this prospectus. Any representation to the contrary is a criminal offense. An investment in securities of United Community Banks, Inc. is not insured by the Federal Deposit Insurance Corporation or any other government agency.

We may sell securities directly to you, through agents we select, or through underwriters and dealers we select. If we use agents, underwriters or dealers to sell the securities, we will name them and describe their compensation in a prospectus supplement. Our net proceeds from securities sales will be the initial public offering price minus any applicable underwriter’s discount, agent’s commission, and other offering expenses.

The date of this prospectus is June __, 2004.

TABLE OF CONTENTS

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WHERE YOU CAN FIND MORE INFORMATION

     We are subject to the information requirements of the Securities Exchange Act of 1934, which means that we are required to file reports, proxy statements, and other information, all of which are available at the Public Reference Section of the Securities and Exchange Commission at Room 1024, 450 Fifth Street, NW, Washington, D.C. 20549. You may also obtain copies of the reports, proxy statements, and other information from the Public Reference Section of the SEC, at prescribed rates, by calling 1-800-SEC-0330. The SEC maintains a website on the Internet at http://www.sec.gov where you can access reports, proxy, information and registration statements, and other information regarding registrants that file electronically with the SEC through the EDGAR system.

     We have filed a registration statement on Form S-3 to register the securities to be issued pursuant to this prospectus. As allowed by SEC rules, this prospectus does not contain all of the information you can find in the registration statement or the exhibits to the registration statement.

INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE

     This prospectus incorporates important business and financial information about United which is not included in or delivered with this prospectus. The following documents previously filed by United under the Securities Exchange Act of 1934 are incorporated by reference into this prospectus:

     Documents incorporated by reference are available from United without charge, excluding all exhibits, unless an exhibit has been specifically incorporated by reference in this prospectus. You may obtain documents incorporated by reference in this prospectus by requesting them in writing or by telephone from Rex S. Schuette, Chief Financial Officer, United Community Banks, Inc., at P.O. Box 398, 63 Highway 515, Blairsville, Georgia 30512, telephone number (706) 745-2151.

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ABOUT THIS PROSPECTUS

     This prospectus is part of a registration statement that United Community Banks, Inc filed with the Securities and Exchange Commission using a shelf registration process. Under this shelf registration process, we may, from time to time, sell any combination of the securities described in this prospectus in one or more offerings up to a total dollar amount of $150,000,000. We may sell:

     This prospectus provides you with a general description of the common stock, preferred stock, debt securities, and warrants. Each time we sell common stock, preferred stock, debt securities, or warrants, we will provide an applicable prospectus supplement that will contain specific information about the terms of that offering. That prospectus supplement may include a discussion of any risk factors or other special considerations that apply to those securities. The applicable prospectus supplement may also add, update, or change information in this prospectus. If there is any inconsistency between the information in this prospectus and any prospectus supplement, you should rely on the information in the prospectus supplement. You should read this prospectus and the applicable prospectus supplement together with the additional information described under the heading “Where You Can Find More Information”.

     The registration statement containing this prospectus, including exhibits to the registration statement, provides additional information about us and the securities offered under this prospectus. The registration statement can be read at the SEC website or at the SEC’s office mentioned under the heading “Where You Can Find More Information”.

BUSINESS

     United Community Banks, Inc., Blairsville, Georgia, is the third-largest bank holding company headquartered in Georgia. Substantially all of our activities are conducted through our three wholly-owned subsidiaries, United Community Bank, a Georgia bank, United Community Bank, a North Carolina bank and United Community Bank Tennessee, a Tennessee bank. Our subsidiaries operate as 21 separately managed community banks with 78 locations throughout north Georgia, metro Atlanta, coastal Georgia, western North Carolina and east Tennessee. Our banks provide customary types of banking services, such as checking accounts, savings accounts, and time deposits. They also engage in commercial and consumer lending, make secured and unsecured loans, and provide other financial services.

     We also operate, as a division of our Georgia bank subsidiary, United Community Mortgage Services, a full-service retail mortgage lending operation approved as a seller/servicer for Fannie Mae and the Federal Home Mortgage Corporation, and Brintech, Inc., a New Smyrna Beach, Florida based consulting firm for the financial services industry. Brintech provides consulting, advisory and implementation services in the areas of strategic planning, profitability improvement, technology,

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efficiency, security, network, networking, Internet banking, website development, marketing, core processing, and telecommunications. Additionally, we provide retail brokerage services through an affiliation with a third party broker/dealer.

     At March 31, 2004, we had total consolidated assets of approximately $4.1 billion, total consolidated loans of approximately $3.1 billion, total consolidated deposits of approximately $3.1 billion, and total consolidated stockholders’ equity of approximately $311 million.

     United was incorporated in 1987 as a Georgia corporation. Our principal executive offices are located at Post Office Box 398, 63 Highway 515, Blairsville, Georgia 30512, and our telephone number is (706) 745-2151. Our company website is www.ucbi.com.

     Other financial and other information about us is set forth on our Annual Report on Form 10-K for the year ended December 31, 2003, our proxy statement for our 2004 annual meeting and our Quarterly Report on Form 10-Q for the quarter ended March 31, 2004, each of which is incorporated herein by reference.

USE OF PROCEEDS

     Unless otherwise specified in the applicable prospectus supplement, we will use the net proceeds we receive from any offering of these securities for general corporate purposes, which may include funding our bank and non-bank subsidiaries, financing business expansion, refinancing or extending the maturity of debt obligations, investments at the holding company level and stock repurchases. The applicable prospectus supplement will provide more detail on the use of proceeds of any specific offering.

RATIOS OF EARNINGS TO FIXED CHARGES

     The following table sets forth our consolidated ratio of earnings to fixed charges for the periods indicated.

