<TABLE> <S> <C>

<PAGE>
<ARTICLE> 9 
<LEGEND> 
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE 
THIRD QUARTER CONSOLIDATED FINANCIAL STATEMENTS AND IS QUALIFIED IN ITS
ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS. 
</LEGEND> 
<MULTIPLIER> 1,000 
        
<S>                             <C> 
<PERIOD-TYPE>                   9-MOS 
<FISCAL-YEAR-END>                          DEC-31-1996 
<PERIOD-START>                             JAN-01-1996 
<PERIOD-END>                               SEP-30-1996 
<CASH>                                         330,079 
<INT-BEARING-DEPOSITS>                               0 
<FED-FUNDS-SOLD>                                85,327 
<TRADING-ASSETS>                                   307 
<INVESTMENTS-HELD-FOR-SALE>                  1,006,278 
<INVESTMENTS-CARRYING>                         334,790 
<INVESTMENTS-MARKET>                           333,118 
<LOANS>                                      3,263,267 
<ALLOWANCE>                                     52,144 
<TOTAL-ASSETS>                               5,304,554 
<DEPOSITS>                                   4,593,125 
<SHORT-TERM>                                   185,558 
<LIABILITIES-OTHER>                             63,029 
<LONG-TERM>                                      6,097 
<PREFERRED-MANDATORY>                                0 
<PREFERRED>                                          0 
<COMMON>                                        82,168 
<OTHER-SE>                                     374,577 
<TOTAL-LIABILITIES-AND-EQUITY>               5,304,554 
<INTEREST-LOAN>                                215,587 
<INTEREST-INVEST>                               62,525 
<INTEREST-OTHER>                                     0 
<INTEREST-TOTAL>                               278,112 
<INTEREST-DEPOSIT>                             110,996 
<INTEREST-EXPENSE>                             117,775 
<INTEREST-INCOME-NET>                          160,337 
<LOAN-LOSSES>                                    4,871 
<SECURITIES-GAINS>                                  18 
<EXPENSE-OTHER>                                155,326 
<INCOME-PRETAX>                                 76,792 
<INCOME-PRE-EXTRAORDINARY>                      76,792 
<EXTRAORDINARY>                                      0 
<CHANGES>                                            0 
<NET-INCOME>                                    49,795 
<EPS-PRIMARY>                                     1.74 
<EPS-DILUTED>                                     1.72 
<YIELD-ACTUAL>                                    4.66 
<LOANS-NON>                                     15,073 
<LOANS-PAST>                                     6,566 
<LOANS-TROUBLED>                                   813 
<LOANS-PROBLEM>                                      0 
<ALLOWANCE-OPEN>                                51,341 
<CHARGE-OFFS>                                    6,959 
<RECOVERIES>                                     2,891 
<ALLOWANCE-CLOSE>                               52,144 
<ALLOWANCE-DOMESTIC>                            38,066 
<ALLOWANCE-FOREIGN>                                  0 
<ALLOWANCE-UNALLOCATED>                         14,078 
        


</TABLE>