Fort Peck, MT -- U.S. town in Montana Population (2000): 240 Housing Units (2000): 99 Land area (2000): 0.872966 sq. miles (2.260971 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.872966 sq. miles (2.260971 sq. km) FIPS code: 28450 Located within: Montana (MT), FIPS 30 Location: 48.007858 N, 106.450327 W ZIP Codes (1990): 59223 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Fort Peck, MT Fort Peck