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CMS Medicare enrollment · April 2026

South Dakota 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
205.6K

205,601

Original Medicare
132.2K

132,178 beneficiaries

MA & Other share
35.7%

CMS combined delivery-system measure

Part D coverage
76.3%

156,937 beneficiaries

County enrollment

67 CMS county rows for South Dakota. Unavailable values remain marked as not reported rather than estimated.

CountyTotalOriginal MedicareMA & OtherMA & Other sharePart D share
Aurora County65943622333.8%80.1%
Beadle County4,0312,3241,70742.3%81.3%
Bennett County5194655410.4%62.6%
Bon Homme County1,6921,09859435.1%79.7%
Brookings County6,0343,3672,66744.2%82.5%
Brown County8,6276,1582,46928.6%80.2%
Brule County1,27589937629.5%79.2%
Buffalo County209191188.6%50.7%
Butte County2,8091,6681,14140.6%72.9%
Campbell County43731112628.8%81.7%
Charles Mix County1,9551,46449125.1%76.5%
Clark County89643845851.1%84.7%
Clay County2,3031,53377033.4%81.6%
Codington County6,7263,4653,26148.5%80.9%
Corson County59646613021.8%66.3%
Custer County3,6482,5471,10130.2%72%
Davison County4,8602,9961,86438.4%81.2%
Day County1,6711,08458735.1%79.2%
Deuel County1,04957847144.9%80.7%
Dewey County9098139610.6%52.1%
Douglas County81757624129.5%82.4%
Edmunds County96771125626.5%85.3%
Fall River County2,9812,21976225.6%66.3%
Faulk County59944815125.2%83.5%
Grant County2,1569971,15953.8%84.3%
Gregory County1,22798024720.1%81.3%
Haakon County5995069315.5%78.6%
Hamlin County1,25868657245.5%81.6%
Hand County90476613815.3%81.9%
Hanson County1,04864939938.1%77.5%
Harding County3072505718.6%74.9%
Hughes County3,8283,03779120.7%76.3%
Hutchinson County1,9051,18072538.1%80.5%
Hyde County35924911030.6%79.7%
Jackson County48736911824.2%64.5%
Jerauld County59042716327.6%80.2%
Jones County2582193915.1%74.8%
Kingsbury County1,5681,06949931.8%80.9%
Lake County2,8761,89997734%81.8%
Lawrence County8,4735,4083,06536.2%75%
Lincoln County12,5667,0455,52143.9%79.9%
Lyman County73459114319.5%68.9%
Marshall County1,18378739633.5%80%
Mccook County1,40078861243.7%80.4%
Mcpherson County70452817625%82.2%
Meade County6,6694,5092,16032.4%67.7%
Mellette County3623006217.1%66.9%
Miner County64744020732%82.5%
Minnehaha County40,91723,17417,74343.4%77.6%
Moody County1,44697147532.8%76.4%
Oglala Lakota County1,4231,352715%45.5%
Pennington County30,16520,5609,60531.8%69.2%
Perkins County87467320123%77.6%
Potter County70259710515%80.6%
Roberts County2,2281,47275633.9%72.8%
Sanborn County61440421034.2%81.3%
Spink County1,6611,21244927%83.9%
Stanley County80163316821%72.7%
Sully County3522866618.8%77.3%
Todd County984919656.6%53.5%
Tripp County1,3981,16423416.7%79.7%
Turner County2,0921,0361,05650.5%82.3%
Union County3,9002,6091,29133.1%78.7%
UnknownNot reportedNot reportedNot reportedNot reportedNot reported
Walworth County1,5221,19732521.4%76.5%
Yankton County5,9443,8172,12735.8%81.9%
Ziebach County2011683316.4%57.2%

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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