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CMS Medicare enrollment · April 2026

Missouri Medicare Enrollment

State and county enrollment from CMS, including Original Medicare, Medicare Advantage and Other Health Plans, and Part D coverage.

Informational only. These enrollment counts do not compare plans or provide medical, financial, or enrollment advice.

Total Medicare enrollment
1.4M

1,367,263

Original Medicare
620.7K

620,677 beneficiaries

MA & Other share
54.6%

CMS combined delivery-system measure

Part D coverage
82.9%

1,132,811 beneficiaries

County enrollment

116 CMS county rows for Missouri. Unavailable values remain marked as not reported rather than estimated.

CountyTotalOriginal MedicareMA & OtherMA & Other sharePart D share
Adair County5,0213,6691,35226.9%81.1%
Andrew County3,9412,8111,13028.7%79%
Atchison County1,4491,14930020.7%81.4%
Audrain County5,8523,4352,41741.3%81.8%
Barry County9,2873,6375,65060.8%83.2%
Barton County3,0011,5561,44548.2%84.5%
Bates County4,1351,9462,18952.9%83.3%
Benton County7,5793,6253,95452.2%79%
Bollinger County2,8701,5821,28844.9%78.3%
Boone County32,33416,63315,70148.6%81%
Buchanan County19,03511,9507,08537.2%79.7%
Butler County10,8036,7454,05837.6%77.1%
Caldwell County2,2521,31493841.7%79.9%
Callaway County10,1844,6455,53954.4%80.5%
Camden County14,3837,4086,97548.5%80.8%
Cape Girardeau County18,00311,8686,13534.1%77.4%
Carroll County2,4551,48796839.4%82.4%
Carter County1,61190770443.7%77.6%
Cass County24,22511,13513,09054%80.8%
Cedar County4,1561,6902,46659.3%81.3%
Chariton County2,0551,48756827.6%83.2%
Christian County20,1517,88612,26560.9%84.3%
Clark County1,5861,19339324.8%81%
Clay County48,72825,17723,55148.3%81.8%
Clinton County5,2883,0562,23242.2%80.1%
Cole County17,2617,4879,77456.6%83%
Cooper County4,1662,1921,97447.4%81.1%
Crawford County6,0542,0803,97465.6%82.9%
Dade County2,2498321,41763%84%
Dallas County4,6971,4283,26969.6%83.7%
Daviess County1,9231,27365033.8%79.3%
Dekalb County2,1651,41974634.5%80.6%
Dent County4,1362,2851,85144.8%79.5%
Douglas County2,9077782,12973.2%83.9%
Dunklin County6,8433,7333,11045.4%83.2%
Franklin County27,6457,45720,18873%87.2%
Gasconade County4,4461,8022,64459.5%85.1%
Gentry County1,5451,18635923.2%80.3%
Greene County64,75624,63040,12662%84.6%
Grundy County2,5261,77475229.8%81.5%
Harrison County2,2861,66462227.2%80.5%
Henry County6,5483,1653,38351.7%81.8%
Hickory County2,9981,0161,98266.1%83.1%
Holt County1,21589532026.3%76.2%
Howard County2,4031,3101,09345.5%82.1%
Howell County11,4015,2536,14853.9%81.7%
Iron County3,0011,5811,42047.3%81.3%
Jackson County136,39959,35277,04756.5%82.1%
Jasper County26,99613,32813,66850.6%81.7%
Jefferson County49,76816,14533,62367.6%85.8%
Johnson County9,6195,3034,31644.9%71.8%
Knox County97275122122.7%78.6%
Laclede County9,1152,7746,34169.6%82.1%
Lafayette County8,1113,9294,18251.6%83.2%
Lawrence County8,9563,0835,87365.6%83.6%
Lewis County2,3621,63472830.8%79.1%
Lincoln County12,7784,6718,10763.4%84.4%
Linn County3,2892,2841,00530.6%80.5%
Livingston County3,5932,4701,12331.3%83.3%
Macon County4,2022,8581,34432%79.9%
Madison County3,3631,6241,73951.7%80.3%
Maries County2,0349861,04851.5%77.7%
Marion County7,0754,6382,43734.4%82%
Mcdonald County4,6221,9122,71058.6%79.5%
Mercer County83956327632.9%79.9%
Miller County5,9012,6823,21954.6%81.5%
Mississippi County2,8201,6281,19242.3%84%
Moniteau County3,1501,4571,69353.7%81.6%
Monroe County2,4291,57585435.2%81.8%
Montgomery County3,2991,5651,73452.6%83.3%
Morgan County6,1822,9633,21952.1%79.6%
New Madrid County3,8562,2051,65142.8%82.3%
Newton County12,7616,6796,08247.7%80%
Nodaway County4,3853,47291320.8%82.6%
Oregon County2,6651,2771,38852.1%81.3%
Osage County3,0141,4181,59653%85.2%
Ozark County3,0711,3431,72856.3%80.1%
Pemiscot County3,4561,6971,75950.9%84.5%
Perry County4,6983,1581,54032.8%82.1%
Pettis County9,3014,9764,32546.5%79.3%
Phelps County9,8784,9514,92749.9%76.3%
Pike County4,2022,4881,71440.8%84.3%
Platte County20,68511,6259,06043.8%80%
Polk County7,8922,7865,10664.7%84.4%
Pulaski County7,7274,2433,48445.1%56.8%
Putnam County1,28292635627.8%82.2%
Ralls County2,7151,80990633.4%79.7%
Randolph County5,6583,3372,32141%80.7%
Ray County5,1912,5172,67451.5%83.1%
Reynolds County1,65682882850%79.8%
Ripley County3,4192,0681,35139.5%75.7%
Saline County5,0382,7942,24444.5%82.6%
Schuyler County1,03873230629.5%79.6%
Scotland County98678819820.1%79.4%
Scott County9,6415,6154,02641.8%81.8%
Shannon County1,9838291,15458.2%80.6%
Shelby County1,7181,25646226.9%80.8%
St. Charles County86,82534,09052,73560.7%85.4%
St. Clair County2,7501,2651,48554%81.4%
St. Francois County16,4706,9499,52157.8%84.5%
St. Louis City48,34116,73731,60465.4%84.9%
St. Louis County227,62996,854130,77557.5%85.6%
Ste. Genevieve County4,7661,9362,83059.4%86.2%
Stoddard County7,6774,4823,19541.6%81.2%
Stone County11,0904,4256,66560.1%83.5%
Sullivan County1,5951,09150431.6%79.1%
Taney County16,1286,2009,92861.6%82%
Texas County6,6683,5073,16147.4%75%
UnknownNot reportedNot reportedNot reportedNot reportedNot reported
Vernon County4,6992,3332,36650.4%82.1%
Warren County9,0192,8076,21268.9%86.1%
Washington County5,7001,9153,78566.4%85.2%
Wayne County3,5821,6871,89552.9%79.8%
Webster County9,0302,8936,13768%84.6%
Worth County57741016728.9%78.2%
Wright County5,3711,8723,49965.1%82.4%

Source and interpretation

CMS Medicare Monthly Enrollment, April 2026, published 2026-07-23. “MA & Other” retains the official combined CMS field label.

  • CMS suppresses some small counts with an asterisk; suppressed values remain null in this snapshot.
  • Medicare Advantage and Other Health Plans is the CMS-published combined measure and is not limited to Medicare Advantage alone.
  • Enrollment counts describe a reporting month and do not compare plan benefits, provider networks, quality, or personal costs.

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