Wallace, SD -- U.S. town in South Dakota Population (2000): 86 Housing Units (2000): 45 Land area (2000): 0.134833 sq. miles (0.349217 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.134833 sq. miles (0.349217 sq. km) FIPS code: 68420 Located within: South Dakota (SD), FIPS 46 Location: 45.085069 N, 97.478896 W ZIP Codes (1990): 57272 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Wallace, SD Wallace