<ARTICLE>                     9
<LEGEND>
     This schedule  contains summary  financial  information  extracted from BOK
     Financial  Corporation's  10-Q for the period  ended  June 30,  2000 and is
     qualified in its entirety by reference to such financial statements.

<CIK>                  0000875357
<NAME>                 BOK Financial Corporation
<MULTIPLIER>                                   1,000

                             
<PERIOD-TYPE>                   6-mos
<FISCAL-YEAR-END>                              Dec-31-2000
<PERIOD-END>                                   Jun-30-2000
<CASH>                                         438,921
<INT-BEARING-DEPOSITS>                                 0
<FED-FUNDS-SOLD>                                 112,636
<TRADING-ASSETS>                                  20,051
<INVESTMENTS-HELD-FOR-SALE>                    2,547,066
<INVESTMENTS-CARRYING>                           227,449
<INVESTMENTS-MARKET>                             226,248
<LOANS>                                        4,941,322
<ALLOWANCE>                                       79,405
<TOTAL-ASSETS>                                 8,819,223
<DEPOSITS>                                     5,600,908
<SHORT-TERM>                                   2,001,250
<LIABILITIES-OTHER>                               78,715
<LONG-TERM>                                      473,869
<PREFERRED-MANDATORY>                                 13
<PREFERRED>                                           12
<COMMON>                                               3
<OTHER-SE>                                       605,837
<TOTAL-LIABILITIES-AND-EQUITY>                 8,819,223
<INTEREST-LOAN>                                  109,198
<INTEREST-INVEST>                                 46,121
<INTEREST-OTHER>                                     995
<INTEREST-TOTAL>                                 156,314
<INTEREST-DEPOSIT>                                48,798
<INTEREST-EXPENSE>                                88,444
<INTEREST-INCOME-NET>                             67,870
<LOAN-LOSSES>                                      3,534
<SECURITIES-GAINS>                                  (682)
<EXPENSE-OTHER>                                   74,917
<INCOME-PRETAX>                                   36,767
<INCOME-PRE-EXTRAORDINARY>                        24,194
<EXTRAORDINARY>                                        0
<CHANGES>                                              0
<NET-INCOME>                                      24,194
<EPS-BASIC>                                         0.48
<EPS-DILUTED>                                       0.44
<YIELD-ACTUAL>                                      3.66
<LOANS-NON>                                       25,387
<LOANS-PAST>                                       9,828
<LOANS-TROUBLED>                                       0
<LOANS-PROBLEM>                                   86,365
<ALLOWANCE-OPEN>                                  77,828
<CHARGE-OFFS>                                      2,867
<RECOVERIES>                                         910
<ALLOWANCE-CLOSE>                                 79,405
<ALLOWANCE-DOMESTIC>                              79,405
<ALLOWANCE-FOREIGN>                                    0
<ALLOWANCE-UNALLOCATED>                                0