Boneau, MT -- U.S. Census Designated Place in Montana Population (2000): 190 Housing Units (2000): 42 Land area (2000): 2.295459 sq. miles (5.945212 sq. km) Water area (2000): 0.096802 sq. miles (0.250717 sq. km) Total area (2000): 2.392261 sq. miles (6.195929 sq. km) FIPS code: 08162 Located within: Montana (MT), FIPS 30 Location: 48.290258 N, 109.860880 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Boneau, MT Boneau