United States

                       Securities and Exchange Commission

                             Washington, D.C. 20549


                                    Form 11-K



     [X]   ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES 
           EXCHANGE ACT OF 1934


                   For the fiscal year ended December 31, 2004


                                       OR


     [ ]   TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES
           EXCHANGE ACT OF 1934


                          Commission file number 1-7784


     A.    Full title of the plan and the address of the plan, if different
           from that of the issuer named below:


                        CENTURYTEL SECURITY SYSTEMS, INC.
                             401 (k) PLAN AND TRUST


     B.    Name of issuer of the securities held pursuant to the plan and 
           the address of its principal executive office:


                                CENTURYTEL, INC.
                              100 CENTURYTEL DRIVE
                                MONROE, LA 71203




             Report of Independent Registered Public Accounting Firm
             -------------------------------------------------------


The Board of Directors
CenturyTel, Inc.:

We have audited the accompanying statements of net assets available for benefits
of CenturyTel Security Systems, Inc. 401 (k) Plan and Trust as of December 31,
2004 and 2003, and the related statement of changes in net assets available for
benefits for the year ended December 31, 2004. These financial statements are
the responsibility of the Plan's management. Our responsibility is to express an
opinion on these financial statements based on our audits.

We conducted our audits in accordance with the standards of the Public Company
Accounting Oversight Board (United States). Those standards require that we plan
and perform the audit to obtain reasonable assurance about whether the financial
statements are free of material misstatement. An audit includes examining, on a
test basis, evidence supporting the amounts and disclosures in the financial
statements. An audit also includes assessing the accounting principles used and
significant estimates made by management, as well as evaluating the overall
financial statement presentation. We believe that our audits provide a
reasonable basis for our opinion.

In our opinion, the financial statements referred to above present fairly, in
all material respects, the net assets available for benefits of CenturyTel
Security Systems, Inc. 401(k) Plan and Trust as of December 31, 2004 and 2003,
and the changes in net assets available for benefits for the year ended December
31, 2004, in conformity with U.S. generally accepted accounting principles.

Our audits were performed for the purpose of forming an opinion on the basic
financial statements taken as a whole. The supplemental schedule of assets (held
at end of year) is presented for the purpose of additional analysis and is not a
required part of the basic financial statements but is supplementary information
required by the Department of Labor's Rules and Regulations for Reporting and
Disclosure under the Employee Retirement Income Security Act of 1974. This
supplemental schedule is the responsibility of the Plan's management. The
supplemental schedule has been subjected to the auditing procedures applied in
the audit of the basic financial statements and, in our opinion, is fairly
stated in all material respects in relation to the basic financial statements
taken as a whole.


KPMG LLP


/s/ KPMG LLP


Shreveport, Louisiana
June 15, 2005



                        CENTURYTEL SECURITY SYSTEMS, INC.
                             401 (k) PLAN AND TRUST
                 Statements of Net Assets Available for Benefits
                           December 31, 2004 and 2003




                                                         2004              2003
-------------------------------------------------------------------------------
                                                                      
PLAN ASSETS
   Investments, at fair value                     $    164,389          141,825
   Cash                                                      9                -
   Contribution receivable - participants                    -               66
   Contribution receivable - employer                        -              432
-------------------------------------------------------------------------------
NET ASSETS AVAILABLE FOR BENEFITS                 $    164,398          142,323
===============================================================================


See accompanying notes to financial statements.