     Earnings consist of net income plus income taxes and fixed charges. Fixed charges consist of interest expense on deposits and indebtedness, and an estimated amount of rental expense that is deemed to be representative of the interest factor.

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     The following is a general description of the terms and provisions of the securities we may offer and sell by this prospectus. These summaries are not meant to be a complete description of each security. This prospectus and any accompanying prospectus supplement will contain the material terms and conditions for each security. The accompanying prospectus supplement may add to, update or change the terms and conditions of the securities as described in this prospectus.

DESCRIPTION OF COMMON STOCK

     Our authorized common stock currently consists of 100,000,000 shares, $1.00 par value per share. All voting rights are vested in the holders of the common stock. Each holder of common stock is entitled to one vote per share on any issue requiring a vote at any meeting. The shares do not have cumulative voting rights. Subject to the right of holders of our Series A Non-Cumulative Preferred Stock to receive dividends, all shares of our common stock are entitled to share equally in any dividends that our board of directors may declare on our common stock from sources legally available for distribution. The determination and declaration of dividends is within the discretion of our board of directors. Upon liquidation, holders of our common stock will be entitled to receive on a pro rata basis, after payment or provision for payment of all of our debts and liabilities, and after all distributions payments are made to holders of our Series A Non-Cumulative Preferred Stock, all of our assets available for distribution, in cash or in kind.

     As of June 15, 2004, 36,620,754 shares of common stock were issued and outstanding, exclusive of 374,362 shares held as treasury shares, 372,000 shares were reserved for issuance upon the conversion of subordinated debt and 2,181,298 shares of common stock were reserved for issuance upon the exercise of outstanding options and vesting of restricted stock.

Matters Relevant to Common Stock

  Ability to Consider Other Constituencies

     Our articles of incorporation permit our board of directors, in determining what is believed to be in the best interest of United and our shareholders, to consider the interests of our employees, customers, suppliers and creditors, the communities in which our offices are located and all other factors that they consider pertinent, in addition to considering the effects of any actions on United and our shareholders. This provision permits our board of directors to consider numerous judgmental or subjective factors affecting a proposal, including some non-financial matters, and on the basis of these considerations may oppose a business combination or some other transaction which, viewed exclusively from a financial perspective, might be attractive to some, or even a majority, of our shareholders.

  Amendments to Articles of Incorporation and Bylaws

     Our articles of incorporation specifically provide that neither the articles of incorporation nor the bylaws of United may be amended without the affirmative vote the holders of two-thirds of the shares issued and outstanding and entitled to vote thereon, except for provisions relating to increasing the number of authorized shares of our common and preferred stock. This provision could allow the holders of 33.4% of our outstanding capital stock to exercise an effective veto over a proposed amendment to the articles or bylaws, despite the fact that the holders of 66.6% of the shares favor the proposal. This provision protects, among other things, the defensive measures included in our articles of incorporation and bylaws by making more difficult future amendments to the articles of incorporation and bylaws that could result in the deletion or revision of such defensive measures.

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  Supermajority Approval of Interested Business Combinations

     Our articles of incorporation provide that if a proposed business combination between United and any interested shareholder is not approved by three-fourths of all of our directors then in office, the business combination must be approved by the affirmative vote of the holders of at least 75% of the outstanding shares of our common stock, including the affirmative vote of the holders of at least 75% of the outstanding shares of common stock held by shareholders other than the interested shareholder. This provision may discourage attempts by other corporations or groups to acquire control of United, without negotiation with management, through the acquisition of a substantial number of shares of our stock followed by a forced merger. This provision may also enable a minority of our shareholders to prevent a transaction favored by a majority of the shareholders, and may discourage tender offers or other non-open market acquisitions of our common stock because of the potentially higher vote requirements for shareholder approval of any subsequent business combination. Additionally, in some circumstances, our board of directors could, by withholding its consent to such a transaction, cause the 75%/75% shareholder vote to be required to approve a business combination, thereby enabling management to retain control over our affairs and their present positions with United.

  Removal of Directors

     Our articles of incorporation provide that a member of our board of directors may only be removed for cause, and only upon the affirmative vote of two-thirds of the outstanding shares of our capital stock entitled to vote thereon. This provision may prevent a significant shareholder from avoiding board scrutiny of a proposed business combination by merely removing directors with conflicting views, and may encourage individuals or groups who desire to propose takeover bids or similar transactions to negotiate with the board of directors. However, outside of the context of an acquisition attempt, it may serve as an impediment to a more legitimate need to remove a director.

DESCRIPTION OF PREFERRED STOCK

     We are authorized to issue 10,000,000 shares of preferred stock, $1.00 par value per share, issuable in specified series and having specified voting, dividend, conversion, liquidation, and other rights and preferences as our board of directors may determine. The preferred stock may be issued for any lawful corporate purpose without further action by our shareholders. The issuance of any preferred stock having conversion rights might have the effect of diluting the interests of our other shareholders. In addition, shares of preferred stock could be issued with rights, privileges, and preferences which would deter a tender or exchange offer or discourage the acquisition of control of United.

     As of June 15, 2004, 48,300 shares of Series A Non-Cumulative Preferred Stock were issued and outstanding.

DESCRIPTION OF DEBT SECURITIES

     We may offer from time to time debt securities in the form of either senior debt securities or subordinated debt securities. Unless otherwise specified in a supplement to this prospectus, the debt securities will be our direct, unsecured obligations and will rank equally with all of our other unsecured and unsubordinated indebtedness.

     The debt securities will be issued under one or more separate indentures between us and a trustee to be identified in the applicable prospectus supplement. The indentures are substantially identical except for the subordination provisions described below under “Subordinated Debt Securities” in this “Description of the Debt Securities”. This summary refers to both indentures as the “indenture”.

