Bar Nunn, WY -- U.S. town in Wyoming Population (2000): 936 Housing Units (2000): 339 Land area (2000): 2.040896 sq. miles (5.285896 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 2.040896 sq. miles (5.285896 sq. km) FIPS code: 05245 Located within: Wyoming (WY), FIPS 56 Location: 42.913444 N, 106.347054 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Bar Nunn, WY Bar Nunn