Reliance, SD -- U.S. town in South Dakota Population (2000): 206 Housing Units (2000): 92 Land area (2000): 1.087756 sq. miles (2.817276 sq. km) Water area (2000): 0.052724 sq. miles (0.136555 sq. km) Total area (2000): 1.140480 sq. miles (2.953831 sq. km) FIPS code: 54020 Located within: South Dakota (SD), FIPS 46 Location: 43.878490 N, 99.601138 W ZIP Codes (1990): 57569 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Reliance, SD Reliance