FORM 11-K
                   U.S SECURITIES AND EXCHANGE COMMISSION
                           Washington, D.C. 20549

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

     For the fiscal year ended September 30, 2005 OR

[  ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
     EXCHANGE ACT OF 1934

                       Commission file number 0-23333


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

               Timberland Bank 401 (k) Profit Sharing Plan

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

                               Timberland Bank
                             624 Simpson Avenue
                          Hoquiam, Washington 98550





Financial Statements and Exhibits
---------------------------------

(a)  Financial Statements

     The Timberland Bank 401(k) Profit Sharing Plan became effective as of
     December 4, 1970, and was restated effective October 1, 2000.  Filed as a
     part of this report on Form 11-K are the audited financial statements of
     the Plan as of September 30, 2005 and 2004 and for the year ended
     September 30, 2005.

(b)  Exhibit 23 Consent of Independent Auditors




                                   Signatures

           The Plan:  Pursuant to the requirements of the Securities and
     Exchange Act of 1934, the trustees (or other persons who administer
     employees benefit plan) have duly caused this annual report to be signed
     on its behalf by the undersigned hereunto duly authorized.


            ----------------------------------------------------------
            Administrator, Timberland Bank 401 (k) Profit Sharing Plan


               By:  /s/ Dean J. Brydon
                    -------------------------------------
                    Dean J. Brydon                       (name)
                    -------------------------------------
                    Chief Financial Officer              (title)
                    -------------------------------------
                    Timberland Bank                      (bank)
                    -------------------------------------


Date:  February 16, 2006

                                      2





Timberland Bank 401(k) Profit Sharing Plan

Financial Report
September 30, 2005





                                                                    Timberland

                                                                          Bank

                                                                        401(k)

                                                                        Profit

                                                                       Sharing

                                                                          Plan



                                                                     Financial

                                                                        Report



                                                                  September 30

                                                                          2005





Contents
------------------------------------------------------------------------------


Report of Independent Registered Public Accounting Firm.............. 1

Independent Auditors Report.......................................... 2


Financial Statements

Statements of Net Assets Available for Benefits...................... 3

Statement of Changes in Net Assets Available for Benefits............ 4

Notes to Financial Statements....................................... 5-8


Supplemental Schedule

Schedule of Assets (Held at End of Year)............................. 9

Schedule of Delinquent Participant Contributions..................... 10





            Report of Independent Registered Public Accounting Firm



To the Audit Committee of the
Timberland Bank 401(k) Profit Sharing Plan
Hoquiam, Washington


We have audited the accompanying statements of net assets available for
benefits of Timberland Bank 401(k)Profit Sharing Plan (the Plan) as of
September 30, 2005 and 2004, and the related statement of changes in net
assets available for benefits for the year ended September 30, 2005. 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 auditing 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 financial status of the Plan as of September 30,
2005 and 2004, and the changes in its financial status for the year ended
September 30, 2005, 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 schedules as of
September 30, 2005 are 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 United States Department of Labor's Rules and
Regulations for Reporting and Disclosure under the Employee Retirement Income
Security Act of 1974. These supplemental schedules are the responsibility of
the Plan's management.  The supplemental schedules have 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.


/s/ McGladrey & Pullen

Tacoma, Washington
December 9, 2005





                          Independent Auditor's Report




To the Audit Committee of the
Timberland Bank 401(k) Profit Sharing Plan
Hoquiam, Washington


We have audited the accompanying statements of net assets available for
benefits of Timberland Bank 401(k) Profit Sharing Plan (the Plan) as of
September 30, 2005 and 2004, and the related statement of changes in net
assets available for benefits for the year ended September 30, 2005. 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 auditing standards generally
accepted in the United States of America.  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 the Plan as of
September 30, 2005 and 2004, and the changes in net assets available for
benefits for the year ended September 30, 2005, in conformity with accounting
principles generally accepted in the United States of America.