                        CENTURYTEL SECURITY SYSTEMS, INC.
                             401 (k) PLAN AND TRUST
            Statement of Changes in Net Assets Available for Benefits
                      For the year ended December 31, 2004



-------------------------------------------------------------------------------
                                                                         
Additions to net assets:
Investment income:
   Net appreciation in fair value of investments                  $      11,404
   Dividends and interest                                                 3,011
-------------------------------------------------------------------------------
       Net investment income                                             14,415
-------------------------------------------------------------------------------

Contributions:
   Participants                                                          16,176
   Employer                                                               1,333
-------------------------------------------------------------------------------
       Total contributions                                               17,509
-------------------------------------------------------------------------------
       
       Total investment income and contributions                         31,924
-------------------------------------------------------------------------------

Deductions from net assets:
   Participant withdrawals                                                9,849
-------------------------------------------------------------------------------

Net increase                                                             22,075

Net assets available for benefits:
   Beginning of period                                                  142,323
-------------------------------------------------------------------------------

   End of period                                                  $     164,398
===============================================================================


See accompanying notes to financial statements.




                        CENTURYTEL SECURITY SYSTEMS, INC.
                             401 (k) PLAN AND TRUST
                          Notes to Financial Statements
                           December 31, 2004 and 2003


(1)  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES AND PROVISIONS OF THE PLAN

     Basis of Presentation

     The CenturyTel Security Systems Inc., 401(k) Plan and Trust (the Plan) was
     established on June 1, 1997. The accompanying financial statements of the
     Plan have been prepared on the accrual basis of accounting and present the
     net assets available for benefits and changes in net assets available for
     benefits. The Plan has made estimates in preparing the accompanying
     financial statements in accordance with U.S. generally accepted accounting
     principles. Actual results could differ from those estimates.

     The assets of the Plan are invested by the Trustee in various investment
     programs (funds) which are described in Note 2.

     The following description of the Plan provides only general information.
     Participants should refer to the Plan Document for a more complete
     description of the Plan's provisions.

     Participation

     Participation in the Plan is available to each employee of CenturyTel
     Security Systems, Inc. (the Company), other than those who are classified
     as temporary employees or employees covered under a collective bargaining
     agreement.

     In order to participate in the Plan, an employee must execute a Salary
     Deferral Agreement with the Company. In the Salary Deferral Agreement,
     which is executed on-line or by telephone, an employee agrees to a deferral
     of between one percent and twenty-five percent of compensation; however,
     the total amount contributed to the Plan cannot exceed $13,000 for 2004 (as
     adjusted from year to year in accordance with Federal Law). The percentage
     of compensation a participant elects to defer applies to the participant's
     W-2 earnings not in excess of $205,000 for 2004 (as adjusted in accordance
     with Federal Law) excluding severance pay, disability pay, reimbursements
     or other expense allowances, fringe benefits, moving expenses, deferred
     compensation, and welfare benefits. The amount of compensation deferred by
     each participant is credited to an account (Elective Deferral Account)
     maintained for each participant by the Trustee. The Elective Deferral
     Account is self-directed.

     As of the end of each payroll period, the Company contributes to an account
     (Employer Match Account) for each participant a contribution equal to 10%
     of each such participant's contribution during such payroll period;
     however, this matching contribution applies only to the first 6% of such
     participant's compensation contributed to the Plan. The Board of Directors
     of the Company may, at its discretion, elect to contribute an additional
     amount to participants' accounts (Additional Match Account). During 2004, 
     the Company contributed $1,333 to the Plan, all of which related to 
     contributions made to the Employer Match Account.

     Participants age 50 years or older are allowed to make an additional
     contribution to the Plan each year in excess of the otherwise prescribed
     limits. The amount of the allowable additional contribution for a
     participant in 2004 was $3,000; this amount will increase by $1,000 each
     year to a maximum of $5,000 in 2006 (which will thereafter be adjusted
     annually).

     An employee is permitted to transfer to the Plan as a contribution his
     interest in another plan qualified under Section 401(k) of the Internal
     Revenue Code, as amended (the Code). Such contribution must qualify as a
     "rollover" contribution described in Section 402(c) or 408 (d)(3) of the
     Code. Such a rollover will be credited to a rollover account on behalf of
     the participant (the Rollover/Transfer Account).

