Fort Benton is a city in and the county seat of Chouteau County, Montana, United States. Established in 1846, Fort Benton is the oldest settlement in Montana. The city's waterfront area, the most important aspect of its 19th-century growth, was designated the Fort Benton Historic District, a National Historic Landmark, in 1961. The population was 1,464 at the 2010 census.