Our audits were performed for the purpose of forming an opinion on the basic
financial statements taken as a whole.  The supplemental schedules as of
September 30, 2005, are 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 United States Department of Labor's Rules and
Regulations for Reporting and Disclosure under the Employee Retirement Income
Security Act of 1974. These supplemental schedules are the responsibility of
the Plan's management.  The supplemental schedules have 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.

/s/ McGladrey & Pullen

Tacoma, Washington
December 9, 2005





                                                                     Financial

                                                                    Statements





Statements of Net Assets Available for Benefits
------------------------------------------------------------------------------


Timberland Bank 401(k) Profit Sharing Plan
September 30, 2005 and 2004


                                                       2005         2004

Assets
  Investments (participant directed)                $6,882,117   $7,251,672
  Employer contributions receivable                    640,660      553,629
  Employee receivable                                      305        6,113
  Cash                                                  10,696        7,704
  Accrued income                                         1,667          472

  Total assets                                       7,535,445    7,819,590

Liabilities                                                - -          - -

  Net assets available for benefits                 $7,535,445   $7,819,590


See notes to financial statements.

                                       3





Statement of Changes in Net Assets Available for Benefit
------------------------------------------------------------------------------


Timberland Bank 401(k) Profit Sharing Plan
Year Ended September 30, 2005


Additions to Net Assets
  Investment income:
    Net appreciation in fair value of investments                 $  349,773
    Dividends                                                        107,690
  Total investment income                                            457,463

  Contributions:
    Employer                                                         640,660
    Participant                                                      348,237
  Total contributions                                                988,897

  Total additions to net assets                                    1,446,360

Deductions from Net Assets
  Benefits paid to participants                                    1,702,092
  Administrative expenses                                             28,413
  Total deductions from net assets                                 1,730,505

  Net decrease                                                       284,145

Net Assets Available for Benefits
  Beginning of year                                                7,819,590

  End of year                                                     $7,535,445

See notes to financial statements.

                                      4





Notes to Financial Statements
------------------------------------------------------------------------------


Timberland Bank 401(k) Profit Sharing Plan
September 30, 2005 and 2004


Note 1 - Description of the Plan

The following description of the Timberland Bank 401(k) Profit Sharing Plan
(the Plan) provides only general information.  Participants should refer to
the Plan agreement for a more complete description of the Plan's provisions.

General

The Plan is a defined contribution plan covering substantially all full-time
employees of Timberland Bank (the Company) who have one year of service and
are age twenty-one or older.  It is subject to the provisions of the Employee
Retirement Income Security Act of 1974 (ERISA).  The Company is the wholly
owned subsidiary of Timberland Bancorp, Inc.

Contributions and Participant Investment Options

The Plan participants may contribute up to the maximum of pretax annual
compensation as set by law.  Participants may also contribute amounts
representing distributions from other qualified defined benefit or defined
contribution plans.  The Company makes an annual safe harbor contribution of
3% of eligible compensation, with additional amounts contributed at the option
of its board of directors.  For the year ended September 30, 2005, the Board
of Directors authorized a 7% profit sharing contribution of total eligible
participant compensation in addition to the safe harbor contribution.

Participants must direct their salary deferral contributions and their
allocated share of the safe harbor contribution and the employer
contributions, if any, into a variety of investment choices, as made available
and determined by the Plan administrator, which are more fully described in
the Plan's literature.

Participant Accounts

Each participant's account is credited with the participant's contribution and
allocations of:  (a) the Company's contributions, (b) Plan earnings, and (c)
forfeitures of terminated participants' nonvested accounts and charged with an
allocation of administrative expenses.  Allocations are based on participant
earnings or account balances, as defined.  The benefit to which a participant
is entitled is the benefit that can be provided from the participant's vested
account.

