Rio, WI -- U.S. village in Wisconsin Population (2000): 938 Housing Units (2000): 401 Land area (2000): 1.248275 sq. miles (3.233016 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 1.248275 sq. miles (3.233016 sq. km) FIPS code: 68100 Located within: Wisconsin (WI), FIPS 55 Location: 43.447914 N, 89.240557 W ZIP Codes (1990): 53960 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Rio, WI Rio