Prairie -- U.S. County in Montana Population (2000): 1199 Housing Units (2000): 718 Land area (2000): 1736.550909 sq. miles (4497.646015 sq. km) Water area (2000): 6.004578 sq. miles (15.551784 sq. km) Total area (2000): 1742.555487 sq. miles (4513.197799 sq. km) Located within: Montana (MT), FIPS 30 Location: 46.887225 N, 105.368636 W Headwords: Prairie Prairie, MT Prairie County Prairie County, MT