<TABLE> <S> <C>

<PAGE>
<ARTICLE> 9
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM UNAUDITED
FINANCIAL STATEMENTS CONTAINED IN THE COMPANY'S QUARTERLY REPORTS IN FORM 10-Q
FOR THE QUARTER ENDED MARCH 31, 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>                               MAR-31-1998
<CASH>                                         178,625
<INT-BEARING-DEPOSITS>                           3,058
<FED-FUNDS-SOLD>                                14,970
<TRADING-ASSETS>                                     0
<INVESTMENTS-HELD-FOR-SALE>                  1,809,899
<INVESTMENTS-CARRYING>                          64,898
<INVESTMENTS-MARKET>                            64,898
<LOANS>                                      2,713,565
<ALLOWANCE>                                     36,155
<TOTAL-ASSETS>                               5,158,045
<DEPOSITS>                                   4,254,716
<SHORT-TERM>                                   184,493
<LIABILITIES-OTHER>                            133,931
<LONG-TERM>                                    119,529
<PREFERRED-MANDATORY>                          120,000
<PREFERRED>                                          0
<COMMON>                                           407
<OTHER-SE>                                     344,969
<TOTAL-LIABILITIES-AND-EQUITY>               5,158,045
<INTEREST-LOAN>                                 64,517
<INTEREST-INVEST>                               26,270
<INTEREST-OTHER>                                   212
<INTEREST-TOTAL>                                90,999
<INTEREST-DEPOSIT>                              34,881
<INTEREST-EXPENSE>                              39,047
<INTEREST-INCOME-NET>                           51,952
<LOAN-LOSSES>                                    1,339
<SECURITIES-GAINS>                                 476
<EXPENSE-OTHER>                                 43,682
<INCOME-PRETAX>                                 19,279
<INCOME-PRE-EXTRAORDINARY>                      13,853
<EXTRAORDINARY>                                   (68)
<CHANGES>                                            0
<NET-INCOME>                                    13,785
<EPS-PRIMARY>                                      .34<F1>
<EPS-DILUTED>                                      .33<F1>
<YIELD-ACTUAL>                                       0
<LOANS-NON>                                     10,772
<LOANS-PAST>                                     5,748
<LOANS-TROUBLED>                                   123
<LOANS-PROBLEM>                                      0
<ALLOWANCE-OPEN>                                36,194
<CHARGE-OFFS>                                    2,205
<RECOVERIES>                                       827
<ALLOWANCE-CLOSE>                               36,155
<ALLOWANCE-DOMESTIC>                                 0
<ALLOWANCE-FOREIGN>                                  0
<ALLOWANCE-UNALLOCATED>                              0
<FN>
<F1>Earnings per share data has been restated to reflect a two-for-one split
of the Company's common stock, in the form of a 100 percent common stock
dividend payable on May 15, 1998 to shareholders of record as of May 1, 1998.
Prior period financial data has not been restated to reflect this dividend.
</FN>
        

</TABLE>