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     We have summarized the general terms and provisions of the indenture below. The summary is not complete. The form of indenture for senior indebtedness and indenture for subordinated indebtedness have been incorporated by reference as exhibits to the registration statement and you should read the indentures for provisions that may be important to you. When we offer to sell a particular series of debt securities, we will describe the specific terms of the series in a supplement to this prospectus. We will also indicate in the supplement whether the general terms and provisions described in this prospectus apply to a particular series of debt securities. Capitalized terms used in the summary have the meanings specified in the indentures.

General

     The terms of each series of debt securities will be established by or pursuant to a resolution of our Board of Directors and set forth or determined in the manner provided in an officers’ certificate or by a supplemental indenture. The particular terms of each series of debt securities will be described in a prospectus supplement relating to such series.

     We can issue an unlimited amount of debt securities under the indenture. The debt securities may be in one or more series with the same or various maturities, at par, at a premium, or at a discount. We will set forth in a prospectus supplement relating to any series of debt securities being offered, the aggregate principal amount and the following terms of the debt securities:

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     In addition, the indenture does not limit our ability to issue convertible debt securities. Any conversion provisions of a particular series of debt securities will be set forth in the officer’s certificate or supplemental indenture related to that series of debt securities and will be described in the relevant prospectus supplement. Such terms may include provisions for conversion, either mandatory, at the option of the holder or at our option, in which case the number of shares of common stock or other securities to be received by the holders of debt securities would be calculated as of a time and in the manner stated in the prospectus supplement.

     We may issue debt securities that provide for an amount less than their stated principal amount to be due and payable upon declaration of acceleration of their maturity pursuant to the terms of the indenture. We will provide you with information on the federal income tax considerations and other special considerations applicable to any of these debt securities in the applicable prospectus supplement.

Transfer and Exchange

     Each debt security will be represented by either one or more global securities registered in the name of The Depository Trust Company, as Depositary, or a nominee (we will refer to any debt security represented by a global debt security as a “book-entry debt security”), or a certificate issued in definitive registered form (we will refer to any debt security represented by a certificated security as a “certificated debt security”) as set forth in the applicable prospectus supplement. Except as set forth under the heading “Global Debt Securities and Book-Entry System” below, book-entry debt securities will not be issuable in certificated form.

  Certificated Debt Securities.

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     You may transfer or exchange certificated debt securities at any office we maintain for this purpose in accordance with the terms of the indenture. No service charge will be made for any transfer or exchange of certificated debt securities, but we may require payment of a sum sufficient to cover any tax or other governmental charge payable in connection with a transfer or exchange.

     You may effect the transfer of certificated debt securities and the right to receive the principal of, premium and interest on certificated debt securities only by surrendering the certificate representing those certificated debt securities and either reissuance by us or the trustee of the certificate to the new holder or the issuance by us or the trustee of a new certificate to the new holder.

  Global Debt Securities and Book-Entry System.

     Each global debt security representing book-entry debt securities will be deposited with, or on behalf of, the depositary, and registered in the name of the depositary or a nominee of the depositary. The depositary has indicated it intends to follow the following procedures with respect to book-entry debt securities.

     Ownership of beneficial interests in book-entry debt securities will be limited to persons that have accounts with the depositary for the related global debt security, which we refer to as participants, or persons that may hold interests through participants. Upon the issuance of a global debt security, the depositary will credit, on its book-entry registration and transfer system, the participants’ accounts with the respective principal amounts of the book-entry debt securities represented by such global debt security beneficially owned by such participants. The accounts to be credited will be designated by any dealers, underwriters or agents participating in the distribution of the book-entry debt securities. Ownership of book-entry debt securities will be shown on, and the transfer of such ownership interests will be effected only through, records maintained by the depositary for the related global debt security (with respect to interests of participants) and on the records of participants (with respect to interests of persons holding through participants). The laws of some states may require that certain purchasers of securities take physical delivery of such securities in definitive form. These laws may impair the ability to own, transfer or pledge beneficial interests in book-entry debt securities.

     So long as the depositary for a global debt security, or its nominee, is the registered owner of that global debt security, the depositary or its nominee, as the case may be, will be considered the sole owner or holder of the book-entry debt securities represented by such global debt security for all purposes under the indenture. Except as described below, beneficial owners of book-entry debt securities will not be entitled to have securities registered in their names, will not receive or be entitled to receive physical delivery of a certificate in definitive form representing securities and will not be considered the owners or holders of those securities under the indenture. Accordingly, each person beneficially owning book-entry debt securities must rely on the procedures of the depositary for the related global debt security and, if such person is not a participant, on the procedures of the participant through which such person owns its interest, to exercise any rights of a holder under the indenture.

     We understand, however, that under existing industry practice, the depositary will authorize the persons on whose behalf it holds a global debt security to exercise certain rights of holders of debt securities, and the indenture provides that we, the trustee and our respective agents will treat as the holder of a debt security the persons specified in a written statement of the depositary with respect to that global debt security for purposes of obtaining any consents or directions required to be given by holders of the debt securities pursuant to the indenture.

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     We will make payments of principal of, and premium and interest on book-entry debt securities to the depositary or its nominee, as the case may be, as the registered holder of the related global debt security. United, the trustee and any other agent of ours or agent of the trustee will not have any responsibility or liability for any aspect of the records relating to or payments made on account of beneficial ownership interests in a global debt security or for maintaining, supervising or reviewing any records relating to beneficial ownership interests.