     The interest of a participant in his Elective Deferral Account, his
     Rollover/Transfer Account, his Employer Match Account and his Additional 
     Match Account is fully vested and non-forfeitable at all times.

     Reports to Participants

     All participants are furnished with quarterly statements which set forth
     the status of their accounts in the Plan.

     Distributions

     If the employment of a participant with the employer ceases because of
     death, retirement, disability, termination of employment or for any other
     reason, the participant's entire interest in the Plan may be distributed to
     him or to his beneficiary in a lump sum or in periodic installments. If the
     participant dies without designating a beneficiary, his beneficiary shall
     be, in the order listed, (i) his spouse, (ii) his children, or (iii) his
     estate.

     Withdrawals

     A participant who is an employee and over age 59 1/2 may make withdrawals
     from his vested accounts prior to meeting normal distribution requirements.
     A participant may make withdrawals from his Rollover/Transfer Account at
     any time. In addition, a hardship withdrawal may be made from an Elective
     Deferral Account only as a result of financial hardship related to 
     unreimbursable educational expenses, medical expenses which are not
     reimbursable by insurance, the need to pay for the funeral expenses of a 
     family member, the purchase of a principal residence of the Participant, 
     or the prevention of eviction or foreclosure from the Participant's 
     principal residence. The determination of the existence of a financial 
     hardship and the amount required to be distributed to meet the need 
     created by the hardship shall be made uniformly and without discrimination
     at the sole discretion of the Plan Administrator.

     Plan Termination

     Although it has not expressed any intent to do so, the Company has the
     right under the Plan to discontinue its contributions at any time and to
     change, suspend or terminate the Plan subject to the provisions of the
     Employee Retirement Income Security Act of 1974.

     Loans to Participants

     The Plan has a provision whereby a participant can borrow from his Elective
     Deferral Account or Rollover/Transfer Account. The maximum loan is $50,000
     reduced by the excess, if any, of the highest outstanding loan balance
     during the previous year over the outstanding loan balance on the date of
     the new loan or 50% of the account balance. The loans are repaid through
     payroll deductions and the interest rate is the prime rate published in the
     Wall Street Journal for the last business day of the previous quarter plus
     1%. The loan repayment period may not exceed five years except for loans
     for the purchase of the participant's principal residence which may be for
     any period not to exceed fifteen years.

     Trustee

     The Trustee of the Plan, as of December 31, 2004, was T. Rowe Price Trust
     Company (T. Rowe Price). The Board of Directors of the Company may remove
     the Trustee and appoint a successor trustee. The Company and the Trustee
     have entered into a Trust Agreement which provides for the establishment of
     a Trust for the purpose of holding and investing the contributions to the
     Trust pursuant to the provisions of the Plan.

     Administration

     The Company has appointed a committee to administer the Plan. The
     individuals who administer the Plan serve at the discretion of the Board of
     Directors of the Company and may be removed by the Board of Directors at
     any time. The administrative costs of the Plan are paid by the Company.

     Investment Valuation and Income Recognition

     Investments in CenturyTel Common Stock are valued at the closing market
     price on December 31, 2004 and 2003, respectively. Other investments in the
     funds, which consist primarily of shares of mutual funds, are valued by the
     Trustee based on the market value at year-end of the underlying assets of
     each fund. Purchases and sales of securities are recorded on a trade date
     basis. Loans to participants are valued at principal amount outstanding
     which approximates market value. Interest income is recorded on the accrual
     basis.

(2)  DESCRIPTION OF THE FUNDS

     The following is a description of each of the funds which had outstanding
     balances and were available to Plan participants as of December 31, 2004:

     (a)   CenturyTel Common Stock Fund - consists of shares of CenturyTel 
           Common Stock ($17,078 and $14,760 at December 31, 2004 and
           2003, respectively).

     (b)   Loan Fund - represents loans to participants from the participants'
           investment accounts ($22,651 and $11,659 at December 31, 2004 and 
           2003, respectively).

