2026 Medicare Advantage plans in Illinois
Medicare Advantage availability is set county by county, unlike stand-alone Part D. 102 Illinois counties have at least one 2026 plan, 2,659 county-level offerings in all — from 11 in Massac County to 67 in Cook County. Counties with no plan at all are not listed.
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- Adams20
- Alexander18
- Bond41
- Boone39
- Brown21
- Bureau24
- Calhoun36
- Carroll17
- Cass25
- Champaign14
- Christian24
- Clark20
- Clay18
- Clinton43
- Coles18
- Cook67
- Crawford19
- Cumberland18
- De Witt22
- DeKalb32
- Douglas18
- DuPage61
- Edgar17
- Edwards18
- Effingham16
- Fayette25
- Ford21
- Franklin18
- Fulton18
- Gallatin18
- Greene33
- Grundy34
- Hamilton18
- Hancock17
- Hardin18
- Henderson21
- Henry23
- Iroquois27
- Jackson21
- Jasper19
- Jefferson18
- Jersey43
- Jo Daviess20
- Johnson17
- Kane59
- Kankakee52
- Kendall42
- Knox23
- La Salle26
- Lake53
- Lawrence16
- Lee29
- Livingston25
- Logan23
- Macon18
- Macoupin35
- Madison48
- Marion19
- Marshall23
- Mason21
- Massac11
- McDonough19
- McHenry50
- McLean25
- Menard24
- Mercer19
- Monroe41
- Montgomery29
- Morgan21
- Moultrie26
- Ogle35
- Peoria27
- Perry22
- Piatt20
- Pike24
- Pope18
- Pulaski17
- Putnam21
- Randolph25
- Richland20
- Rock Island25
- Saline15
- Sangamon24
- Schuyler20
- Scott25
- Shelby22
- St. Clair46
- Stark21
- Stephenson28
- Tazewell25
- Union21
- Vermilion18
- Wabash16
- Warren17
- Washington34
- Wayne19
- White17
- Whiteside22
- Will64
- Williamson13
- Winnebago43
- Woodford23