UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, DC 20549

FORM 8-K

CURRENT REPORT
Pursuant to Section 13 or 15(d) of the
Securities Exchange Act of 1934

Date of Report: July 20, 2006

FIRSTBANK CORPORATION
(Exact Name of Registrant as Specified in Charter)

Michigan
(State or Other Jurisdiction
of Incorporation) 000-14209
(Commission
File Number) 38-2633910
(IRS Employer
Identification No.)

311 Woodworth Avenue
Alma, Michigan
(Address of principal executive office) 48801
(Zip Code)

Registrant’s telephone number, including area code: (989) 463-3131

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

[_]     Written communications pursuant to Rule 425 under the Section Act (17 CFR 230.425)
[_]     Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12).
[_]     Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240-14d-2(b)).
[_]     Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)).

Section 2.02      Results of Operations and Financial Condition

        On July 20, 2006, Firstbank Corporation issued a press release announcing results for the second quarter and year-to-date for 2006. A copy of the press release is attached as Exhibit 99.1 to this Form 8-K.

        The information in this Form 8-K and the attached Exhibit shall not be deemed 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, except as shall be expressly set forth by specific reference in such filing.

Section 9.01       Financial Statements and Exhibits

(d)          Exhibit

99.1      Press Release Dated July 20, 2006.

SIGNATURE

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

Dated: July 20, 2006 FIRSTBANK CORPORATION
(Registrant)


By: /s/ Samuel G. Stone
      ——————————————
      Samuel G. Stone
      Executive Vice President and CFO