     We expect that the depositary, upon receipt of any payment of principal of, premium or interest on a global debt security, will immediately credit participants’ accounts with payments in amounts proportionate to the respective amounts of book-entry debt securities held by each participant as shown on the records of such depositary. We also expect that payments by participants to owners of beneficial interests in book-entry debt securities held through those participants will be governed by standing customer instructions and customary practices, as is now the case with the securities held for the accounts of customers in bearer form or registered in “street name”, and will be the responsibility of those participants.

     We will issue certificated debt securities in exchange for each global debt security if the depositary is at any time unwilling or unable to continue as depositary or ceases to be a clearing agency registered under the Exchange Act, and a successor depositary registered as a clearing agency under the Exchange Act is not appointed by us within 90 days. In addition, we may at any time and in our sole discretion determine not to have the book-entry debt securities of any series represented by one or more global debt securities and, in that event, will issue certificated debt securities in exchange for the global debt securities of that series. Global debt securities will also be exchangeable by the holders for certificated debt securities if an event of default with respect to the book-entry debt securities represented by those global debt securities has occurred and is continuing. Any certificated debt securities issued in exchange for a global debt security will be registered in such name or names as the depositary shall instruct the trustee. We expect that such instructions will be based upon directions received by the depositary from participants with respect to ownership of book-entry debt securities relating to such global debt security.

     We have obtained the foregoing information concerning the depositary and the depositary’s book-entry system from sources we believe to be reliable, but we take no responsibility for the accuracy of this information.

No Protection in the Event of a Change of Control

     Unless we state otherwise in the applicable prospectus supplement, the debt securities will not contain any provisions which may afford holders of the debt securities protection, such as acceleration, in the event we have a change in control or in the event of a highly leveraged transaction (whether or not such transaction results in a change in control), which could adversely affect holders of debt securities.

Covenants

     We will set forth in the applicable prospectus supplement any restrictive covenants applicable to any issue of debt securities.

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Consolidation, Merger and Sale of Assets

     We may not consolidate with or merge with or into, or convey, transfer or lease all or substantially all of our properties and assets to, any person, which we refer to as a successor person, unless:

Events of Default

     Event of default means, with respect to any series of debt securities, any of the following:

     No event of default with respect to a particular series of debt securities (except as to certain events of bankruptcy, insolvency or reorganization) necessarily constitutes an event of default with respect to any other series of debt securities. The occurrence of an event of default may constitute an event of default under our bank credit agreements in existence from time to time. In addition, the occurrence of certain events of default or an acceleration under the indenture may constitute an event of default under certain of our other indebtedness outstanding from time to time.

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     If an event of default with respect to debt securities of any series at the time outstanding occurs and is continuing, then the trustee or the holders of not less than a majority in principal amount of the outstanding debt securities of that series may, by a notice in writing to us (and to the trustee if given by the holders), declare to be due and payable immediately the principal (or, if the debt securities of that series are discount securities, that portion of the principal amount as may be specified in the terms of that series) of and accrued and unpaid interest, if any, on all debt securities of that series. In the case of an event of default resulting from certain events of bankruptcy, insolvency or reorganization, the principal (or such specified amount) of and accrued and unpaid interest, if any, on all outstanding debt securities will become and be immediately due and payable without any declaration or other act on the part of the trustee or any holder of outstanding debt securities. Any payment by us on the subordinated debt securities following any such acceleration will be subject to the subordination provisions described below under “Subordinated Debt Securities”. At any time after a declaration of acceleration with respect to debt securities of any series has been made, but before a judgment or decree for payment of the money due has been obtained by the trustee, the holders of a majority in principal amount of the outstanding debt securities of that series may rescind and annul the acceleration if all events of default, other than the non-payment of accelerated principal and interest, if any, with respect to debt securities of that series, have been cured or waived as provided in the indenture. We refer you to the prospectus supplement relating to any series of debt securities that are discount securities for the particular provisions relating to acceleration of a portion of the principal amount of such discount securities upon the occurrence of an event of default.

     The indenture provides that the trustee will be under no obligation to exercise any of its rights or powers under the indenture at the request of any holder of outstanding debt securities, unless the trustee receives indemnity satisfactory to it against any loss, liability or expense. Subject to certain rights of the trustee, the holders of a majority in principal amount of the outstanding debt securities of any series will have the right to direct the time, method and place of conducting any proceeding for any remedy available to the trustee or exercising any trust or power conferred on the trustee with respect to the debt securities of that series.

     No holder of any debt security of any series will have any right to institute any proceeding, judicial or otherwise, with respect to the indenture or for the appointment of a receiver or trustee, or for any remedy under the indenture, unless:

     Notwithstanding the foregoing, the holder of any debt security will have an absolute and unconditional right to receive payment of the principal of, premium and any interest on that debt security on or after the due dates expressed in that debt security and to institute suit for the enforcement of payment.

     The indenture requires us, within 120 days after the end of our fiscal year, to furnish to the trustee a statement as to compliance with the indenture. The indenture provides that the trustee may withhold notice to the holders of debt securities of any series of any default or event of default (except in payment

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on any debt securities of that series) with respect to debt securities of that series if it in good faith determines that withholding notice is in the interest of the holders of those debt securities.

Modification and Waiver

     We may modify and amend the indenture with the consent of the holders of at least a majority in principal amount of the outstanding debt securities of each series affected by the modifications or amendments. We may not make any modification or amendment without the consent of the holders of each affected debt security then outstanding if that amendment will:

     Except for certain specified provisions, the holders of at least a majority in principal amount of the outstanding debt securities of any series may on behalf of the holders of all debt securities of that series waive our compliance with provisions of the indenture. The holders of a majority in principal amount of the outstanding debt securities of any series may on behalf of the holders of all the debt securities of such series waive any past default under the indenture with respect to that series and its consequences, except a default in the payment of the principal of, premium or any interest on any debt security of that series or in respect of a covenant or provision, which cannot be modified or amended without the consent of the holder of each outstanding debt security of the series affected; provided, however, that the holders of a majority in principal amount of the outstanding debt securities of any series may rescind an acceleration and its consequences, including any related payment default that resulted from the acceleration.

