<ARTICLE> 9
<LEGEND>
RESTATED FINANCIAL DATA SCHEDULE
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM SOUTHWEST
BANCORP'S QUARTERLY REPORT ON FORM 10-Q FOR THE QUARTER ENDED JUNE 30, 1999, AND
IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000

                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               JUN-30-1999
<CASH>                                          22,787
<INT-BEARING-DEPOSITS>                             992
<FED-FUNDS-SOLD>                                 7,500
<TRADING-ASSETS>                                     0
<INVESTMENTS-HELD-FOR-SALE>                     96,862
<INVESTMENTS-CARRYING>                          74,868
<INVESTMENTS-MARKET>                            74,803
<LOANS>                                        787,134
<ALLOWANCE>                                     10,941
<TOTAL-ASSETS>                               1,019,738
<DEPOSITS>                                     823,086
<SHORT-TERM>                                    98,234
<LIABILITIES-OTHER>                              7,465
<LONG-TERM>                                     25,013
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                         4,081
<OTHER-SE>                                      62,196
<TOTAL-LIABILITIES-AND-EQUITY>               1,020,075
<INTEREST-LOAN>                                 34,372
<INTEREST-INVEST>                                5,065
<INTEREST-OTHER>                                    23
<INTEREST-TOTAL>                                39,460
<INTEREST-DEPOSIT>                              16,990
<INTEREST-EXPENSE>                              20,523
<INTEREST-INCOME-NET>                           18,937
<LOAN-LOSSES>                                    1,100
<SECURITIES-GAINS>                                  85
<EXPENSE-OTHER>                                 14,584
<INCOME-PRETAX>                                  7,115
<INCOME-PRE-EXTRAORDINARY>                       7,115
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     4,565
<EPS-BASIC>                                       1.15
<EPS-DILUTED>                                     1.13
<YIELD-ACTUAL>                                    8.10
<LOANS-NON>                                      3,933
<LOANS-PAST>                                       174
<LOANS-TROUBLED>                                     0
<LOANS-PROBLEM>                                 31,576
<ALLOWANCE-OPEN>                                10,401
<CHARGE-OFFS>                                      924
<RECOVERIES>                                       364
<ALLOWANCE-CLOSE>                               10,941
<ALLOWANCE-DOMESTIC>                            10,941
<ALLOWANCE-FOREIGN>                                  0
<ALLOWANCE-UNALLOCATED>                          2,884