<TABLE> <S> <C>

<PAGE>
 
<ARTICLE> 9
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM UNAUDITED
RESTATED FINANCIAL STATEMENTS FOR THE FISCAL YEAR ENDED JUNE 30, 1998 AND IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<RESTATED> 
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          JUN-30-1998
<PERIOD-START>                             JUL-01-1997
<PERIOD-END>                               JUN-30-1998
<CASH>                                         154,126
<INT-BEARING-DEPOSITS>                               0
<FED-FUNDS-SOLD>                                62,886
<TRADING-ASSETS>                                     0
<INVESTMENTS-HELD-FOR-SALE>                    312,509
<INVESTMENTS-CARRYING>                       1,452,644
<INVESTMENTS-MARKET>                         1,454,794
<LOANS>                                      7,857,958
<ALLOWANCE>                                     64,757
<TOTAL-ASSETS>                              10,399,229
<DEPOSITS>                                   6,558,207
<SHORT-TERM>                                 1,034,509
<LIABILITIES-OTHER>                            155,677
<LONG-TERM>                                  1,789,641
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           587
<OTHER-SE>                                     860,608
<TOTAL-LIABILITIES-AND-EQUITY>              10,399,229
<INTEREST-LOAN>                                619,851
<INTEREST-INVEST>                              137,837
<INTEREST-OTHER>                                     0
<INTEREST-TOTAL>                               757,688
<INTEREST-DEPOSIT>                             313,752
<INTEREST-EXPENSE>                             477,389
<INTEREST-INCOME-NET>                          280,299
<LOAN-LOSSES>                                   13,853
<SECURITIES-GAINS>                               3,765
<EXPENSE-OTHER>                                224,198
<INCOME-PRETAX>                                139,769
<INCOME-PRE-EXTRAORDINARY>                      87,413
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    87,413
<EPS-PRIMARY>                                     1.55
<EPS-DILUTED>                                     1.52
<YIELD-ACTUAL>                                    2.88
<LOANS-NON>                                     49,366
<LOANS-PAST>                                         0
<LOANS-TROUBLED>                                 4,302
<LOANS-PROBLEM>                                      0
<ALLOWANCE-OPEN>                                61,261
<CHARGE-OFFS>                                   14,339
<RECOVERIES>                                     3,282
<ALLOWANCE-CLOSE>                               64,757
<ALLOWANCE-DOMESTIC>                             8,462
<ALLOWANCE-FOREIGN>                                  0
<ALLOWANCE-UNALLOCATED>                         56,295
        

</TABLE>