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, INC.
                     UNION RETIREMENT SAVINGS 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, Inc. Union Retirement Savings 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, Inc.
Union Retirement Savings 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 audits 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, INC.
                     UNION RETIREMENT SAVINGS PLAN AND TRUST
                 Statements of Net Assets Available for Benefits
                           December 31, 2004 and 2003



                                                         2004              2003
--------------------------------------------------------------------------------
                                                                      
PLAN ASSETS
   Investments, at fair value                    $  10,458,453        9,468,857
   Contributions receivable - employer                  33,027           16,790
--------------------------------------------------------------------------------

NET ASSETS AVAILABLE FOR BENEFITS                $  10,491,480        9,485,647
================================================================================


See accompanying notes to financial statements.




                                CENTURYTEL, INC.
                     UNION RETIREMENT SAVINGS 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:
       Mutual funds                                              $      370,590
       Common stocks                                                    251,368
   Dividend and other income                                            161,118
   Interest income                                                       26,279
-------------------------------------------------------------------------------
           Net investment income                                        809,355
-------------------------------------------------------------------------------

Contributions:
   Participants                                                         431,680
   Employer                                                             218,087
-------------------------------------------------------------------------------
           Total contributions                                          649,767
-------------------------------------------------------------------------------
           Total investment income and contributions                  1,459,122
-------------------------------------------------------------------------------

Deductions from net assets:
   Participant withdrawals                                              453,289
-------------------------------------------------------------------------------

Net increase                                                          1,005,833

Net assets available for benefits:

   Beginning of year                                                  9,485,647
-------------------------------------------------------------------------------
  
   End of year                                                   $   10,491,480
===============================================================================


See accompanying notes to financial statements.



                                CENTURYTEL, INC.
                     UNION RETIREMENT SAVINGS 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, Inc. Union Retirement Savings Plan and Trust (the Plan)
       was established on April 1, 1992. The accompanying financial statements
       of the Plan have been prepared on the accrual basis of accounting and
       present the net assets available for benefits as of December 31, 2004 and
       2003 and changes in net assets available for benefits for the year ended
       December 31, 2004. 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 whose
       compensation and conditions of employment are covered by a collective
       bargaining agreement between the Communications Workers of America, Local
       4370 and CenturyTel of Ohio, Inc. The Plan sponsor is CenturyTel, Inc.
       (the Company), the parent company of CenturyTel of Ohio, Inc.

       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 either on-line or by telephone, an employee agrees to a
       deferral of between one percent and twenty-five percent of his base pay;
       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 base pay 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.

       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).

       As of the end of each payroll period, the Company contributes to an
       account (Employer Match Account) for each participant a contribution
       equal to 55% of each such participant's contribution during such payroll
       period; however, this matching contribution applies only to the first 6%
       of such participant's base compensation contributed to the Plan by the
       employee. The Board of Directors of the Company may, at its discretion,
       elect at the end of each year to contribute an additional amount to
       participants' accounts (Additional Match Account). During 2004, the 
       Company contributed $218,087 to the Plan, of which $185,060 related to 
       contributions made to the Employer Match Account and $33,027 related
       to contributions made to the Additional Match Account.

       The interest of a participant in his Elective Deferral Account and his
       Rollover/Transfer Account is fully vested and non-forfeitable at all
       times. The interest of a participant in his Employer Match Account and 
       the Additional Match Account become fully vested after three years of
       service. A participant with less than three years of service has no
       vested interest in these accounts.

       Reports to Participants

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

       Forfeitures

       A participant's non-vested account balances shall be forfeited as of the
       date upon which the participant's employment has terminated with the
       Company. Forfeiture amounts may be utilized first to satisfy any
       restorations for the year. Then any remaining forfeitures shall be
       utilized to reduce Company contributions.

       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 vested 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

       Prior to September 1, 2000, participants were allowed to make voluntary
       after-tax contributions to the Plan. A participant who is an employee may
       make withdrawals from his after-tax investment account and may withdraw
       the entire balance.

       A participant who is an employee and over age 59 1/2 may make withdrawals
       from his vested investment accounts prior to normal distribution
       requirements being met. 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, the vested interest in 
       an Employer Match Account or the vested interest in an Additional Match
       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 prevention of eviction or foreclosure from the participant's
       principal residence, or for the purchase of 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.

       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 balance on the date
       of the new loan or 50% of the vested account balance. The loans are
       repaid through payroll deductions and the interest rate is the prime rate
       published in the Wall Street Journal on the last 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, Inc. Common Stock (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.

       Plan Termination

       Although it has not expressed any intention to do so, the Company has the
       right under the Plan to change, suspend or terminate the Plan at any
       time, subject to the provisions set forth in the Employee Retirement
       Income Security Act of 1974. However, the Company is required to comply
       with all relevant provisions of the applicable labor agreement.

(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 ($3,151,394 and $2,890,066 at December 31, 2004 and 
            2003, respectively).

       (b)  Loan Fund - represents loans to participants from the participants'
            investment accounts ($474,938 and $401,995 at December 31, 2004 and
            2003, respectively).

       (c)  American Funds Amcap, R4 - consists primarily of investments in 
            U.S. common stocks ($81,912 at December 31, 2004).

       (d)  Fidelity Diversified International Fund - consists primarily of
            investments in foreign common stocks ($106,500 at December 31,
            2004.

       (e)  Oakmark Equity and Income Fund, Class I - consists primarily of
            investments in U.S. equity and debt securities ($52,114 at December
            31, 2004).