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Defeasance of Debt Securities and Certain Covenants in Certain Circumstances

  Legal Defeasance.

     The indenture provides that, unless otherwise provided by the terms of the applicable series of debt securities, we may be discharged from any and all obligations in respect of the debt securities of any series (except for certain obligations to register the transfer or exchange of debt securities of such series, to replace stolen, lost or mutilated debt securities of such series, and to maintain paying agencies and certain provisions relating to the treatment of funds held by paying agents). We will be so discharged upon the deposit with the trustee, in trust, of money or U.S. government obligations or, in the case of debt securities denominated in a single currency other than U.S. dollars, foreign government obligations, that, through the payment of interest and principal in accordance with their terms, will provide money in an amount sufficient in the opinion of our independent public accountants to pay and discharge each installment of principal, premium and interest on and any mandatory sinking fund payments in respect of the debt securities of that series on the stated maturity of those payments in accordance with the terms of the indenture and those debt securities.

     This discharge may occur only if, among other things, we have delivered to the trustee an opinion of counsel stating that we have received from, or there has been published by, the United States Internal Revenue Service a ruling or, since the date of execution of the indenture, there has been a change in the applicable United States federal income tax law, in either case to the effect that, and based thereon such opinion shall confirm that, the holders of the debt securities of that series will not recognize income, gain or loss for United States federal income tax purposes as a result of the deposit, defeasance and discharge and will be subject to United States federal income tax on the same amounts and in the same manner and at the same times as would have been the case if the deposit, defeasance and discharge had not occurred.

  Defeasance of Certain Covenants.

     The indenture provides that, unless otherwise provided by the terms of the applicable series of debt securities, upon compliance with certain conditions:

The conditions include:

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  Covenant Defeasance and Events of Default.

     In the event we exercise our option to effect covenant defeasance with respect to any series of debt securities and the debt securities of that series are declared due and payable because of the occurrence of any event of default, the amount of money or U.S. government obligations or foreign government obligations on deposit with the trustee will be sufficient to pay amounts due on the debt securities of that series at the time of their stated maturity but may not be sufficient to pay amounts due on the debt securities of that series at the time of the acceleration resulting from the event of default. We will remain liable for those payments.

The Trustee

     The indentures limit the right of the trustee, should it become a creditor of us, to obtain payment of claims or secure its claims.

     The trustee is permitted to engage in certain other transactions. However, if the trustee, acquires any conflicting interest, and there is a default under the debt securities of any series for which they are trustee, the trustee must eliminate the conflict or resign.

Subordinated Debt Securities

     Payment on the subordinated debt securities will, to the extent provided in the indenture, be subordinated in right of payment to the prior payment in full of all of our senior indebtedness. The subordinated debt securities also are effectively subordinated to all debt and other liabilities, including trade payables and lease obligations, if any, of our subsidiaries.

     Upon any distribution of our assets upon any dissolution, winding up, liquidation or reorganization, the payment of the principal of and interest on the subordinated debt securities will be subordinated in right of payment to the prior payment in full in cash or other payment satisfactory to the holders of senior indebtedness of all senior indebtedness. In the event of any acceleration of the subordinated debt securities because of an event of default, the holders of any senior indebtedness would be entitled to payment in full in cash or other payment satisfactory to such holders of all senior indebtedness obligations before the holders of the subordinated debt securities are entitled to receive any payment or distribution. The indenture requires us or the trustee to promptly notify holders of designated senior indebtedness if payment of the subordinated debt securities is accelerated because of an event of default.

     We may not make any payment on the subordinated debt securities, including upon redemption at the option of the holder of any subordinated debt securities or at our option, if:

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     We may resume payments and distributions on the subordinated debt securities:

     No new period of payment blockage may be commenced pursuant to a payment blockage notice unless 365 days have elapsed since the initial effectiveness of the immediately prior payment blockage notice and all scheduled payments of principal, premium and interest, including any liquidated damages, on the notes that have come due have been paid in full in cash. No non-payment default that existed or was continuing on the date of delivery of any payment blockage notice shall be the basis for any later payment blockage notice unless the non-payment default is based upon facts or events arising after the date of delivery of such payment blockage notice.

     If the trustee or any holder of the notes receives any payment or distribution of our assets in contravention of the subordination provisions on the subordinated debt securities before all senior indebtedness is paid in full in cash, property or securities, including by way of set-off, or other payment satisfactory to holders of senior indebtedness, then such payment or distribution will be held in trust for the benefit of holders of senior indebtedness or their representatives to the extent necessary to make payment in full in cash or payment satisfactory to the holders of senior indebtedness of all unpaid senior indebtedness.

     In the event of our bankruptcy, dissolution or reorganization, holders of senior indebtedness may receive more, ratably, and holders of the subordinated debt securities may receive less, ratably, than our other creditors (including our trade creditors). This subordination will not prevent the occurrence of any event of default under the indenture.

     We are not prohibited from incurring debt, including senior indebtedness, under the indenture. We may from time to time incur additional debt, including senior indebtedness.

     We are obligated to pay reasonable compensation to the trustee and to indemnify the trustee against certain losses, liabilities or expenses incurred by the trustee in connection with its duties relating to the subordinated debt securities. The trustee’s claims for these payments will generally be senior to those of noteholders in respect of all funds collected or held by the trustee.

