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.
Elmore County, Idaho Elmore County is a county located in the U.S. state of Idaho. As of the 2010 census, the population was 29,130. The largest city and county seat is Mountain Home.