WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>


<ARTICLE>         6
<LEGEND>
This schedule contains summary financial information extracted from the
Statement of Assets and Liabilities, the Statement of Operations, the Statement
of Changes in Net Assets and the Per Unit Data and Ratios contained in the
financial statements of the fund to which this schedule relates and is qualified
in its entirety by reference to such financial statements.
</LEGEND>
<CIK>   0000878375
<NAME>   ABA MEMBERS/STATE STREET COLLECTIVE TRUST

<SERIES>
   <NUMBER> 0
   <NAME>   BALANCED FUND

<S>                                                                 <C>
<PERIOD-TYPE>                                                       6-MOS
<FISCAL-YEAR-END>                                                   DEC-31-2000
<PERIOD-START>                                                      JAN-1-2000
<PERIOD-END>                                                        JUN-30-2000
<INVESTMENTS-AT-COST>                                               454,534,233
<INVESTMENTS-AT-VALUE>                                              509,684,872
<RECEIVABLES>                                                        16,867,283
<ASSETS-OTHER>                                                           19,238
<OTHER-ITEMS-ASSETS>                                                      1,239
<TOTAL-ASSETS>                                                      526,572,632
<PAYABLE-FOR-SECURITIES>                                             65,369,679
<SENIOR-LONG-TERM-DEBT>                                                       0
<OTHER-ITEMS-LIABILITIES>                                              3,395,053
<TOTAL-LIABILITIES>                                                  68,764,732
<SENIOR-EQUITY>                                                               0
<PAID-IN-CAPITAL-COMMON>                                                      0
<SHARES-COMMON-STOCK>                                                         0
<SHARES-COMMON-PRIOR>                                                         0
<ACCUMULATED-NII-CURRENT>                                                     0
<OVERDISTRIBUTION-NII>                                                        0
<ACCUMULATED-NET-GAINS>                                                       0
<OVERDISTRIBUTION-GAINS>                                                      0
<ACCUM-APPREC-OR-DEPREC>                                                      0
<NET-ASSETS>                                                        457,807,900
<DIVIDEND-INCOME>                                                     1,733,386
<INTEREST-INCOME>                                                     6,158,793
<OTHER-INCOME>                                                                0
<EXPENSES-NET>                                                        1,339,264
<NET-INVESTMENT-INCOME>                                               6,557,173
<REALIZED-GAINS-CURRENT>                                             17,420,353
<APPREC-INCREASE-CURRENT>                                            (9,230,121)
<NET-CHANGE-FROM-OPS>                                                14,747,405
<EQUALIZATION>                                                                0
<DISTRIBUTIONS-OF-INCOME>                                                     0
<DISTRIBUTIONS-OF-GAINS>                                                      0
<DISTRIBUTIONS-OTHER>                                                         0
<NUMBER-OF-SHARES-SOLD>                                                 195,711
<NUMBER-OF-SHARES-REDEEMED>                                            (476,525)
<SHARES-REINVESTED>                                                           0
<NET-CHANGE-IN-ASSETS>                                               (2,520,166)
<ACCUMULATED-NII-PRIOR>                                                       0
<ACCUMULATED-GAINS-PRIOR>                                                     0
<OVERDISTRIB-NII-PRIOR>                                                       0
<OVERDIST-NET-GAINS-PRIOR>                                                    0
<GROSS-ADVISORY-FEES>                                                         0
<INTEREST-EXPENSE>                                                            0
<GROSS-EXPENSE>                                                               0
<AVERAGE-NET-ASSETS>                                                          0
<PER-SHARE-NAV-BEGIN>                                                     61.21
<PER-SHARE-NII>                                                            0.90
<PER-SHARE-GAIN-APPREC>                                                    1.13
<PER-SHARE-DIVIDEND>                                                       0.00
<PER-SHARE-DISTRIBUTIONS>                                                     0
<RETURNS-OF-CAPITAL>                                                          0
<PER-SHARE-NAV-END>                                                       63.24
<EXPENSE-RATIO>                                                            0.59
[AVG-DEBT-OUTSTANDING]                                                        0
[AVG-DEBT-PER-SHARE]                                                          0


</TABLE>