Certain Definitions

     “indebtedness” means:

(1) all indebtedness, obligations and other liabilities for borrowed money, including overdrafts, foreign exchange contracts, currency exchange agreements, interest rate protection agreements, and any loans or advances from banks, or evidenced by bonds, debentures, notes or similar instruments, other than any account payable or other accrued current liability or obligation

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incurred in the ordinary course of business in connection with the obtaining of materials or services;

(2) all reimbursement obligations and other liabilities with respect to letters of credit, bank guarantees or bankers’ acceptances;

(3) all obligations and liabilities in respect of leases required in conformity with generally accepted accounting principles to be accounted for as capitalized lease obligations on our balance sheet;

(4) all obligations and other liabilities under any lease or related document in connection with the lease of real property which provides that we are contractually obligated to purchase or cause a third party to purchase the leased property and thereby guarantee a minimum residual value of the leased property to the lessor and our obligations under the lease or related document to purchase or to cause a third party to purchase the leased property;

(5) all obligations with respect to an interest rate or other swap, cap or collar agreement or other similar instrument or agreement or foreign currency hedge, exchange, purchase agreement or other similar instrument or agreement;

(6) all direct or indirect guaranties or similar agreements in respect of, and our obligations or liabilities to purchase, acquire or otherwise assure a creditor against loss in respect of, indebtedness, obligations or liabilities of others of the type described in (1) through (5) above;

(7) any indebtedness or other obligations described in (1) through (6) above secured by any mortgage, pledge, lien or other encumbrance existing on property which is owned or held by us; and

(8) any and all refinancings, replacements, deferrals, renewals, extensions and refundings of, or amendments, modifications or supplements to, any indebtedness, obligation or liability of the kind described in clauses (1) through (7) above.

     “senior indebtedness” means the principal, premium, if any, interest, including any interest accruing after bankruptcy, and rent or termination payment on or other amounts due on our current or future indebtedness, whether created, incurred, assumed, guaranteed or in effect guaranteed by us, including any deferrals, renewals, extensions, refundings, amendments, modifications or supplements to the above. However, senior indebtedness does not include:

Governing Law

               The indenture and the debt securities will be governed by, and construed in accordance with, the laws of the State of New York.

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DESCRIPTION OF WARRANTS

     This section describes the general terms and provisions of the warrants. The applicable prospectus supplement will describe the specific terms of the warrants offered under that applicable prospectus supplement and any contrary general terms outlined in this section that will not apply to those warrants.

     We may issue warrants independently or together with debt securities. The warrants will be issued under warrant agreements between us and a bank or trust company, as warrant agent, all as stated in the applicable prospectus supplement. The warrant agent will act solely as our agent in connection with the warrants and will not assume any obligation or relationship of agency or trust for or with any holders or beneficial owners of warrants.

     The applicable prospectus supplement will describe the terms of the warrants offered in this prospectus, including the following, if applicable:

     A holder can exchange warrant certificates for new warrant certificates of different authorized denominations, and can exercise his or her warrants at the corporate trust office of the warrant agent or any other office indicated in the applicable prospectus supplement.

     Each warrant entitles the holder of that warrant to purchase the principal amount of securities at the price stated, or determinable in the applicable prospectus supplement. A holder can exercise warrants during the period stated in the applicable prospectus supplement. After the close of business on the expiration date, unexercised warrants will become void.

     A holder can exercise warrants as stated in the applicable prospectus supplement relating to the warrants. We will, as soon as practicable, forward to you the securities purchased upon exercise. If less than all of the warrants represented by the warrant certificates are exercised, a new warrant certificate will be issued for the remaining warrants.

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PLAN OF DISTRIBUTION

     We may sell the securities offered pursuant to this prospectus and any prospectus supplement to or through one or more underwriters or dealers or through agents. Each prospectus supplement, to the extent applicable, will describe the number and terms of the securities to which such prospectus supplement relates, the name or names of any underwriters or agents with whom we have entered into arrangements with respect to the sale of such securities, the public offering or purchase price of such securities and the net proceeds we will receive from such sale. Any underwriter or agent involved in the offer and sale of the securities will be named in the applicable prospectus supplement. We may sell securities directly to investors on our own behalf in those jurisdictions where we are authorized to do so.

     Underwriters may offer and sell the securities at a fixed price or prices, which may be changed, at market prices prevailing at the time of sale, at prices related to the prevailing market prices or at negotiated prices. We also may, from time to time, authorize dealers or agents to offer and sell these securities upon such terms and conditions as may be set forth in the applicable prospectus supplement. In connection with the sale of any of these securities, underwriters may receive compensation from us in the form of underwriting discounts or commissions and may also receive commissions from purchasers of the securities for whom they may act as agent. Underwriters may sell the securities to or through dealers, and such dealers may receive compensation in the form of discounts, concessions or commissions from the underwriters or commissions from the purchasers for which they may act as agents.

     Shares may also be sold in one or more of the following transactions: (1) block transactions (which may involve crosses) in which a broker-dealer may sell all or a portion of the shares as agent but may position and resell all or a portion of the block as principal to facilitate the transaction; (2) purchases by a broker-dealer as principal and resale by the broker-dealer for its own account pursuant to a prospectus supplement; (3) a special offering, an exchange distribution or a secondary distribution in accordance with applicable stock exchange or NASD rules; (4) ordinary brokerage transactions and transactions in which a broker-dealer solicits purchasers; (5) sales “at the market” to or through a market maker or into an existing trading market, on an exchange or otherwise, for shares; and (6) sales in other ways not involving market makers or established trading markets, including direct sales to purchasers. Broker-dealers may also receive compensation from purchasers of the shares which is not expected to exceed that customary in the types of transactions involved.

