<TABLE> <S> <C>
<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 September 30, 2000.
</LEGEND>
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 9-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-END> SEP-30-2000
<CASH> 22,704
<INT-BEARING-DEPOSITS> 306
<FED-FUNDS-SOLD> 4,980
<TRADING-ASSETS> 0
<INVESTMENTS-HELD-FOR-SALE> 77,294
<INVESTMENTS-CARRYING> 0
<INVESTMENTS-MARKET> 0
<LOANS> 578,906
<ALLOWANCE> (9,943)
<TOTAL-ASSETS> 712,102
<DEPOSITS> 529,964
<SHORT-TERM> 36,654
<LIABILITIES-OTHER> 9,588
<LONG-TERM> 72,536
0
0
<COMMON> 53,249
<OTHER-SE> 10,111
<TOTAL-LIABILITIES-AND-EQUITY> 712,102
<INTEREST-LOAN> 35,939
<INTEREST-INVEST> 3,907
<INTEREST-OTHER> 0
<INTEREST-TOTAL> 39,846
<INTEREST-DEPOSIT> 13,851
<INTEREST-EXPENSE> 18,455
<INTEREST-INCOME-NET> 21,391
<LOAN-LOSSES> 562
<SECURITIES-GAINS> 1
<EXPENSE-OTHER> 15,574
<INCOME-PRETAX> 9,301
<INCOME-PRE-EXTRAORDINARY> 9,301
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 6,392
<EPS-BASIC> 1.37
<EPS-DILUTED> 1.35
<YIELD-ACTUAL> 4.66
<LOANS-NON> 1,513
<LOANS-PAST> 723
<LOANS-TROUBLED> 53
<LOANS-PROBLEM> 2,367
<ALLOWANCE-OPEN> 9,317
<CHARGE-OFFS> 462
<RECOVERIES> 526
<ALLOWANCE-CLOSE> 9,943
<ALLOWANCE-DOMESTIC> 8,262
<ALLOWANCE-FOREIGN> 0
<ALLOWANCE-UNALLOCATED> 1,681
</TABLE>