Exhibit 32 CERTIFICATION OF CHIEF EXECUTIVE OFFICER AND CHIEF FINANCIAL OFFICER OF TIMBERLAND BANCORP, INC. PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 Each of the undersigned hereby certifies in the capacity indicated below, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 and in connection with this Annual Report on Form 10-K, that: 1. the report fully complies with the requirements of Sections 13(a) and 15(d) of the Securities Exchange Act of 1934, as amended, and 2. the information contained in the report fairly presents, in all material respects, the Company's financial condition and results of operations, as of the dates and for the periods presented in the financial statements included in such report. /s/ Michael R. Sand /s/ Dean J. Brydon ------------------------------ ---------------------------- Michael R. Sand Dean J. Brydon Chief Executive Officer Chief Financial Officer Dated: December 12, 2011