     Any underwriting compensation paid by us to underwriters or agents in connection with the offering of these securities, and any discounts or concessions or commissions allowed by underwriters to participating dealers, will be set forth in the applicable prospectus supplement. Dealers and agents participating in the distribution of the securities may be deemed to be underwriters, and any discounts and commissions received by them and any profit realized by them on resale of the securities may be deemed to be underwriting discounts and commissions.

     Underwriters, dealers and agents may be entitled, under agreements entered into with us, to indemnification against and contribution toward certain civil liabilities, including liabilities under the Securities Act of 1933. Unless otherwise set forth in the accompanying prospectus supplement, the obligations of any underwriters to purchase any of these securities will be subject to certain conditions precedent.

     In connection with the offering of the securities hereby, certain underwriters, and selling group members and their respective affiliates, may engage in transactions that stabilize, maintain or otherwise affect the market price of the applicable securities. These transactions may include stabilization transactions effected in accordance with Rule 104 of Regulation M promulgated by the SEC pursuant to which these persons may bid for or purchase securities for the purpose of stabilizing their market price.

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     The underwriters in an offering of securities may also create a “short position” for their account by selling more securities in connection with the offering than they are committed to purchase from us. In that case, the underwriters could cover all or a portion of the short position by either purchasing securities in the open market following completion of the offering of these securities or by exercising any over-allotment option granted to them by us. In addition, the managing underwriter may impose “penalty bids” under contractual arrangements with other underwriters, which means that they can reclaim from an underwriter (or any selling group member participating in the offering) for the account of the other underwriters, the selling concession for the securities that are distributed in the offering but subsequently purchased for the account of the underwriters in the open market. Any of the transactions described in this paragraph or comparable transactions that are described in any accompanying prospectus supplement may result in the maintenance of the price of the securities at a level above that which might otherwise prevail in the open market. None of the transactions described in this paragraph or in an accompanying prospectus supplement are required to be taken by any underwriters and, if they are undertaken, may be discontinued at any time.

     Our common stock is listed on the Nasdaq National Market under the symbol “UCBI”. Our preferred stock will be new issues of securities with no established trading market and may or may not be listed on a national securities exchange. Any underwriters or agents to or through which securities are sold by us may make a market in the securities, but these underwriters or agents will not be obligated to do so and any of them may discontinue any market making at any time without notice. No assurance can be given as to the liquidity of or trading market for any securities sold by us.

     Underwriters, dealers and agents may engage in transactions with, or perform services for, us and our affiliates in the ordinary course of business. Underwriters have from time to time in the past provided, and may from time to time in the future provide, investment banking services to us for which they have in the past received, and may in the future receive, customary fees.

LEGAL MATTERS

     Kilpatrick Stockton LLP will provide an opinion as to the legality of the securities. As of the date of this prospectus, members of Kilpatrick Stockton LLP participating in this matter own an aggregate of 21,336 shares of our common stock.

EXPERTS

     Our audited consolidated financial statements incorporated by reference in this prospectus have been audited by Porter Keadle Moore LLP, independent public accountants, as indicated in its related audit reports, and are included on the authority of that firm as experts in giving those reports.

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A WARNING ABOUT FORWARD-LOOKING STATEMENTS

     This prospectus (and other documents to which it refers) contains forward-looking statements regarding us, including, without limitation, statements relating to our expectations with respect to revenue, credit losses, levels of nonperforming assets, expenses, earnings and other measures of financial performance. Words such as “may”, “could”, “would”, “should”, “believes”, “expects”, “anticipates”, “estimates”, “intends”, “plans”, “targets” or similar expressions are intended to identify forward-looking statements. These statements are based on the beliefs, assumptions, and expectations of our management, and on information currently available to those members of management. They are expressions based on historical fact, but do not guarantee future performance. Forward-looking statements involve risks, uncertainties, and assumptions, and certain factors could cause actual results to differ from results expressed or implied by the forward-looking statements, including:

     We believe these forward-looking statements are reasonable, but we caution that the foregoing list of factors is not exclusive and that you should not place undue reliance on these forward-looking statements, because our future results and shareholder values may differ materially from those expressed or implied by these forward-looking statements. We do not intend to update any forward-looking statement, whether written or oral, relating to the matters discussed in this prospectus.

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PART II.

INFORMATION NOT REQUIRED IN PROSPECTUS

Item 14. Other Expenses of Issuance and Distribution.

     The following table sets forth the expenses in connection with the issuance and distribution of the securities being registered, other than underwriting discounts and commissions. All of the amounts shown are estimated, except the SEC registration fee.

Item 15. Indemnification of Directors and Officers.

     Our Articles of Incorporation provide that no director shall be personally liable to United or our shareholders for breach of his or her duty of care or other duty as a director, but only to the extent permitted from time to time by the Georgia Business Corporation Code.

     Our Bylaws require us to indemnify our directors, officers, employees, and agents against judgments, fines, penalties, amounts paid in settlement, and expenses, including attorney’s fees, resulting from various types of legal actions or proceedings instituted by third parties if the actions of the director, officer, employee, or agent being indemnified meet the standards of conduct specified therein.

     In addition, our Bylaws require us to indemnify our directors, officers, employees, and agents for expenses actually and reasonably incurred in connection with legal actions or proceedings instituted by or in the right of United to procure a judgment in our favor, if the actions of the director, officer, employee, or agent being indemnified meet the standards of conduct set forth therein. However, we will not indemnify a director, officer, employee, or agent for such expenses if such person is adjudged liable to us, unless so ordered by the court in which the legal action or proceeding is brought.

