<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 SEPTEMBER 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>                               SEP-30-1998
<CASH>                                         216,826
<INT-BEARING-DEPOSITS>                           7,482
<FED-FUNDS-SOLD>                                40,990
<TRADING-ASSETS>                                     0
<INVESTMENTS-HELD-FOR-SALE>                  1,940,993
<INVESTMENTS-CARRYING>                          69,399
<INVESTMENTS-MARKET>                            69,399
<LOANS>                                      3,387,246
<ALLOWANCE>                                     45,567
<TOTAL-ASSETS>                               5,981,149
<DEPOSITS>                                   4,829,161
<SHORT-TERM>                                   319,912
<LIABILITIES-OTHER>                            176,082
<LONG-TERM>                                    119,280
<PREFERRED-MANDATORY>                          120,000
<PREFERRED>                                          0
<COMMON>                                           477
<OTHER-SE>                                     416,237
<TOTAL-LIABILITIES-AND-EQUITY>               5,981,149
<INTEREST-LOAN>                                 84,471
<INTEREST-INVEST>                               31,876
<INTEREST-OTHER>                                   764
<INTEREST-TOTAL>                               117,111
<INTEREST-DEPOSIT>                              41,001
<INTEREST-EXPENSE>                              50,191
<INTEREST-INCOME-NET>                           66,920
<LOAN-LOSSES>                                    4,402
<SECURITIES-GAINS>                                 354
<EXPENSE-OTHER>                                 55,531
<INCOME-PRETAX>                                 22,489
<INCOME-PRE-EXTRAORDINARY>                      14,539
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    14,539
<EPS-PRIMARY>                                      .31
<EPS-DILUTED>                                      .31
<YIELD-ACTUAL>                                       0
<LOANS-NON>                                     17,848
<LOANS-PAST>                                     2,863
<LOANS-TROUBLED>                                   180
<LOANS-PROBLEM>                                      0
<ALLOWANCE-OPEN>                                36,194
<CHARGE-OFFS>                                    9,188
<RECOVERIES>                                     2,465
<ALLOWANCE-CLOSE>                               45,567
<ALLOWANCE-DOMESTIC>                                 0
<ALLOWANCE-FOREIGN>                                  0
<ALLOWANCE-UNALLOCATED>                              0
        

</TABLE>