Choteau is a city in and the county seat of Teton County, Montana, United States. It lies along U.S. Routes 89 and 287 (the latter terminating at the former in this city) about 20 miles (32 km) east of the Rocky Mountains, near Flathead National Forest, the Rocky Mountain Division of Lewis and Clark National Forest, and Glacier National Park. The population was 1,684 at the 2010 census.