Brillion, WI -- U.S. city in Wisconsin Population (2000): 2937 Housing Units (2000): 1230 Land area (2000): 2.601829 sq. miles (6.738706 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 2.601829 sq. miles (6.738706 sq. km) FIPS code: 09725 Located within: Wisconsin (WI), FIPS 55 Location: 44.175114 N, 88.066100 W ZIP Codes (1990): 54110 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Brillion, WI Brillion