<ARTICLE>                                            9
<LEGEND>
The schedule  contains summary  financial  information  extracted from Firstbank
Corporation's unaudited financial statements and is qualified in its entirety by
reference  to such  financial  statements  as of  March  31,  2000.  (Dollars in
Thousands)
</LEGEND>
<MULTIPLIER>                                   1,000

                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                              DEC-31-2000
<PERIOD-END>                                   MAR-31-2000
<CASH>                                          19,612
<INT-BEARING-DEPOSITS>                             404
<FED-FUNDS-SOLD>                                    91
<TRADING-ASSETS>                                     0
<INVESTMENTS-HELD-FOR-SALE>                     85,959
<INVESTMENTS-CARRYING>                               0
<INVESTMENTS-MARKET>                                 0
<LOANS>                                        529,561
<ALLOWANCE>                                     (9,560)
<TOTAL-ASSETS>                                 662,339
<DEPOSITS>                                     492,132
<SHORT-TERM>                                    19,050
<LIABILITIES-OTHER>                             33,521
<LONG-TERM>                                     55,870
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        54,915
<OTHER-SE>                                       6,851
<TOTAL-LIABILITIES-AND-EQUITY>                       0
<INTEREST-LOAN>                                 11,196
<INTEREST-INVEST>                                1,357
<INTEREST-OTHER>                                     0
<INTEREST-TOTAL>                                12,554
<INTEREST-DEPOSIT>                               4,325
<INTEREST-EXPENSE>                               5,587
<INTEREST-INCOME-NET>                            6,967
<LOAN-LOSSES>                                      175
<SECURITIES-GAINS>                                  (3)
<EXPENSE-OTHER>                                  5,096
<INCOME-PRETAX>                                  3,022
<INCOME-PRE-EXTRAORDINARY>                       3,022
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     2,110
<EPS-BASIC>                                      .45
<EPS-DILUTED>                                      .44
<YIELD-ACTUAL>                                    8.44
<LOANS-NON>                                      1,867
<LOANS-PAST>                                       519
<LOANS-TROUBLED>                                    53
<LOANS-PROBLEM>                                 18,761
<ALLOWANCE-OPEN>                                 9,317
<CHARGE-OFFS>                                      178
<RECOVERIES>                                       246
<ALLOWANCE-CLOSE>                                9,560
<ALLOWANCE-DOMESTIC>                             7,931
<ALLOWANCE-FOREIGN>                                  0
<ALLOWANCE-UNALLOCATED>                          1,629