     (c)   American Funds Amcap, R4 - consists primarily of investments in 
           U.S. common stocks ($21,705 at December 31, 2004).

     (d)   Fidelity Diversified International Fund - consists primarily of 
           investments in foreign common stocks ($19,994 at December 31, 2004).

     (e)   Oakmark Equity and Income Fund, Class I  - consists primarily of 
           investments in U.S. equity and debt securities ($5 at December 31,
           2004).

     (f)   Morgan Stanley Institutional Fund Small Company Growth Portfolio B -
           consists primarily of investments in equity securities of small
           companies ($2,807 and $2,363 at December 31, 2004 and 2003,
           respectively).

     (g)   PIMCO Total Return Fund - consists primarily of investments in 
           debt securities ($1,624 and $798 at December 31, 2004 and 
           2003, respectively).

     (h)   T. Rowe Price Retirement 2010 Fund - consists primarily of
           investments in U.S. and foreign equity and debt securities and money
           market instruments and is managed for investors planning to retire
           (or begin to withdraw substantial portions of their investment)
           around the year 2010 ($457 at December 31, 2004).

     (i)   T. Rowe Price Retirement 2020 Fund - consists primarily of
           investments in U. S. and foreign equity and debt securities and money
           market instruments and is managed for investors planning to retire
           (or begin to withdraw substantial portions of their investment)
           around the year 2020 ($60 at December 31, 2004).

     (j)   T. Rowe Price Retirement 2030 Fund - consists primarily of
           investments in U.S. and foreign equity and debt securities and money
           market instruments and is managed for investors planning to retire
           (or begin to withdraw substantial portions of their investment)
           around the year 2030 ($1,434 at December 31, 2004).

     (k)   T. Rowe Price Equity Income Fund - consists primarily of investments
           in U. S. and foreign common stocks ($11,301 and $12,373 at December
           31, 2004 and 2003, respectively).

     (l)   T. Rowe Price Equity Index 500 Fund - consists primarily of
           investments in the same stocks and in substantially the same
           percentages as the S&P 500 Index ($56,690 and $48,746 at December
           31, 2004 and 2003, respectively).

     (m)   T. Rowe Price Mid-Cap Growth Fund - consists primarily of investments
           in common stocks of companies whose market capitalization falls
           within the range of companies in the S&P MidCap 400 Index ($6,950 and
           $6,650 at December 31, 2004 and 2003, respectively).

     (n)   T. Rowe Price Summit Cash Reserves Fund - consists primarily of
           investments in various money market instruments ($1,633 and $1,924 at
           December 31, 2004 and 2003, respectively).

     Investments in American Funds Amcap R4, Fidelity Diversified International
     Fund, T. Rowe Price Equity Index 500 Fund, T. Rowe Price Equity Income
     Fund, CenturyTel Common Stock Fund and Loan Fund were each greater than 5%
     of assets available for benefits at December 31, 2004.

     A participant may instruct that all his contribution be allocated among the
     various funds. A participant may change his investment allocation
     instructions and his contribution percentage at any time.

(3)  INCOME TAXES

     The Plan and related trust were designed to meet the necessary requirements
     of Internal Revenue Code Section 401(a) and, accordingly, the trust
     underlying the Plan is exempt from income taxation pursuant to Internal
     Revenue Code Section 501(a). A favorable determination letter from the
     Internal Revenue Service was received in October 2003 related to the Plan.

(4)  RELATED PARTY TRANSACTIONS

     Certain Plan investments are shares of mutual funds managed by T. Rowe
     Price, Capital Research and Management Company (Capital), Fidelity
     Investments (Fidelity), Harris Associates (Harris), Morgan Stanley
     Investment Management Inc. (Morgan Stanley) or Pacific Investment
     Management Company (PIMCO). T. Rowe Price is the Trustee as defined by the
     Plan. Therefore, T. Rowe Price, Capital, Fidelity, Harris, Morgan Stanley
     and PIMCO qualify as parties-in-interest. Fees paid by the Company to T.
     Rowe Price for trustee, record keeping and other services amounted to
     $6,815 for the year ended December 31, 2004.