Vesting

Participants are immediately vested in all deferral, rollover and safe harbor
contributions, plus actual earnings thereon.  Vesting in the Company's
discretionary contribution portion of accounts, plus earnings thereon, is
based on years of credited service.  Participants are fully vested after six
years of credited service.  A participant's accrued benefit derived from
employer contributions is also 100% nonforfeitable upon attaining age 65, or
if the participant's separation from service is a result of death or
disability.


(continued)


                                      5




Notes to Financial Statements
------------------------------------------------------------------------------


Timberland Bank 401(k) Profit Sharing Plan
September 30, 2005 and 2004


Note 1 - Description of the Plan (concluded)

Payment of Benefits

On termination of service, a participant with an accrued benefit of $5,000 or
less will receive a lump-sum amount equal to the value of the vested interest
in their account.  The distribution date will be the earliest administratively
feasible date for participants that attain normal retirement age or age 55
with 10 years of service.  Distributions for participants that do not meet
these requirements will be made as soon as administratively feasible in the
Plan year following separation of service.  Participants with an accrued
benefit in excess of $5,000 may leave the funds in the Plan or elect to
receive a lump-sum distribution.

Forfeited Accounts

Forfeited balances of terminated participant nonvested accounts are treated as
discretionary contributions for the Plan year in which the forfeitures occur.
Forfeitures allocated for the year ended September 30, 2005 totaled $27,096.

Note 2 - Summary of Accounting Policies

Basis of Accounting

The financial statements of the Plan are prepared under the accrual method of
accounting.

Use of Estimates

The preparation of financial statements in conformity with generally accepted
accounting principles requires management to make estimates and assumptions
that affect the reported amounts of assets and liabilities and changes
therein, and the disclosure of contingent assets and liabilities.  Actual
results could differ from these estimates.

Investment Valuation and Income Recognition

The Plan's investments are stated at fair value.  Quoted market prices are
used to value common stock and mutual funds.  Shares of mutual funds are
valued at the net asset value of shares held by the Plan at year-end.
Purchases and sales of securities are recorded on the trade-date basis.
Dividends are recorded on the ex-dividend date.

Payment of Benefits

Benefits are recorded when paid.

                                      6





Notes to Financial Statements
------------------------------------------------------------------------------


Timberland Bank 401(k) Profit Sharing Plan
September 30, 2005 and 2004


Note 3 - Investments

The following presents, separately, identified investments that represent 5%
or more of the Plan's net assets at September 30:

                                                        2005         2004

Timberland Bancorp, Inc. Common Stock                $3,810,338   $4,345,658

Mutual Funds
  First American Small Cap Growth Fund                  669,160      758,499
  First American Strategy Growth Allocation Fund        675,099      732,259
  First American Equity Index Fund                      508,579      564,923
  First American Prime Obligations Fund                 632,186      474,973
  First American Strategy Aggressive Allocation Fund    586,755      375,360

                                                     $6,882,117   $7,251,672


During 2005 the Plan's investments, including gains and losses on investments
bought and sold, as well as held during the year, appreciated in value by
$349,773 as follows:

Mutual funds                                                        $402,770
Common stock                                                         (52,997)

  Net appreciation in fair value of investments                     $349,773


Note 4 - 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 terminate
the Plan, subject to the provisions of ERISA.  In the event of Plan
termination, participants will become 100% vested in their accounts.  Any
unallocated assets of the Plan shall be allocated to participant accounts and
distributed in such a manner as the Company may determine.

                                       7





Notes to Financial Statements
------------------------------------------------------------------------------


Timberland Bank 401(k) Profit Sharing Plan
September 30, 2005 and 2004


Note 5 - Tax Status/Non-Standardized Prototype Plan

Effective October 1, 1997, the Plan adopted a nonstandardized form of a
prototype plan sponsored by Actuarial Planning Group, Inc.  The prototype plan
received an opinion letter, dated August 30, 2001, from the Internal Revenue
Service which stated that the Plan, as then designed, was in compliance with
the applicable requirements of the Internal Revenue Code.  The Plan has been
amended subsequent to receiving the opinion letter.  However, the Plan
administrator believes the Plan is designed and is being operated in
compliance with the applicable provisions of the Internal Revenue Code.


