What was the population of the county seat city of Powder River County in 2010?
Powder River County, Montana Powder River County is a county located in the U.S. state of Montana. As of the 2010 census, the population was 1,743. Its county seat is Broadus.
Rio Grande County, Colorado Rio Grande County is one of the 64 counties of the U.S. state of Colorado. As of the 2010 census, the population was 11,982. The county seat is Del Norte. The county is named for the Rio Grande (Spanish language for "Big River"), which flows through the county.