<TABLE> <S> <C>

<PAGE>
<ARTICLE> 9
<LEGEND>
This schedule contains summary financial information extracted from FORM 10-Q
and is qualified in its entirety by reference to such FORM 10-Q filing.
</LEGEND>
<MULTIPLIER> 1000
       
<S>                                     <C>                     <C>
<PERIOD-TYPE>                                  9-MOS                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997             DEC-31-1997
<PERIOD-START>                             JAN-01-1997             JAN-01-1997
<PERIOD-END>                               SEP-30-1997             JUN-30-1997
<CASH>                                          27,586                  23,744
<INT-BEARING-DEPOSITS>                          11,663                   1,355
<FED-FUNDS-SOLD>                                63,315                  23,204
<TRADING-ASSETS>                                     0                       0
<INVESTMENTS-HELD-FOR-SALE>                     41,285                  42,001
<INVESTMENTS-CARRYING>                         506,779                 549,490
<INVESTMENTS-MARKET>                           506,313                 549,578
<LOANS>                                      1,533,279               1,485,623
<ALLOWANCE>                                      7,393                   7,225
<TOTAL-ASSETS>                               2,250,517               2,190,646
<DEPOSITS>                                   1,965,961               1,888,965
<SHORT-TERM>                                    27,681                  41,203
<LIABILITIES-OTHER>                             18,654                  17,214
<LONG-TERM>                                     40,800                  49,500
<PREFERRED-MANDATORY>                            9,153                   8,854
<PREFERRED>                                          0                       0
<COMMON>                                             0                       0
<OTHER-SE>                                     188,268                 184,910
<TOTAL-LIABILITIES-AND-EQUITY>               2,250,517               2,190,646
<INTEREST-LOAN>                                 83,408                  54,594
<INTEREST-INVEST>                               34,415                  23,428
<INTEREST-OTHER>                                     0                       0
<INTEREST-TOTAL>                               117,823                  78,022
<INTEREST-DEPOSIT>                              66,375                  43,453
<INTEREST-EXPENSE>                              71,708                  47,420
<INTEREST-INCOME-NET>                           46,115                  30,602
<LOAN-LOSSES>                                      752                     502
<SECURITIES-GAINS>                                   0                       0
<EXPENSE-OTHER>                                 34,238                  22,128
<INCOME-PRETAX>                                 18,754                  13,190
<INCOME-PRE-EXTRAORDINARY>                      18,754                  13,190
<EXTRAORDINARY>                                    960                     640
<CHANGES>                                            0                       0
<NET-INCOME>                                    17,794                  12,550
<EPS-PRIMARY>                                     2.56                    1.80
<EPS-DILUTED>                                     2.56                    1.80
<YIELD-ACTUAL>                                       0                       0
<LOANS-NON>                                      2,913                   3,790
<LOANS-PAST>                                         0                       0
<LOANS-TROUBLED>                                   841                   1,740
<LOANS-PROBLEM>                                      0                       0
<ALLOWANCE-OPEN>                                 7,051                   7,051
<CHARGE-OFFS>                                      271                     224
<RECOVERIES>                                        20                      15
<ALLOWANCE-CLOSE>                                7,393                   7,225
<ALLOWANCE-DOMESTIC>                             7,393                   7,225
<ALLOWANCE-FOREIGN>                                  0                       0
<ALLOWANCE-UNALLOCATED>                              0                       0
        

</TABLE>