Rio Blanco County is a county located in the U.S. state of Colorado. As of the 2020 census, the population was 6,529. The county seat is Meeker. The name of the county is the Spanish name for the White River which runs through it.

Meeker is the Statutory Town in and the county seat of Rio Blanco County, Colorado, United States, that is the most populous municipality in the county. The town population was 2,374 at the 2020 United States Census.