2027 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 2027 plan, 2,899 county-level offerings in all — from 9 in Williamson County to 67 in Cook County. Counties with no plan at all are not listed.
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2027 drug-by-drug coverage is not published by CMS yet. The drug lookup covers 2026, whose formulary is live.
- Adams21
- Alexander26
- Bond44
- Boone41
- Brown20
- Bureau31
- Calhoun41
- Carroll26
- Cass26
- Champaign22
- Christian28
- Clark24
- Clay21
- Clinton47
- Coles21
- Cook67
- Crawford23
- Cumberland21
- De Witt26
- DeKalb32
- Douglas30
- DuPage61
- Edgar19
- Edwards20
- Effingham18
- Fayette29
- Ford22
- Franklin18
- Fulton23
- Gallatin18
- Greene33
- Grundy39
- Hamilton18
- Hancock19
- Hardin18
- Henderson24
- Henry33
- Iroquois30
- Jackson20
- Jasper21
- Jefferson18
- Jersey44
- Jo Daviess28
- Johnson24
- Kane58
- Kankakee49
- Kendall42
- Knox25
- La Salle35
- Lake48
- Lawrence20
- Lee32
- Livingston24
- Logan26
- Macon21
- Macoupin34
- Madison47
- Marion18
- Marshall30
- Mason23
- Massac22
- McDonough22
- McHenry40
- McLean24
- Menard25
- Mercer27
- Monroe41
- Montgomery34
- Morgan25
- Moultrie29
- Ogle38
- Peoria25
- Perry26
- Piatt24
- Pike22
- Pope24
- Pulaski22
- Putnam28
- Randolph15
- Richland20
- Rock Island33
- Saline16
- Sangamon30
- Schuyler21
- Scott28
- Shelby23
- St. Clair48
- Stark24
- Stephenson33
- Tazewell25
- Union28
- Vermilion23
- Wabash20
- Warren18
- Washington31
- Wayne20
- White20
- Whiteside23
- Will63
- Williamson9
- Winnebago43
- Woodford20