WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000702340
<NAME> PENN SERIES FUNDS, INC.
<SERIES>
<NUMBER> 13
<NAME> PENN SERIES MID CAP GROWTH FUND
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-END> JUN-30-2000
<INVESTMENTS-AT-COST> 45,571,293
<INVESTMENTS-AT-VALUE> 48,781,306
<RECEIVABLES> 1,252,033
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 50,033,339
<PAYABLE-FOR-SECURITIES> 1,064,056
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 208,006
<TOTAL-LIABILITIES> 1,272,062
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 45,440,480
<SHARES-COMMON-STOCK> 4,561,932
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> (25,801)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 136,586
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 3,210,012
<NET-ASSETS> 48,761,277
<DIVIDEND-INCOME> 8,032
<INTEREST-INCOME> 35,537
<OTHER-INCOME> 0
<EXPENSES-NET> (69,370)
<NET-INVESTMENT-INCOME> (25,801)
<REALIZED-GAINS-CURRENT> 136,586
<APPREC-INCREASE-CURRENT> 3,210,012
<NET-CHANGE-FROM-OPS> 3,320,787
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 47,242,516
<NUMBER-OF-SHARES-REDEEMED> (1,802,036)
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 48,761,277
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 48,920
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 75,253
<AVERAGE-NET-ASSETS> 42,630,107
<PER-SHARE-NAV-BEGIN> 10.00
<PER-SHARE-NII> (.01)
<PER-SHARE-GAIN-APPREC> .70
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 10.69
<EXPENSE-RATIO> 1.00
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>