Open enrollment 2027
Medicare Advantage in Colorado, county by county.
22 of 64 counties have a page with their 2027 plans, the plans that end and who must pick a new plan. 558,818 people in the state had an individual Medicare Advantage plan in October 2026.
Sources: CMS CY2027 and CY2026 plan files, CMS CPSC enrollment October 2026, CMS 2027 Plan Crosswalk (October 1, 2026). Smaller counties open in the free lookup instead.
Counties
- Adams
- Alamosalookup
- Arapahoe
- Archuletalookup
- Bacalookup
- Bentlookup
- Boulder
- Broomfield
- Chaffee
- Cheyennelookup
- Clear Creeklookup
- Conejoslookup
- Costillalookup
- Crowleylookup
- Custerlookup
- Delta
- Denver
- Doloreslookup
- Douglas
- Eaglelookup
- El Paso
- Elbert
- Fremont
- Garfieldlookup
- Gilpinlookup
- Grandlookup
- Gunnisonlookup
- Hinsdalelookup
- Huerfanolookup
- Jacksonlookup
- Jefferson
- Kiowalookup
- Kit Carsonlookup
- La Plata
- Lakelookup
- Larimer
- Las Animas
- Lincolnlookup
- Loganlookup
- Mesa
- Minerallookup
- Moffatlookup
- Montezumalookup
- Montrose
- Morgan
- Otero
- Ouraylookup
- Parklookup
- Phillipslookup
- Pitkinlookup
- Prowerslookup
- Pueblo
- Rio Blancolookup
- Rio Grandelookup
- Routtlookup
- Saguachelookup
- San Juanlookup
- San Miguellookup
- Sedgwicklookup
- Summitlookup
- Teller
- Washingtonlookup
- Weld
- Yumalookup
All states. Agents can get every county in one file with the AEP 2027 County Kit.