Basin, MT -- U.S. Census Designated Place in Montana Population (2000): 255 Housing Units (2000): 146 Land area (2000): 12.840608 sq. miles (33.257020 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 12.840608 sq. miles (33.257020 sq. km) FIPS code: 04150 Located within: Montana (MT), FIPS 30 Location: 46.276564 N, 112.267756 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Basin, MT Basin