     A determination concerning whether or not the applicable standard of conduct has been met by a director, officer, employee, or agent seeking indemnification must be made by (1) a disinterested majority of the board of directors, (2) our legal counsel, if a quorum of disinterested directors is not obtainable or if the disinterested directors so order, or (3) an affirmative vote of a majority of shares held by the shareholders. No indemnification may be made to or on behalf of a director, officer, employee or agent in connection with any other proceeding in which such person was adjudged liable on the basis that personal benefit was improperly received by him or her.

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     As provided under Georgia law, the liability of a director may not be eliminated or limited (1) for any appropriation, in violation of his duties, of any business opportunity of United, (2) for acts or omissions which involve intentional misconduct or a knowing violation of law, (3) for unlawful corporate distributions or (4) for any transaction from which the director received an improper benefit.

     Insofar as indemnification for liabilities arising under the Securities Act of 1933 may be permitted to our directors, officers and controlling persons pursuant to the foregoing provisions, or otherwise, we have been advised that in the opinion of the Securities and Exchange Commission, such indemnification is against public policy as expressed in the Securities Act and is, therefore, unenforceable.

     Our directors and officers are insured against losses arising from any claim against them as such for wrongful acts or omissions, subject to limitations.

Item 16. Exhibits.

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Item 17. Undertakings

(a) The undersigned registrant hereby undertakes:

     (1) To file, during any period in which offers or sales are being made, a post-effective amendment to this registration statement:

     (i) To include any prospectus required by Section 10(a)(3) of the Securities Act of 1933.

     (ii) To reflect in the prospectus any facts or events arising after the effective date of the registration statement (or the most recent post-effective amendment thereof) which, individually or in the aggregate, represent a fundamental change in the information set forth in the registration statement. Notwithstanding the foregoing, any increase or decrease in volume of securities offered (if the total dollar value of securities offered would not exceed that which was registered) and any deviation from the low or high end of the estimated maximum offering range may be reflected in the form of prospectus filed with the Commission pursuant to Rule 424(b) if, in the aggregate, the changes in volume and price represent no more than a 20 percent change in the maximum aggregate offering price set forth in the “Calculation of Registration Fee” table in the effective registration statement; and

     (iii) To include any material information with respect to the plan of distribution not

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previously disclosed in the registration statement or any material change to such information in the registration statement;

provided, however, that paragraphs (a)(1)(i) and (a)(1)(ii) do not apply if the information required to be included in a post-effective amendment by those paragraphs is contained in periodic reports filed with or furnished to the Commission by the registrant pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 that are incorporated by reference in the registration statement.

     (2) That, for the purpose of determining any liability under the Securities Act of 1933, each such post-effective amendment shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.

     (3) To remove from registration by means of a post-effective amendment any of the securities being registered which remain unsold at the termination of the offering.

(b) The undersigned registrant hereby undertakes that, for purposes of determining any liability under the Securities Act of 1933, each filing of the registrant’s annual report pursuant to section 13(a) or section 15(d) of the Securities Exchange Act of 1934 (and, where applicable, each filing of an employee benefit plan’s annual report pursuant to section 15(d) of the Securities Exchange Act of 1934) that is incorporated by reference in the registration statement shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at the time shall be deemed to be the initial bona fide offering thereof.

(c) The undersigned registrant hereby undertakes to deliver or cause to be delivered with the prospectus, to each person to whom the prospectus is sent or given, the latest annual report to security holders that is incorporated by reference in the prospectus and furnished pursuant to and meeting the requirements of Rule 14a-3 or Rule 14c-3 under the Securities Exchange Act of 1934; and, where interim financial information required to be presented by Article 3 of Regulation S-X is not set forth in the prospectus, to deliver, or cause to be delivered to each person to whom the prospectus is sent or given, the latest quarterly report that is specifically incorporated by reference in the prospectus to provide such interim financial information.

(d) Insofar as indemnification for liabilities arising under the Securities Act of 1933 may be permitted to directors, officers and controlling persons of the registrant pursuant to the foregoing provisions, or otherwise, the registrant has been advised that in the opinion of the Securities and Exchange Commission such indemnification is against public policy as expressed in the Act and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the registrant of expenses incurred or incurred or paid by a director, officer or controlling person of the registrant in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered, the registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in the Act and will be governed by the final adjudication of such issue.

(e) The undersigned registrant hereby undertakes that:

     (1) For purposes of determining any liability under the Securities Act of 1933, the information omitted from the form of prospectus filed as part of this registration statement in reliance upon Rule 430A and contained in a form of prospectus filed by the registrant pursuant to Rule 424(b)(1) or (4) or 497(h) under the Securities Act shall be deemed to be part of this registration statement as of the time it was declared effective.

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     (2) For the purpose of determining any liability under the Securities Act of 1933, each post-effective amendment that contains a form of prospectus shall be deemed to be a new registration statement relating to the Securities offered therein, and the offering of such Securities at that time shall be deemed to be the initial bona fide offering thereof.

(f) The undersigned registrant hereby undertakes to file an application for the purpose of determining the eligibility of the trustee to act under subsection (a) of Section 310 of the Trust Indenture Act in accordance with the rules and regulations prescribed by the Commission under Section 305(b)(2) of the Act.

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SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, United Community Banks, Inc. has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Blairsville, State of Georgia, on June 18, 2004.

     Know all men by these presents, that each person whose signature appears below constitutes and appoints Jimmy C. Tallent and Robert L. Head, Jr., or either of them, as attorney-in-fact, with each having the power of substitution, for him in any and all capacities, to sign any amendments to this Registration Statement on Form S-3 and to file the same, with exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, hereby ratifying and confirming all that each of said attorneys-in-fact, or his substitute or substitutes, may do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended, this Registration Statement has been signed by the following persons in the capacities indicated on June 18, 2004.

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EXHIBIT INDEX