Counties in Colorado
Colorado has 64 counties. They are listed by population, largest first, starting with El Paso County, Denver County, and Arapahoe County.
- El Paso County, Colorado
- Denver County, Colorado
- Arapahoe County, Colorado
- Jefferson County, Colorado
- Adams County, Colorado
- Douglas County, Colorado
- Weld County, Colorado
- Larimer County, Colorado
- Boulder County, Colorado
- Pueblo County, Colorado
- Mesa County, Colorado
- Broomfield County, Colorado
- Garfield County, Colorado
- La Plata County, Colorado
- Eagle County, Colorado
- Fremont County, Colorado
- Montrose County, Colorado
- Delta County, Colorado
- Summit County, Colorado
- Elbert County, Colorado
- Morgan County, Colorado
- Montezuma County, Colorado
- Routt County, Colorado
- Teller County, Colorado
- Chaffee County, Colorado
- Logan County, Colorado
- Park County, Colorado
- Otero County, Colorado
- Gunnison County, Colorado
- Alamosa County, Colorado
- Pitkin County, Colorado
- Grand County, Colorado
- Las Animas County, Colorado
- Archuleta County, Colorado
- Moffat County, Colorado
- Prowers County, Colorado
- Rio Grande County, Colorado
- Yuma County, Colorado
- Clear Creek County, Colorado
- San Miguel County, Colorado
- Lake County, Colorado
- Conejos County, Colorado
- Kit Carson County, Colorado
- Huerfano County, Colorado
- Saguache County, Colorado
- Rio Blanco County, Colorado
- Gilpin County, Colorado
- Bent County, Colorado
- Crowley County, Colorado
- Lincoln County, Colorado
- Custer County, Colorado
- Ouray County, Colorado
- Washington County, Colorado
- Phillips County, Colorado
- Costilla County, Colorado
- Baca County, Colorado
- Dolores County, Colorado
- Sedgwick County, Colorado
- Cheyenne County, Colorado
- Kiowa County, Colorado
- Jackson County, Colorado
- Mineral County, Colorado
- San Juan County, Colorado
- Hinsdale County, Colorado