Note 6 - Administration of Plan Assets

Certain Plan investments are shares of mutual funds managed by US Bank.  US
Bank is the trustee, as defined by the Plan; therefore, these transactions
qualify as party-in-interest transactions.  Fees paid by the Plan for
investment management services amounted to $28,413 for the year ended
September 30, 2005.

Certain administrative functions of the Plan are performed by officers or
employees of the Company.  No such officers or employees receive compensation
from the Plan.  Other administrative and management fees of the Plan are paid
directly by the Company.


Note 7 - Risks and Uncertainties

The Plan invests in various investment securities.  Investment securities are
exposed to various risks, such as interest rate, market and credit risks.  Due
to the level of risk associated with certain investment securities, it is at
least reasonably possible that changes in the values of investment securities
will occur in the near term, and that such changes could materially affect
participant account balances and the amounts reported on the statements of net
assets available for benefits.


Note 8 - Recent Regulatory Guidance

Effective March 28, 2005 the Department of Labor (DOL) amended the Internal
Revenue Code to comply with new regulations of the Economic Growth and Tax
Relief Reconciliation Act of 2001.  The amendment requires that mandatory
distributions by the plan for vested balances of more then $1,000 and up to
$5,000 be directly transferred to an individual retirement account (IRA) when
a terminated retirement plan participant does not elect to take a distribution
or make a rollover.  The amendment requires all plans with "cash-outs" be
amended by the last day of the plan year that begins on or after March 28,
2005.  The Plan is in the processing of being amended to comply with the new
regulation.

                                      8





                                                                  Supplemental

                                                                      Schedule





Schedule of Assets (Held at End of Year)
------------------------------------------------------------------------------


Timberland Bank 401(k) Profit Sharing Plan
September 30, 2005


EIN:  91-0260220
Plan Number:  001


   (a) and (b)          (c)                                    (d)    (e)
   Identity of Issue,   Description of Investment, Including   Cost   Current
   Borrower, Lessor     Maturity Date, Rate of Interest,              Value
   or Similar Party     Collateral, Par or Maturity Value
                        (pv or mv)

**  US Bank             First American Strategy Aggressive
                         Allocation Fund                        *   $  586,755

**  US Bank             First American Prime Obligations Fund   *      632,186

**  US Bank             First American Equity Index Fund        *      508,579

**  US Bank             First American Strategy Growth
                         Allocation Fund                        *      675,099

**  US Bank             First American Small Cap Growth Fund    *      669,160

**  Timberland
     Bancorp, Inc.      Common Stock, $0.01 par value           *    3,810,338

                                                                    $6,882,117


  *   Historical cost not required for participant-directed accounts.

  **  Represents a party-in-interest.

                                      9





Schedule of Delinquent Participant Contributions
------------------------------------------------------------------------------


Timberland Bank 401(k) Profit Sharing Plan
September 30, 2005


EIN:  91-0260220
Plan Number:  001

                                                             Total that
                                             Participant     Constitutes
                                             Contributions   Non-exempt
                                             Transferred     Prohibited
                                             Late to Plan    Transactions

2004 Form 5500 Schedule H, Line 4A              $33,715        $33,715

                                     10







                    [McGladrey & Pullen, LLP Letterhead]

         CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM



We hereby consent to the incorporation by reference in the Registration
Statement on Form S-8 (No. 333-116163, filed June 4, 2004) of Timberland
Bancorp, Inc. of our report dated December 9, 2005, appearing in this Annual
Report on Form 11-K of Timberland Bank 401(k) Profit Sharing Plan for the year
ended September 30, 2005.


/s/McGladrey & Pullen, LLP

McGladrey & Pullen, LLP
Tacoma, Washington
March 7, 2006