       (f)  Morgan Stanley Institutional Fund Small Company Growth Portfolio B
            - consists primarily of investments in common stocks of small
            companies ($115,873 and $83,586 at December 31, 2004 and 2003,
            respectively).

       (g)  PIMCO Total Return Fund - consists primarily of investments in 
            debt securities ($1,005,909 and $702,865 at December 31, 2004 
            and 2003, respectively).

       (h)  PIMCO NFJ Small Cap Value Institutional Fund - consists primarily
            of investments in common stocks of companies with market
            capitalizations between $100 million and $1.8 billion that have
            below average P/E ratios relative to their industries and U.S.
            depositary receipts ($32,327 at December 31, 2004).

       (i)  T. Rowe Price Retirement Income 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) in the near future ($18,515 at December 31, 2004).

       (j)  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 ($205,721 at December 31, 2004).

       (k)  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 ($22,768 at December 31, 2004).

       (l)  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 ($8,386 at December 31, 2004).

       (m)  T. Rowe Price Retirement 2040 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 2040 ($3,279 at December 31, 2004).

       (n)  T. Rowe Price Equity Income Fund - consists primarily of
            investments in U. S. and foreign common stocks ($150,923 and
            $82,723 at December 31, 2004 and 2003, respectively).

       (o)  T. Rowe Price Equity Index 500 Fund - consists of investments in
            the same stocks and in substantially the same percentages as the 
            S&P 500 Index ($3,793,593 and $3,755,919 at December 31, 2004 and
            2003, respectively).

       (p)  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 ($107,370 and $79,062 at December 31, 2004 and
            2003, respectively).

       (q)  T. Rowe Price Summit Cash Reserves Fund - consists primarily of
            investments in various money market instruments ($1,126,931 and
            $1,127,716 at December 31, 2004 and 2003, respectively).

       Investments in CenturyTel Common Stock Fund, PIMCO Total Return Fund, T.
       Rowe Price Equity Index 500 Fund, and T. Rowe Price Summit Cash Reserves
       Fund and were each greater than 5% of assets available for benefits at
       December 31, 2004.

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

(3)    INCOME TAXES

       The Plan and related trust are 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
       was received in October 2003 related to the Plan.

(4)    RELATED PARTY TRANSACTIONS

       Certain Plan investments are shares of mutual funds managed by Capital
       Research and Management Company (Capital), Fidelity Investments
       (Fidelity), Harris Associates (Harris), Morgan Stanley Investment
       Management Inc. (Morgan Stanley), Pacific Investment Management
       Company (PIMCO) or T. Rowe Price. T. Rowe Price is the Trustee as
       defined by the Plan. Therefore, Capital, Fidelity, Harris, Morgan
       Stanley, PIMCO, and T. Rowe Price qualify as parties-in-interest. Fees
       paid by the Company to T. Rowe Price for trustee, record keeping and
       other services amounted to $16,130 for the year ended December 31,
       2004.

(5)    CONCENTRATION OF INVESTMENTS

       As of December 31, 2004 and 2003, 30.0% and 30.5%, respectively, of the
       assets available for benefits were invested in CenturyTel Common Stock.
       Substantially all of the remaining assets available for benefits were
       invested in mutual funds managed by Capital, Fidelity, Harris, Morgan
       Stanley, PIMCO, or T. Rowe Price.




                                CENTURYTEL, INC.
                     UNION RETIREMENT SAVINGS 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            88,847  shares at $35.47 per share    $  3,151,394    (Note 1)

Loan Fund (interest rates ranged
 from 5.0% to 12.50%)                                 -                                     474,938

Investment in Mutual Funds for
 Qualified Employee Benefit Plans:
    Managed by Capital Research and
     Management Company:
        American Funds Amcap, R4                  4,476  shares at $18.30 per share          81,912
    Managed by Fidelity Investments:
        Fidelity Diversified International        3,719  shares at $28.64 per share         106,500
    Managed by Harris Associates:
        Oakmark Equity and Income Fund, Class I   2,218  shares at $23.50 per share          52,114
    Managed by Morgan Stanley:
        Institutional Small Company
         Growth Portfolio B                       9,640  shares at $12.02 per share         115,873
    Managed by PIMCO:
        PIMCO Total Return Fund                  94,275  shares at $10.67 per share       1,005,909    (Note 1)
        PIMCO Small Cap Value                     1,093  shares at $29.57 per share          32,327
    Managed by T. Rowe Price:
        Retirement Income Fund                    1,510  shares at $12.26 per share          18,515
        Retirement 2010 Fund                     14,652  shares at $14.04 per share         205,721
        Retirement 2020 Fund                      1,529  shares at $14.89 per share          22,768
        Retirement 2030 Fund                        541  shares at $15.50 per share           8,386
        Retirement 2040 Fund                        211  shares at $15.57 per share           3,279
        Equity Income Fund                        5,676  shares at $26.59 per share         150,923
        Equity Index 500 Fund                   116,511  shares at $32.56 per share       3,793,593    (Note 1)
        Mid-Cap Growth Fund                       2,153  shares at $49.88 per share         107,370
        Summit Cash Reserves Fund             1,126,931  shares at $1.00 per share        1,126,931    (Note 1)
---------------------------------------------------------------------------------------------------------------
                                                                                       $ 10,458,453           
===============================================================================================================


Capital, Fidelity, Harris, Morgan Stanley, PIMCO and T. Rowe Price 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, Inc.
                                  Union Retirement Savings 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, INC.
                     UNION RETIREMENT SAVINGS PLAN AND TRUST

                                Index to Exhibits



    Exhibit
     Number                                                               
-------------------------------------------------------------------------------

    23.1    Consent of Independent Registered Public Accounting Firm