(5)  CONCENTRATION OF INVESTMENTS

     Substantially all of the assets available for benefits were invested in
     mutual funds managed by T. Rowe Price, Capital, Fidelity, Harris, Morgan
     Stanley or PIMCO. The remaining assets available for benefits were invested
     in CenturyTel Common Stock and loans to participants.





                        CENTURYTEL SECURITY SYSTEMS, INC.
                             401 (k) PLAN AND TRUST

         Schedule H, Line 4i - Schedule of Assets (Held at End of Year)

                                December 31, 2004



    Identity of issuer, borrower,                                                       Current
       lessor or similar party                       Description of Investment           Value            
-----------------------------------------------------------------------------------------------------------
                                                                                            
Investment in CenturyTel Common Stock               481  shares at $35.47 per share    $   17,078   (Note 1)

Loan Fund (interest rates ranged 
 from 5.0% to 9.0%)                                                                        22,651   (Note 1)

Investment in Mutual Funds for
 Qualified Employee Benefit Plans:
    Managed by Capital Research and
     Management Company:
        American Funds Amcap, R4                  1,186  shares at $18.30 per share        21,705   (Note 1)
    Managed by Fidelity Investments:
        Fidelity Diversified International Fund     698  shares at $28.64 per share        19,994   (Note 1)
    Managed by Harris Associates:
        Oakmark Equity & Income Fund, Class I      0.21  shares at $23.50 per share             5
    Managed by Morgan Stanley:
        Institutional Fund Small Company
         Growth Portfolio B                         234  shares at $12.02 per share         2,807
    Managed by PIMCO:
        PIMCO  Total Return Fund                    152  shares at $10.67 per share         1,624
    Managed by T. Rowe Price:
        Retirement 2010 Fund                         33  shares at $14.04 per share           457
        Retirement 2020 Fund                          4  shares at $14.89 per share            60
        Retirement 2030 Fund                         93  shares at $15.50 per share         1,434
        Equity Income Fund                          425  shares at $26.59 per share        11,301   (Note 1)
        Equity Index 500 Fund                     1,741  shares at $32.56 per share        56,690   (Note 1)
        Mid-Cap Growth Fund                         139  shares at $49.88 per share         6,950
        Summit Cash Reserves  Fund                1,633  shares at $1.00 per share          1,633           
-----------------------------------------------------------------------------------------------------------

                                                                                       $  164,389           
===========================================================================================================


T. Rowe Price, Capital, Fidelity, Harris, PIMCO, and Morgan Stanley are
considered parties-in-interest. Additionally, CenturyTel, Inc., as sponsor of
the Plan, is considered a party-in-interest.

Notes:  (1)  These investments are greater than 5% of assets available
             for benefits.
        (2)  Information on cost of investments is excluded as all 
             investments are participant directed.

See accompanying report of independent registered public accounting firm.




                                    SIGNATURE



Pursuant to the requirements of the Securities Exchange Act of 1934, the
Retirement Committee has duly caused this annual report to be signed on its
behalf by the undersigned thereunto duly authorized.



                                 CenturyTel Security Systems, Inc.
                                 401 (k) Plan and Trust


June 27, 2005                  /s/ R. Stewart Ewing, Jr.
                                 --------------------------
                                 R. Stewart Ewing, Jr.
                                 Retirement Committee Member and
                                 Executive Officer of Issuer of Plan Securities





                        CENTURYTEL SECURITY SYSTEMS, INC.
                             401(K) PLAN AND TRUST

                               Index to Exhibits



   Exhibit
    Number                                                                     
-------------------------------------------------------------------------------
    23.1   Consent of Independent Registered Public Accounting Firm