<TABLE> <S> <C>

<PAGE>

<ARTICLE> 9
<MULTIPLIER> 1,000

<S>                             <C>                     <C>
<PERIOD-TYPE>                   9-MOS                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1999             DEC-31-1998
<PERIOD-START>                             JAN-01-1999             JAN-01-1998
<PERIOD-END>                               SEP-30-1999             SEP-30-1998
<CASH>                                         178,421                 177,989
<INT-BEARING-DEPOSITS>                          18,945                  18,803
<FED-FUNDS-SOLD>                                76,037                  45,591
<TRADING-ASSETS>                                18,723                  38,362
<INVESTMENTS-HELD-FOR-SALE>                    500,811                 841,723
<INVESTMENTS-CARRYING>                         503,898                 837,118
<INVESTMENTS-MARKET>                         1,637,240               1,064,569
<LOANS>                                      3,859,508               3,224,302
<ALLOWANCE>                                     58,119                  50,496
<TOTAL-ASSETS>                               6,543,569               5,554,260
<DEPOSITS>                                   4,396,315               3,803,604
<SHORT-TERM>                                   450,529                 485,897
<LIABILITIES-OTHER>                             83,467                  67,210
<LONG-TERM>                                  1,019,638                 738,589
<PREFERRED-MANDATORY>                          543,714                 407,960
<PREFERRED>                                          0                       0
<COMMON>                                             0                       0
<OTHER-SE>                                           0                       0
<TOTAL-LIABILITIES-AND-EQUITY>               6,543,569               5,554,260
<INTEREST-LOAN>                                224,369                 202,586
<INTEREST-INVEST>                              112,200                  85,693
<INTEREST-OTHER>                                 6,145                   6,240
<INTEREST-TOTAL>                               342,714                 294,519
<INTEREST-DEPOSIT>                             115,547                 103,998
<INTEREST-EXPENSE>                             169,531                 145,703
<INTEREST-INCOME-NET>                          173,183                 148,816
<LOAN-LOSSES>                                   10,902                   6,819
<SECURITIES-GAINS>                             (2,013)                     182
<EXPENSE-OTHER>                                115,104                 110,971
<INCOME-PRETAX>                                116,223                  97,066
<INCOME-PRE-EXTRAORDINARY>                     116,223                  97,006
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                    78,662                  64,842
<EPS-BASIC>                                        .74                     .62
<EPS-DILUTED>                                      .73                     .61
<YIELD-ACTUAL>                                    4.10                    4.24
<LOANS-NON>                                         76                     604
<LOANS-PAST>                                     3,704                   4,915
<LOANS-TROUBLED>                                     0                       0
<LOANS-PROBLEM>                                      0                       0
<ALLOWANCE-OPEN>                                53,018                  47,076
<CHARGE-OFFS>                                    8,832                   8,301
<RECOVERIES>                                     3,031                   3,273
<ALLOWANCE-CLOSE>                               58,119                  50,496
<ALLOWANCE-DOMESTIC>                            58,119                  50,496
<ALLOWANCE-FOREIGN>                                  0                       0
<ALLOWANCE-UNALLOCATED>                              0                       0


</TABLE>