<TABLE> <S> <C>
<ARTICLE> 9
<LEGEND>
FINANCIAL DATA SCHEDULE
Columbia Banking System, Inc. (in thousands except per share)
</LEGEND>
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 9-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-START> JAN-01-2000
<PERIOD-END> SEP-30-2000
<CASH> 73707
<INT-BEARING-DEPOSITS> 33039
<FED-FUNDS-SOLD> 0
<TRADING-ASSETS> 0
<INVESTMENTS-HELD-FOR-SALE> 81433
<INVESTMENTS-CARRYING> 7750
<INVESTMENTS-MARKET> 0
<LOANS> 1181691
<ALLOWANCE> 12569
<TOTAL-ASSETS> 1439498
<DEPOSITS> 1271438
<SHORT-TERM> 40000
<LIABILITIES-OTHER> 10382
<LONG-TERM> 6500
0
0
<COMMON> 91731
<OTHER-SE> 19447
<TOTAL-LIABILITIES-AND-EQUITY> 1439498
<INTEREST-LOAN> 75628
<INTEREST-INVEST> 4369
<INTEREST-OTHER> 174
<INTEREST-TOTAL> 80171
<INTEREST-DEPOSIT> 33759
<INTEREST-EXPENSE> 37015
<INTEREST-INCOME-NET> 43156
<LOAN-LOSSES> 2700
<SECURITIES-GAINS> 0
<EXPENSE-OTHER> 33412
<INCOME-PRETAX> 15562
<INCOME-PRE-EXTRAORDINARY> 15562
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 10206
<EPS-BASIC> .88
<EPS-DILUTED> .85
<YIELD-ACTUAL> 4.69
<LOANS-NON> 4458
<LOANS-PAST> 0
<LOANS-TROUBLED> 1148
<LOANS-PROBLEM> 0
<ALLOWANCE-OPEN> 9967
<CHARGE-OFFS> 839
<RECOVERIES> 741
<ALLOWANCE-CLOSE> 12569
<ALLOWANCE-DOMESTIC> 12569
<ALLOWANCE-FOREIGN> 0
<ALLOWANCE-UNALLOCATED> 0
</TABLE>