Mars, PA -- U.S. borough in Pennsylvania Population (2000): 1746 Housing Units (2000): 715 Land area (2000): 0.446948 sq. miles (1.157591 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.446948 sq. miles (1.157591 sq. km) FIPS code: 47672 Located within: Pennsylvania (PA), FIPS 42 Location: 40.696594 N, 80.012205 W ZIP Codes (1990): 16046 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Mars, PA Mars