The county in which Sun River Montana is located is ranked as the what most populous county in Montana?
Cascade County, Montana Cascade County ("cascade" means "waterfall" in French) is a county located in the U.S. state of Montana. As of the 2010 census, the population was 81,327, making it the fifth-most populous county in Montana. Its county seat is Great Falls.
Spokane County, Washington Spokane County is a county located in the U.S. state of Washington. As of the 2010 census the population was 471,221, making it the fourth-most populous county in Washington state. The largest city and county seat is Spokane, the second largest city in the state, behind Seattle.