Lake -- U.S. County in Montana Population (2000): 26507 Housing Units (2000): 13605 Land area (2000): 1493.773858 sq. miles (3868.856367 sq. km) Water area (2000): 159.946525 sq. miles (414.259580 sq. km) Total area (2000): 1653.720383 sq. miles (4283.115947 sq. km) Located within: Montana (MT), FIPS 30 Location: 47.652922 N, 114.126444 W Headwords: Lake Lake, MT Lake County Lake County, MT