<TABLE> <S> <C>

<PAGE>

<ARTICLE> 9
<LEGEND>
This schedule contains summary financial information extracted from the
CoreStates Financial Corp consolidated balance sheet as of September 30, 1997
(restated), June 30, 1997 (restated), and March 31, 1997 (restated) and the
related consolidated statement of income, changes in shareholders' equity, and
other financial data included within management's discussion and analysis of
financial condition and results of operations for the year-to-date ended
September 30, 1997 (restated), June 30, 1997 (restated), and March 31, 1997
(restated) and is qualified in its entirety by reference to such financial
statements.
</LEGEND>
<RESTATED>
<MULTIPLIER> 1,000

<S>                             <C>                     <C>                     <C>
<PERIOD-TYPE>                   9-MOS                   6-MOS                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1997             DEC-31-1997             DEC-31-1997
<PERIOD-START>                             JAN-01-1997             JAN-01-1997             JAN-01-1997
<PERIOD-END>                               SEP-30-1997             JUN-30-1997             MAR-31-1997
<CASH>                                       3,166,454               3,121,012               2,664,641
<INT-BEARING-DEPOSITS>                       3,043,723               2,767,001               2,236,950
<FED-FUNDS-SOLD>                               138,699                 333,896                 550,098
<TRADING-ASSETS>                               326,717                 301,851                 201,324
<INVESTMENTS-HELD-FOR-SALE>                  2,211,382               2,113,698               2,219,564
<INVESTMENTS-CARRYING>                       1,413,351               1,606,059               1,616,147
<INVESTMENTS-MARKET>                         1,417,351               1,608,859               1,615,926
<LOANS>                                     34,514,233              33,893,494              33,091,816
<ALLOWANCE>                                    679,415                 691,380                 704,060
<TOTAL-ASSETS>                              47,590,609              46,846,692              45,064,613
<DEPOSITS>                                  33,740,682              34,212,681              33,070,611
<SHORT-TERM>                                 4,239,227               3,348,031               2,848,999
<LIABILITIES-OTHER>                          1,924,257               1,627,033               1,477,506
<LONG-TERM>                                  3,784,179               3,695,230               3,506,971
<PREFERRED-MANDATORY>                                0                       0                       0
<PREFERRED>                                          0                       0                       0
<COMMON>                                       223,599                 223,599                 223,599
<OTHER-SE>                                   2,889,496               2,954,003               3,219,074
<TOTAL-LIABILITIES-AND-EQUITY>              47,590,609              46,846,692              45,064,613
<INTEREST-LOAN>                              2,237,313               1,471,522                 721,081
<INTEREST-INVEST>                              170,070                 114,230                  57,054
<INTEREST-OTHER>                               133,338                  81,935                  39,194
<INTEREST-TOTAL>                             2,540,721               1,667,687                 817,329
<INTEREST-DEPOSIT>                             646,273                 416,982                 203,879
<INTEREST-EXPENSE>                             949,771                 607,231                 291,225
<INTEREST-INCOME-NET>                        1,590,950               1,060,456                 526,104
<LOAN-LOSSES>                                  143,000                  93,000                  43,000
<SECURITIES-GAINS>                              14,857                   9,834                   4,819
<EXPENSE-OTHER>                              1,204,700                 794,878                 391,904
<INCOME-PRETAX>                                920,102                 613,953                 306,211
<INCOME-PRE-EXTRAORDINARY>                     596,653                 397,839                 198,113
<EXTRAORDINARY>                                      0                       0                       0
<CHANGES>                                            0                       0                       0
<NET-INCOME>                                   596,653                 397,839                 198,113
<EPS-PRIMARY>                                     2.91                    1.91                    0.94
<EPS-DILUTED>                                     2.88                    1.90                    0.93
<YIELD-ACTUAL>                                    5.32                    5.42                    5.47
<LOANS-NON>                                    245,300                 263,900                 233,900
<LOANS-PAST>                                   110,000                 110,000                  99,000
<LOANS-TROUBLED>                                     0                       0                       0
<LOANS-PROBLEM>                                      0                       0                       0
<ALLOWANCE-OPEN>                               710,300                 710,300                 710,300
<CHARGE-OFFS>                                  235,300                 156,400                  71,000
<RECOVERIES>                                    61,400                  44,500                  21,600
<ALLOWANCE-CLOSE>                              679,400                 691,400                 704,000
<ALLOWANCE-DOMESTIC>                           644,400                 656,400                 669,000
<ALLOWANCE-FOREIGN>                             35,000                  35,000                  35,000
<ALLOWANCE-UNALLOCATED>                              0                       0                       0


</TABLE>