The county in which Sun River Montana is located is ranked as the what most populous county in Montana?
Sun River, Montana Sun River is a census-designated place (CDP) in Cascade County, Montana, United States. The population was 124 at the 2010 census. It is part of the Great Falls, Montana Metropolitan Statistical Area.
Winnett, Montana Winnett is a town in and the county seat of Petroleum County, Montana, United States. The population was 182 at the 2010 census.