<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000880797
<NAME> Fidelity Union Street Trust II
<SERIES>
<NUMBER> 51
<NAME> Fidelity Municipal Money Market Fund
<MULTIPLIER> 1,000
<S>
<C>
<PERIOD-TYPE>
YEAR
<FISCAL-YEAR-END>
AUG-31-2000
<PERIOD-END>
AUG-31-2000
<INVESTMENTS-AT-COST>
7,830,913
<INVESTMENTS-AT-VALUE>
7,830,913
<RECEIVABLES>
188,962
<ASSETS-OTHER>
90
<OTHER-ITEMS-ASSETS>
0
<TOTAL-ASSETS>
8,019,965
<PAYABLE-FOR-SECURITIES>
22,023
<SENIOR-LONG-TERM-DEBT>
0
<OTHER-ITEMS-LIABILITIES>
95,718
<TOTAL-LIABILITIES>
117,741
<SENIOR-EQUITY>
0
<PAID-IN-CAPITAL-COMMON>
7,902,795
<SHARES-COMMON-STOCK>
7,902,787
<SHARES-COMMON-PRIOR>
6,313,834
<ACCUMULATED-NII-CURRENT>
0
<OVERDISTRIBUTION-NII>
0
<ACCUMULATED-NET-GAINS>
(572)
<OVERDISTRIBUTION-GAINS>
0
<ACCUM-APPREC-OR-DEPREC>
1
<NET-ASSETS>
7,902,224
<DIVIDEND-INCOME>
0
<INTEREST-INCOME>
288,440
<OTHER-INCOME>
0
<EXPENSES-NET>
33,650
<NET-INVESTMENT-INCOME>
254,790
<REALIZED-GAINS-CURRENT>
27
<APPREC-INCREASE-CURRENT>
1
<NET-CHANGE-FROM-OPS>
254,818
<EQUALIZATION>
0
<DISTRIBUTIONS-OF-INCOME>
254,790
<DISTRIBUTIONS-OF-GAINS>
0
<DISTRIBUTIONS-OTHER>
0
<NUMBER-OF-SHARES-SOLD>
34,096,914
<NUMBER-OF-SHARES-REDEEMED>
32,755,619
<SHARES-REINVESTED>
247,658
<NET-CHANGE-IN-ASSETS>
1,588,981
<ACCUMULATED-NII-PRIOR>
0
<ACCUMULATED-GAINS-PRIOR>
(599)
<OVERDISTRIB-NII-PRIOR>
0
<OVERDIST-NET-GAINS-PRIOR>
0
<GROSS-ADVISORY-FEES>
20,057
<INTEREST-EXPENSE>
0
<GROSS-EXPENSE>
33,674
<AVERAGE-NET-ASSETS>
7,262,557
<PER-SHARE-NAV-BEGIN>
1.000
<PER-SHARE-NII>
.035
<PER-SHARE-GAIN-APPREC>
0
<PER-SHARE-DIVIDEND>
.035
<PER-SHARE-DISTRIBUTIONS>
0
<RETURNS-OF-CAPITAL>
0
<PER-SHARE-NAV-END>
1.000
<EXPENSE-RATIO>
46
</TABLE>
