Bison, SD -- U.S. town in South Dakota Population (2000): 373 Housing Units (2000): 227 Land area (2000): 1.001223 sq. miles (2.593156 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 1.001223 sq. miles (2.593156 sq. km) FIPS code: 05620 Located within: South Dakota (SD), FIPS 46 Location: 45.523911 N, 102.464634 W ZIP Codes (1990): 57620 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Bison, SD Bison