Sullivan, WI -- U.S. village in Wisconsin Population (2000): 688 Housing Units (2000): 321 Land area (2000): 1.120187 sq. miles (2.901271 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 1.120187 sq. miles (2.901271 sq. km) FIPS code: 78175 Located within: Wisconsin (WI), FIPS 55 Location: 43.012791 N, 88.587515 W ZIP Codes (1990): 53178 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Sullivan, WI Sullivan