Missouri · 115 counties

Medicare in Missouri by county

Official figures for each of Missouri's 115 counties: how many people have Medicare, how many are in Medicare Advantage, and how many plans are offered for 2027. Each page also lists licensed local agents and free help.

Last reviewed October 27, 2026. General information, not advice about any plan.

Most people with Medicare

Across Missouri, 1,373,697 people had Medicare in July 2026, 55% of them in Medicare Advantage or another Medicare health plan. The counties with the most:

St. Louis County 228,591 with Medicare · 57% in Medicare Advantage · 38 Advantage plans with drug coverage
Jackson County 137,104 with Medicare · 56% in Medicare Advantage · 28 Advantage plans with drug coverage
St. Charles County 87,446 with Medicare · 61% in Medicare Advantage · 38 Advantage plans with drug coverage
Greene County 65,018 with Medicare · 62% in Medicare Advantage · 30 Advantage plans with drug coverage
Jefferson County 50,177 with Medicare · 67% in Medicare Advantage · 38 Advantage plans with drug coverage
Clay County 48,979 with Medicare · 48% in Medicare Advantage · 28 Advantage plans with drug coverage
St. Louis city 48,419 with Medicare · 65% in Medicare Advantage · 38 Advantage plans with drug coverage
Boone County 32,437 with Medicare · 48% in Medicare Advantage · 22 Advantage plans with drug coverage
Franklin County 27,839 with Medicare · 73% in Medicare Advantage · 33 Advantage plans with drug coverage
Jasper County 27,150 with Medicare · 51% in Medicare Advantage · 25 Advantage plans with drug coverage

