EXHIBIT 32.1

                            CERTIFICATION PURSUANT TO
                             18 U.S.C. SECTION 1350,
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

      In connection with the Quarterly Report on Form 10-QSB for the period
ended September 30, 2005 (the "Report") of Pinnacle Bancshares, Inc. (the
"Company"), as filed with the Securities and Exchange Commission on the date
hereof, the undersigned, Chief Executive Officer and Chief Financial Officer of
the Company, hereby certifies that to the best of my knowledge:

      (1)   the Report fully complies with the requirements of section 13(a) or
            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 financial condition and results of operations
            of the Company as of and for the periods covered in the Report.

/s/ Robert B. Nolen, Jr.
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Robert B. Nolen, Jr., Chief Executive Officer and
Chief Financial Officer

November 14, 2005
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(Date)

      A signed original of the written statement required by Section 906 has
been provided to the Company and will be retained by the Company and furnished
to the Securities and Exchange Commission or its staff upon request. The
information furnished herein shall not be deemed to be filed for purposes of
Section 18 of the Securities Exchange Act of 1934, nor shall it be deemed
incorporated by reference in any filing under the Securities Act of 1933.