<TABLE> <S> <C>

<PAGE>
 
<ARTICLE> 9
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM UNAUDITED
RESTATED INTERIM FINANCIAL STATEMENTS AS OF AND FOR THE NINE MONTHS ENDED MARCH
31, 1998 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL
STATEMENTS.
</LEGEND>
<RESTATED> 
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          JUN-30-1998
<PERIOD-START>                             JUL-01-1997
<PERIOD-END>                               MAR-31-1998
<CASH>                                         129,621
<INT-BEARING-DEPOSITS>                               0
<FED-FUNDS-SOLD>                                30,602
<TRADING-ASSETS>                                     0
<INVESTMENTS-HELD-FOR-SALE>                    414,365
<INVESTMENTS-CARRYING>                       1,523,086
<INVESTMENTS-MARKET>                         1,529,544
<LOANS>                                      7,853,635
<ALLOWANCE>                                     64,470
<TOTAL-ASSETS>                              10,489,056
<DEPOSITS>                                   6,732,109
<SHORT-TERM>                                 1,256,258
<LIABILITIES-OTHER>                            155,880
<LONG-TERM>                                  1,506,113
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           585
<OTHER-SE>                                     838,111
<TOTAL-LIABILITIES-AND-EQUITY>              10,489,056
<INTEREST-LOAN>                                462,027
<INTEREST-INVEST>                              105,344
<INTEREST-OTHER>                                     0
<INTEREST-TOTAL>                               567,371
<INTEREST-DEPOSIT>                             237,032
<INTEREST-EXPENSE>                             359,647
<INTEREST-INCOME-NET>                          207,724
<LOAN-LOSSES>                                   10,464
<SECURITIES-GAINS>                               2,775
<EXPENSE-OTHER>                                166,713
<INCOME-PRETAX>                                103,752
<INCOME-PRE-EXTRAORDINARY>                      65,038
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    65,038
<EPS-PRIMARY>                                     1.16
<EPS-DILUTED>                                     1.13
<YIELD-ACTUAL>                                    2.85
<LOANS-NON>                                     49,895
<LOANS-PAST>                                         0
<LOANS-TROUBLED>                                 4,968
<LOANS-PROBLEM>                                      0
<ALLOWANCE-OPEN>                                61,261
<CHARGE-OFFS>                                   10,737
<RECOVERIES>                                     3,905
<ALLOWANCE-CLOSE>                               64,470
<ALLOWANCE-DOMESTIC>                             9,075
<ALLOWANCE-FOREIGN>                                  0
<ALLOWANCE-UNALLOCATED>                         55,395
        

</TABLE>