Ethan, SD -- U.S. town in South Dakota Population (2000): 330 Housing Units (2000): 138 Land area (2000): 0.244340 sq. miles (0.632838 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.244340 sq. miles (0.632838 sq. km) FIPS code: 20060 Located within: South Dakota (SD), FIPS 46 Location: 43.545878 N, 97.983283 W ZIP Codes (1990): 57334 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Ethan, SD Ethan