Open enrollment 2027
Medicare Advantage in Illinois, county by county.
54 of 102 counties have a page with their 2027 plans, the plans that end and who must pick a new plan. 1,080,128 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
- Alexanderlookup
- Bondlookup
- Boone
- Brownlookup
- Bureau
- Calhounlookup
- Carrolllookup
- Casslookup
- Champaign
- Christian
- Clarklookup
- Claylookup
- Clinton
- Coles
- Cook
- Crawfordlookup
- Cumberlandlookup
- De Wittlookup
- DeKalb
- Douglas
- DuPage
- Edgarlookup
- Edwardslookup
- Effingham
- Fayettelookup
- Fordlookup
- Franklin
- Fulton
- Gallatinlookup
- Greenelookup
- Grundy
- Hamiltonlookup
- Hancocklookup
- Hardinlookup
- Hendersonlookup
- Henry
- Iroquois
- Jackson
- Jasperlookup
- Jefferson
- Jersey
- Jo Daviesslookup
- Johnsonlookup
- Kane
- Kankakee
- Kendall
- Knox
- La Salle
- Lake
- Lawrencelookup
- Lee
- Livingston
- Logan
- Macon
- Macoupin
- Madison
- Marion
- Marshalllookup
- Masonlookup
- Massaclookup
- McDonough
- McHenry
- McLean
- Menardlookup
- Mercerlookup
- Monroe
- Montgomery
- Morgan
- Moultrielookup
- Ogle
- Peoria
- Perrylookup
- Piatt
- Pikelookup
- Popelookup
- Pulaskilookup
- Putnamlookup
- Randolph
- Richlandlookup
- Rock Island
- Salinelookup
- Sangamon
- Schuylerlookup
- Scottlookup
- Shelbylookup
- St. Clair
- Starklookup
- Stephenson
- Tazewell
- Unionlookup
- Vermilion
- Wabashlookup
- Warrenlookup
- Washingtonlookup
- Waynelookup
- Whitelookup
- Whiteside
- Will
- Williamson
- Winnebago
- Woodford
All states. Agents can get every county in one file with the AEP 2027 County Kit.