List of Counties in Colorado
Colorado is a diverse state in the western US with 64 counties. This list can help with travel planning, real estate searches, or learning about local history.
Checked 16 May 2026 · Sources: U.S. Census Bureau (decennial census, ACS)
Each county offers unique landscapes and attractions, from mountains to plains.
Here’s the full list:
- Adams
- Alamosa
- Arapahoe
- Archuleta
- Baca
- Bent
- Boulder
- Broomfield
- Chaffee
- Cheyenne
- Clear Creek
- Conejos
- Costilla
- Crowley
- Custer
- Delta
- Denver
- Dolores
- Douglas
- Eagle
- El Paso
- Elbert
- Fremont
- Garfield
- Gilpin
- Grand
- Gunnison
- Hinsdale
- Huerfano
- Jackson
- Jefferson
- Kiowa
- Kit Carson
- La Plata
- Larimer
- Las Animas
- Lincoln
- Logan
- Mesa
- Mineral
- Moffat
- Montezuma
- Montrose
- Morgan
- Otero
- Ouray
- Park
- Phillips
- Pitkin
- Prowers
- Pueblo
- Rio Blanco
- Rio Grande
- Routt
- Saguache
- San Juan
- San Miguel
- Sedgwick
- Summit
- Teller
- Washington
- Weld
- Yuma
Explore these counties for outdoor adventures or cultural experiences.
If you’re visiting Colorado, check local resources for more details.
Was this helpful?Something wrong or missing? Tell us — we read every report and fix issues fast.