Roscoe, SD -- U.S. city in South Dakota Population (2000): 324 Housing Units (2000): 167 Land area (2000): 0.468169 sq. miles (1.212553 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.468169 sq. miles (1.212553 sq. km) FIPS code: 55820 Located within: South Dakota (SD), FIPS 46 Location: 45.450306 N, 99.336783 W ZIP Codes (1990): 57471 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Roscoe, SD Roscoe