<TABLE> <S> <C>

<PAGE>
 
<ARTICLE> 9
<LEGEND> 
THE SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE FINANCIAL
STATEMENTS OF SOUTH JERSEY FINANCIAL CORPORATION, INC. AT AND FOR THE THREE
MONTHS ENDED MARCH 31, 1999 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO
SUCH FINANCIAL STATEMENTS.
</LEGEND> 
<MULTIPLIER> 1,000
       
<S>                               <C>
<PERIOD-TYPE>                     3-MOS
<FISCAL-YEAR-END>                                              DEC-31-1999
<PERIOD-START>                                                 JAN-01-1999
<PERIOD-END>                                                   MAR-31-1999
<CASH>                                                               4,405
<INT-BEARING-DEPOSITS>                                                 396
<FED-FUNDS-SOLD>                                                    17,100
<TRADING-ASSETS>                                                         0
<INVESTMENTS-HELD-FOR-SALE>                                         36,886
<INVESTMENTS-CARRYING>                                             134,468
<INVESTMENTS-MARKET>                                               135,186
<LOANS>                                                            118,989
<ALLOWANCE>                                                          1,053
<TOTAL-ASSETS>                                                     318,450
<DEPOSITS>                                                         236,369
<SHORT-TERM>                                                         1,000
<LIABILITIES-OTHER>                                                  2,041
<LONG-TERM>                                                         20,076
<PREFERRED-MANDATORY>                                                    0
<PREFERRED>                                                              0
<COMMON>                                                                38
<OTHER-SE>                                                          58,926
<TOTAL-LIABILITIES-AND-EQUITY>                                     318,450
<INTEREST-LOAN>                                                      2,097
<INTEREST-INVEST>                                                    2,940
<INTEREST-OTHER>                                                         0
<INTEREST-TOTAL>                                                     5,037
<INTEREST-DEPOSIT>                                                   2,491
<INTEREST-EXPENSE>                                                   2,756
<INTEREST-INCOME-NET>                                                2,281
<LOAN-LOSSES>                                                           75
<SECURITIES-GAINS>                                                       0
<EXPENSE-OTHER>                                                      4,280
<INCOME-PRETAX>                                                     (1,931)
<INCOME-PRE-EXTRAORDINARY>                                          (1,931)
<EXTRAORDINARY>                                                          0
<CHANGES>                                                                0
<NET-INCOME>                                                        (1,146)
<EPS-PRIMARY>                                                        (0.33)
<EPS-DILUTED>                                                        (0.33)
<YIELD-ACTUAL>                                                        6.70
<LOANS-NON>                                                            468
<LOANS-PAST>                                                            29
<LOANS-TROUBLED>                                                         0
<LOANS-PROBLEM>                                                        594
<ALLOWANCE-OPEN>                                                       940
<CHARGE-OFFS>                                                            0
<RECOVERIES>                                                            38
<ALLOWANCE-CLOSE>                                                    1,053
<ALLOWANCE-DOMESTIC>                                                 1,053
<ALLOWANCE-FOREIGN>                                                      0
<ALLOWANCE-UNALLOCATED>                                                173
        

</TABLE>