All 115 counties, A to Z

Adair County4,984 with Medicare · 27% in Medicare Advantage · 10 Advantage plans with drug coverage
Andrew County3,958 with Medicare · 28% in Medicare Advantage · 12 Advantage plans with drug coverage
Atchison County1,459 with Medicare · 21% in Medicare Advantage · 13 Advantage plans with drug coverage
Audrain County5,841 with Medicare · 41% in Medicare Advantage · 21 Advantage plans with drug coverage
Barry County9,303 with Medicare · 61% in Medicare Advantage · 29 Advantage plans with drug coverage
Barton County3,019 with Medicare · 48% in Medicare Advantage · 22 Advantage plans with drug coverage
Bates County4,136 with Medicare · 53% in Medicare Advantage · 16 Advantage plans with drug coverage
Benton County7,613 with Medicare · 52% in Medicare Advantage · 16 Advantage plans with drug coverage
Bollinger County2,874 with Medicare · 45% in Medicare Advantage · 15 Advantage plans with drug coverage
Boone County32,437 with Medicare · 48% in Medicare Advantage · 22 Advantage plans with drug coverage
Buchanan County19,115 with Medicare · 37% in Medicare Advantage · 7 Advantage plans with drug coverage
Butler County10,799 with Medicare · 38% in Medicare Advantage · 10 Advantage plans with drug coverage
Caldwell County2,263 with Medicare · 42% in Medicare Advantage · 16 Advantage plans with drug coverage
Callaway County10,259 with Medicare · 54% in Medicare Advantage · 24 Advantage plans with drug coverage
Camden County14,371 with Medicare · 49% in Medicare Advantage · 14 Advantage plans with drug coverage
Cape Girardeau County18,084 with Medicare · 34% in Medicare Advantage · 15 Advantage plans with drug coverage
Carroll County2,470 with Medicare · 39% in Medicare Advantage · 12 Advantage plans with drug coverage
Carter County1,642 with Medicare · 44% in Medicare Advantage · 16 Advantage plans with drug coverage
Cass County24,369 with Medicare · 54% in Medicare Advantage · 22 Advantage plans with drug coverage
Cedar County4,162 with Medicare · 59% in Medicare Advantage · 21 Advantage plans with drug coverage
Chariton County2,046 with Medicare · 28% in Medicare Advantage · 20 Advantage plans with drug coverage
Christian County20,345 with Medicare · 61% in Medicare Advantage · 30 Advantage plans with drug coverage
Clark County1,592 with Medicare · 25% in Medicare Advantage · 3 Advantage plans with drug coverage
Clay County48,979 with Medicare · 48% in Medicare Advantage · 28 Advantage plans with drug coverage
Clinton County5,302 with Medicare · 42% in Medicare Advantage · 18 Advantage plans with drug coverage
Cole County17,305 with Medicare · 56% in Medicare Advantage · 16 Advantage plans with drug coverage
Cooper County4,171 with Medicare · 47% in Medicare Advantage · 15 Advantage plans with drug coverage
Crawford County6,105 with Medicare · 66% in Medicare Advantage · 38 Advantage plans with drug coverage
Dade County2,258 with Medicare · 63% in Medicare Advantage · 26 Advantage plans with drug coverage
Dallas County4,694 with Medicare · 70% in Medicare Advantage · 30 Advantage plans with drug coverage
Daviess County1,937 with Medicare · 33% in Medicare Advantage · 12 Advantage plans with drug coverage
DeKalb County2,186 with Medicare · 34% in Medicare Advantage · 13 Advantage plans with drug coverage
Dent County4,141 with Medicare · 45% in Medicare Advantage · 24 Advantage plans with drug coverage
Douglas County2,925 with Medicare · 73% in Medicare Advantage · 25 Advantage plans with drug coverage
Dunklin County6,881 with Medicare · 46% in Medicare Advantage · 7 Advantage plans with drug coverage
Franklin County27,839 with Medicare · 73% in Medicare Advantage · 33 Advantage plans with drug coverage
Gasconade County4,495 with Medicare · 59% in Medicare Advantage · 27 Advantage plans with drug coverage
Gentry County1,546 with Medicare · 24% in Medicare Advantage · 11 Advantage plans with drug coverage
Greene County65,018 with Medicare · 62% in Medicare Advantage · 30 Advantage plans with drug coverage
Grundy County2,529 with Medicare · 30% in Medicare Advantage · 13 Advantage plans with drug coverage
Harrison County2,289 with Medicare · 27% in Medicare Advantage · 8 Advantage plans with drug coverage
Henry County6,575 with Medicare · 52% in Medicare Advantage · 16 Advantage plans with drug coverage
Hickory County3,001 with Medicare · 66% in Medicare Advantage · 21 Advantage plans with drug coverage
Holt County1,214 with Medicare · 27% in Medicare Advantage · 13 Advantage plans with drug coverage
Howard County2,397 with Medicare · 45% in Medicare Advantage · 13 Advantage plans with drug coverage
Howell County11,524 with Medicare · 54% in Medicare Advantage · 23 Advantage plans with drug coverage
Iron County2,994 with Medicare · 48% in Medicare Advantage · 21 Advantage plans with drug coverage
Jackson County137,104 with Medicare · 56% in Medicare Advantage · 28 Advantage plans with drug coverage
Jasper County27,150 with Medicare · 51% in Medicare Advantage · 25 Advantage plans with drug coverage
Jefferson County50,177 with Medicare · 67% in Medicare Advantage · 38 Advantage plans with drug coverage
Johnson County9,674 with Medicare · 45% in Medicare Advantage · 15 Advantage plans with drug coverage
Knox County974 with Medicare · 23% in Medicare Advantage · 11 Advantage plans with drug coverage
Laclede County9,161 with Medicare · 69% in Medicare Advantage · 25 Advantage plans with drug coverage
Lafayette County8,157 with Medicare · 51% in Medicare Advantage · 26 Advantage plans with drug coverage
Lawrence County8,993 with Medicare · 66% in Medicare Advantage · 29 Advantage plans with drug coverage
Lewis County2,365 with Medicare · 31% in Medicare Advantage · 11 Advantage plans with drug coverage
Lincoln County12,889 with Medicare · 63% in Medicare Advantage · 32 Advantage plans with drug coverage
Linn County3,279 with Medicare · 31% in Medicare Advantage · 13 Advantage plans with drug coverage
Livingston County3,606 with Medicare · 32% in Medicare Advantage · 15 Advantage plans with drug coverage
