<TABLE> <S> <C>

<PAGE>

<ARTICLE> 9
<LEGEND> This schedule contains summary financial information extracted from
SEC Form 10-K and is qualified in its entirety by reference to such financial
statements.
</LEGEND>
<RESTATED>
<MULTIPLIER> 1,000

<S>                             <C>                       <C>                         <C>
<PERIOD-TYPE>                   12-MOS                    12-MOS                      12-MOS
<FISCAL-YEAR-END>                          DEC-31-1997                 DEC-31-1996                DEC-31-1995
<PERIOD-START>                             JAN-01-1997                 JAN-01-1996                JAN-01-1995
<PERIOD-END>                               DEC-31-1997                 DEC-31-1996                DEC-31-1995
<CASH>                                          32,893                      38,816                     37,406
<INT-BEARING-DEPOSITS>                          10,239                         289                        105
<FED-FUNDS-SOLD>                                     0                      22,150                          0
<TRADING-ASSETS>                                     0                           0                          0
<INVESTMENTS-HELD-FOR-SALE>                    159,416                     135,546                    128,172
<INVESTMENTS-CARRYING>                         142,682                     130,408                    128,020
<INVESTMENTS-MARKET>                           145,639                     132,057                    130,214
<LOANS>                                        447,332                     420,164                    362,728
<ALLOWANCE>                                      4,329                       4,109                      3,932
<TOTAL-ASSETS>                                 816,144                     768,655                    678,102
<DEPOSITS>                                     627,763                     648,303                    555,086
<SHORT-TERM>                                    92,616                      55,187                     64,202
<LIABILITIES-OTHER>                              9,104                       5,612                      5,052
<LONG-TERM>                                     15,000                           0                          0
<COMMON>                                         7,271                       7,091                      7,067
<PREFERRED-MANDATORY>                                0                           0                          0
<PREFERRED>                                          0                           0                          0
<OTHER-SE>                                      64,390                      52,462                     46,695
<TOTAL-LIABILITIES-AND-EQUITY>                 816,144                     768,655                    678,102
<INTEREST-LOAN>                                 36,305                      36,163                     32,287
<INTEREST-INVEST>                               17,560                      15,353                     14,953
<INTEREST-OTHER>                                   822                         956                      1,032
<INTEREST-TOTAL>                                54,687                      52,472                     48,272
<INTEREST-DEPOSIT>                              23,373                      22,538                     19,609
<INTEREST-EXPENSE>                              27,255                      25,638                     22,796
<INTEREST-INCOME-NET>                           27,432                      26,834                     25,476
<LOAN-LOSSES>                                    1,550                       1,510                      1,050
<SECURITIES-GAINS>                                 (9)                          14                        127
<EXPENSE-OTHER>                                 20,708                      20,435                     19,924
<INCOME-PRETAX>                                 20,715                       9,536                      8,688
<INCOME-PRE-EXTRAORDINARY>                      20,715                       9,536                      8,688
<EXTRAORDINARY>                                      0                           0                          0
<CHANGES>                                            0                           0                          0
<NET-INCOME>                                    13,753                       7,107                      6,692
<EPS-PRIMARY>                                     4.18                        2.11                       1.99
<EPS-DILUTED>                                     4.06                        2.06                       1.95
<YIELD-ACTUAL>                                    3.97                        4.20                       4.54
<LOANS-NON>                                          0                       1,730                          0
<LOANS-PAST>                                       378                         349                        104
<LOANS-TROUBLED>                                     0                           0                          0
<LOANS-PROBLEM>                                      0                           0                          0
<ALLOWANCE-OPEN>                                 4,109                       3,932                      3,859
<CHARGE-OFFS>                                    1,505                       1,511                      1,112
<RECOVERIES>                                       175                         178                        135
<ALLOWANCE-CLOSE>                                4,329                       4,109                      3,932
<ALLOWANCE-DOMESTIC>                             4,329                       4,109                      3,932
<ALLOWANCE-FOREIGN>                                  0                           0                          0
<ALLOWANCE-UNALLOCATED>                              0                           0                          0


</TABLE>