Birchwood, WI -- U.S. village in Wisconsin Population (2000): 518 Housing Units (2000): 269 Land area (2000): 1.126839 sq. miles (2.918499 sq. km) Water area (2000): 0.158103 sq. miles (0.409485 sq. km) Total area (2000): 1.284942 sq. miles (3.327984 sq. km) FIPS code: 07550 Located within: Wisconsin (WI), FIPS 55 Location: 45.657262 N, 91.554367 W ZIP Codes (1990): 54817 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Birchwood, WI Birchwood