Macon County4,245 with Medicare · 32% in Medicare Advantage · 11 Advantage plans with drug coverage
Madison County3,388 with Medicare · 52% in Medicare Advantage · 14 Advantage plans with drug coverage
Maries County2,041 with Medicare · 52% in Medicare Advantage · 18 Advantage plans with drug coverage
Marion County7,108 with Medicare · 34% in Medicare Advantage · 11 Advantage plans with drug coverage
McDonald County4,634 with Medicare · 58% in Medicare Advantage · 22 Advantage plans with drug coverage
Mercer County837 with Medicare · 33% in Medicare Advantage · 13 Advantage plans with drug coverage
Miller County5,936 with Medicare · 54% in Medicare Advantage · 20 Advantage plans with drug coverage
Mississippi County2,806 with Medicare · 42% in Medicare Advantage · 13 Advantage plans with drug coverage
Moniteau County3,179 with Medicare · 54% in Medicare Advantage · 15 Advantage plans with drug coverage
Monroe County2,422 with Medicare · 35% in Medicare Advantage · 10 Advantage plans with drug coverage
Montgomery County3,325 with Medicare · 52% in Medicare Advantage · 22 Advantage plans with drug coverage
Morgan County6,219 with Medicare · 52% in Medicare Advantage · 18 Advantage plans with drug coverage
New Madrid County3,790 with Medicare · 43% in Medicare Advantage · 7 Advantage plans with drug coverage
Newton County12,848 with Medicare · 48% in Medicare Advantage · 25 Advantage plans with drug coverage
Nodaway County4,407 with Medicare · 21% in Medicare Advantage · 11 Advantage plans with drug coverage
Oregon County2,700 with Medicare · 52% in Medicare Advantage · 18 Advantage plans with drug coverage
Osage County3,032 with Medicare · 53% in Medicare Advantage · 19 Advantage plans with drug coverage
Ozark County3,072 with Medicare · 57% in Medicare Advantage · 19 Advantage plans with drug coverage
Pemiscot County3,413 with Medicare · 51% in Medicare Advantage · 13 Advantage plans with drug coverage
Perry County4,726 with Medicare · 33% in Medicare Advantage · 24 Advantage plans with drug coverage
Pettis County9,363 with Medicare · 47% in Medicare Advantage · 9 Advantage plans with drug coverage
Phelps County9,937 with Medicare · 50% in Medicare Advantage · 23 Advantage plans with drug coverage
Pike County4,227 with Medicare · 41% in Medicare Advantage · 13 Advantage plans with drug coverage
Platte County20,887 with Medicare · 44% in Medicare Advantage · 28 Advantage plans with drug coverage
Polk County7,930 with Medicare · 65% in Medicare Advantage · 30 Advantage plans with drug coverage
Pulaski County7,779 with Medicare · 45% in Medicare Advantage · 29 Advantage plans with drug coverage
Putnam County1,280 with Medicare · 28% in Medicare Advantage · 13 Advantage plans with drug coverage
Ralls County2,735 with Medicare · 34% in Medicare Advantage · 11 Advantage plans with drug coverage
Randolph County5,670 with Medicare · 41% in Medicare Advantage · 11 Advantage plans with drug coverage
Ray County5,254 with Medicare · 51% in Medicare Advantage · 22 Advantage plans with drug coverage
Reynolds County1,660 with Medicare · 50% in Medicare Advantage · 18 Advantage plans with drug coverage
Ripley County3,415 with Medicare · 40% in Medicare Advantage · 14 Advantage plans with drug coverage
Saline County5,065 with Medicare · 44% in Medicare Advantage · 13 Advantage plans with drug coverage
Schuyler County1,039 with Medicare · 30% in Medicare Advantage · 10 Advantage plans with drug coverage
Scotland County988 with Medicare · 20% in Medicare Advantage · 3 Advantage plans with drug coverage
Scott County9,737 with Medicare · 42% in Medicare Advantage · 15 Advantage plans with drug coverage
Shannon County1,974 with Medicare · 59% in Medicare Advantage · 16 Advantage plans with drug coverage
Shelby County1,718 with Medicare · 27% in Medicare Advantage · 11 Advantage plans with drug coverage
St. Charles County87,446 with Medicare · 61% in Medicare Advantage · 38 Advantage plans with drug coverage
St. Clair County2,768 with Medicare · 54% in Medicare Advantage · 17 Advantage plans with drug coverage
St. Francois County16,523 with Medicare · 58% in Medicare Advantage · 23 Advantage plans with drug coverage
St. Louis city48,419 with Medicare · 65% in Medicare Advantage · 38 Advantage plans with drug coverage
St. Louis County228,591 with Medicare · 57% in Medicare Advantage · 38 Advantage plans with drug coverage
Ste. Genevieve County4,820 with Medicare · 60% in Medicare Advantage · 16 Advantage plans with drug coverage
Stoddard County7,665 with Medicare · 42% in Medicare Advantage · 17 Advantage plans with drug coverage
Stone County11,223 with Medicare · 60% in Medicare Advantage · 29 Advantage plans with drug coverage
Sullivan County1,628 with Medicare · 32% in Medicare Advantage · 18 Advantage plans with drug coverage
Taney County16,105 with Medicare · 61% in Medicare Advantage · 29 Advantage plans with drug coverage
Texas County6,645 with Medicare · 48% in Medicare Advantage · 18 Advantage plans with drug coverage
Vernon County4,682 with Medicare · 51% in Medicare Advantage · 17 Advantage plans with drug coverage
Warren County9,097 with Medicare · 69% in Medicare Advantage · 37 Advantage plans with drug coverage
Washington County5,712 with Medicare · 66% in Medicare Advantage · 37 Advantage plans with drug coverage
Wayne County3,581 with Medicare · 53% in Medicare Advantage · 10 Advantage plans with drug coverage
Webster County9,089 with Medicare · 68% in Medicare Advantage · 29 Advantage plans with drug coverage
Worth County578 with Medicare · 29% in Medicare Advantage · 12 Advantage plans with drug coverage
Wright County5,364 with Medicare · 65% in Medicare Advantage · 25 Advantage plans with drug coverage

Sources: CMS Medicare Monthly Enrollment, July 2026, and the CMS 2027 plan landscape. Medicare Advantage here includes other Medicare health plans, such as cost plans and PACE. Before you meet any agent, check their Missouri license.

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Most people with Medicare

All 115 counties, A to Z

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