<TABLE> <S> <C>

<PAGE>

<ARTICLE> 9
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE BALANCE
SHEET AS OF JUNE 30, 2000, FROM THE INCOME STATEMENT FOR THE 6 MONTHS ENDED
JUNE 30, 2000 AND FROM MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
CONDITION AND RESULTS OF OPERATIONS FOR THE PERIOD ENDED JUNE 30, 2000, AND IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000

<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-2000
<PERIOD-END>                               JUN-30-2000
<CASH>                                         272,610
<INT-BEARING-DEPOSITS>                             153
<FED-FUNDS-SOLD>                                68,023
<TRADING-ASSETS>                                     0
<INVESTMENTS-HELD-FOR-SALE>                  1,570,138
<INVESTMENTS-CARRYING>                          28,548
<INVESTMENTS-MARKET>                            28,551
<LOANS>                                      6,120,111
<ALLOWANCE>                                    126,508
<TOTAL-ASSETS>                               8,238,956
<DEPOSITS>                                   6,124,439
<SHORT-TERM>                                   929,988
<LIABILITIES-OTHER>                             91,628
<LONG-TERM>                                     82,547
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                       136,106
<OTHER-SE>                                     874,248
<TOTAL-LIABILITIES-AND-EQUITY>               8,238,956
<INTEREST-LOAN>                                256,907
<INTEREST-INVEST>                               47,569
<INTEREST-OTHER>                                   607
<INTEREST-TOTAL>                               305,083
<INTEREST-DEPOSIT>                              82,331
<INTEREST-EXPENSE>                             107,969
<INTEREST-INCOME-NET>                          197,114
<LOAN-LOSSES>                                    8,429
<SECURITIES-GAINS>                                  69
<EXPENSE-OTHER>                                118,277
<INCOME-PRETAX>                                131,566
<INCOME-PRE-EXTRAORDINARY>                     131,566
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    84,122
<EPS-BASIC>                                       1.23
<EPS-DILUTED>                                     1.22
<YIELD-ACTUAL>                                    5.27
<LOANS-NON>                                     26,470
<LOANS-PAST>                                         0
<LOANS-TROUBLED>                                     0
<LOANS-PROBLEM>                                  1,566
<ALLOWANCE-OPEN>                               117,997
<CHARGE-OFFS>                                    1,886
<RECOVERIES>                                     1,968
<ALLOWANCE-CLOSE>                              126,508
<ALLOWANCE-DOMESTIC>                           126,508
<ALLOWANCE-FOREIGN>                                  0
<ALLOWANCE-UNALLOCATED>                              0


</TABLE>