<TABLE> <S> <C>

<ARTICLE> 9
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE 
FINANCIAL STATEMENTS OF UST CORP. FOR THE NINE MONTHS ENDED SEPTEMBER 30, 1998 
AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS OF 
FORM 10-Q.
</LEGEND>
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS
       
<S>                             <C>
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1998
<PERIOD-END>                               SEP-30-1998
<EXCHANGE-RATE>                                   1.00
<CASH>                                         110,562
<INT-BEARING-DEPOSITS>                           2,126
<FED-FUNDS-SOLD>                                17,424
<TRADING-ASSETS>                                     0
<INVESTMENTS-HELD-FOR-SALE>                  1,207,579
<INVESTMENTS-CARRYING>                               0
<INVESTMENTS-MARKET>                                 0
<LOANS>                                      4,181,778
<ALLOWANCE>                                     65,146
<TOTAL-ASSETS>                               5,668,911
<DEPOSITS>                                   4,135,218
<SHORT-TERM>                                   837,176
<LIABILITIES-OTHER>                             78,823
<LONG-TERM>                                     89,423
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        26,682
<OTHER-SE>                                     501,589
<TOTAL-LIABILITIES-AND-EQUITY>               5,668,911
<INTEREST-LOAN>                                263,262
<INTEREST-INVEST>                               54,154
<INTEREST-OTHER>                                 3,147
<INTEREST-TOTAL>                               320,563
<INTEREST-DEPOSIT>                              98,922
<INTEREST-EXPENSE>                              34,054
<INTEREST-INCOME-NET>                          187,587
<LOAN-LOSSES>                                    1,010
<SECURITIES-GAINS>                               2,606
<EXPENSE-OTHER>                                159,868
<INCOME-PRETAX>                                 62,184
<INCOME-PRE-EXTRAORDINARY>                      62,184
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    37,919
<EPS-PRIMARY>                                      .90
<EPS-DILUTED>                                      .88
<YIELD-ACTUAL>                                    8.19
<LOANS-NON>                                     25,354
<LOANS-PAST>                                     2,983
<LOANS-TROUBLED>                                 6,681
<LOANS-PROBLEM>                                 58,500
<ALLOWANCE-OPEN>                                68,539
<CHARGE-OFFS>                                   11,076
<RECOVERIES>                                     6,726
<ALLOWANCE-CLOSE>                               65,146
<ALLOWANCE-DOMESTIC>                            65,146
<ALLOWANCE-FOREIGN>                                  0
<ALLOWANCE-UNALLOCATED>                          5,891
        

</TABLE>