<TABLE> <S> <C>

<PAGE>
<ARTICLE> 9
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM UNAUDITED
FINANCIAL STATEMENTS CONTAINED IN THE COMPANY'S QUARTERLY REPORT IN FORM 10-Q
FOR THE QUARTER ENDED JUNE 30, 1998. AND IS QUALIFIED IN ITS ENTIRETY BY
REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-01-1998
<PERIOD-END>                               JUN-30-1998
<CASH>                                         238,342
<INT-BEARING-DEPOSITS>                          10,394
<FED-FUNDS-SOLD>                                19,935
<TRADING-ASSETS>                                     0
<INVESTMENTS-HELD-FOR-SALE>                  1,956,144
<INVESTMENTS-CARRYING>                          65,649
<INVESTMENTS-MARKET>                            65,649
<LOANS>                                      3,031,477
<ALLOWANCE>                                     37,841
<TOTAL-ASSETS>                               5,636,044
<DEPOSITS>                                   4,592,076
<SHORT-TERM>                                   384,720
<LIABILITIES-OTHER>                             46,493
<LONG-TERM>                                    121,041
<PREFERRED-MANDATORY>                          120,000
<PREFERRED>                                          0
<COMMON>                                           441
<OTHER-SE>                                     371,273
<TOTAL-LIABILITIES-AND-EQUITY>               5,636,044
<INTEREST-LOAN>                                 71,234
<INTEREST-INVEST>                               31,804
<INTEREST-OTHER>                                   347
<INTEREST-TOTAL>                               103,385
<INTEREST-DEPOSIT>                              38,403
<INTEREST-EXPENSE>                               6,390
<INTEREST-INCOME-NET>                           58,592
<LOAN-LOSSES>                                    1,566
<SECURITIES-GAINS>                                 472
<EXPENSE-OTHER>                                 51,741
<INCOME-PRETAX>                                 20,259
<INCOME-PRE-EXTRAORDINARY>                      14,122
<EXTRAORDINARY>                                (3,840)
<CHANGES>                                            0
<NET-INCOME>                                    10,282
<EPS-PRIMARY>                                      .24
<EPS-DILUTED>                                      .24
<YIELD-ACTUAL>                                       0
<LOANS-NON>                                     10,023
<LOANS-PAST>                                     3,637
<LOANS-TROUBLED>                                   105
<LOANS-PROBLEM>                                      0
<ALLOWANCE-OPEN>                                36,194
<CHARGE-OFFS>                                    4,869
<RECOVERIES>                                     1,628
<ALLOWANCE-CLOSE>                               37,841
<ALLOWANCE-DOMESTIC>                                 0
<ALLOWANCE-FOREIGN>                                  0
<ALLOWANCE-UNALLOCATED>                              0
        

</TABLE>