Circle, MT -- U.S. town in Montana Population (2000): 644 Housing Units (2000): 384 Land area (2000): 0.790055 sq. miles (2.046233 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.790055 sq. miles (2.046233 sq. km) FIPS code: 14950 Located within: Montana (MT), FIPS 30 Location: 47.416987 N, 105.588734 W ZIP Codes (1990): 59215 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Circle, MT Circle