Medicare in South Dakota by county

Most people with Medicare

Across South Dakota, 206,990 people had Medicare in July 2026, 36% of them in Medicare Advantage or another Medicare health plan. The counties with the most:

1. Minnehaha County 41,159 with Medicare · 43% in Medicare Advantage · 6 Advantage plans with drug coverage
2. Pennington County 30,315 with Medicare · 32% in Medicare Advantage · 3 Advantage plans with drug coverage
3. Lincoln County 12,801 with Medicare · 44% in Medicare Advantage · 6 Advantage plans with drug coverage
4. Brown County 8,673 with Medicare · 29% in Medicare Advantage · 0 Advantage plans with drug coverage
5. Lawrence County 8,574 with Medicare · 36% in Medicare Advantage · 3 Advantage plans with drug coverage
6. Codington County 6,773 with Medicare · 48% in Medicare Advantage · 3 Advantage plans with drug coverage
7. Meade County 6,740 with Medicare · 32% in Medicare Advantage · 3 Advantage plans with drug coverage
8. Brookings County 6,098 with Medicare · 44% in Medicare Advantage · 9 Advantage plans with drug coverage
9. Yankton County 5,980 with Medicare · 36% in Medicare Advantage · 4 Advantage plans with drug coverage
10. Davison County 4,903 with Medicare · 38% in Medicare Advantage · 3 Advantage plans with drug coverage

All 66 counties, A to Z

• Aurora County656 with Medicare · 33% in Medicare Advantage · 0 Advantage plans with drug coverage
• Beadle County4,049 with Medicare · 43% in Medicare Advantage · 0 Advantage plans with drug coverage
• Bennett County521 with Medicare · 10% in Medicare Advantage · 0 Advantage plans with drug coverage
• Bon Homme County1,684 with Medicare · 35% in Medicare Advantage · 0 Advantage plans with drug coverage
• Brookings County6,098 with Medicare · 44% in Medicare Advantage · 9 Advantage plans with drug coverage
• Brown County8,673 with Medicare · 29% in Medicare Advantage · 0 Advantage plans with drug coverage
• Brule County1,273 with Medicare · 29% in Medicare Advantage · 0 Advantage plans with drug coverage
• Buffalo County212 with Medicare · 9% in Medicare Advantage · 0 Advantage plans with drug coverage
• Butte County2,825 with Medicare · 40% in Medicare Advantage · 3 Advantage plans with drug coverage
• Campbell County437 with Medicare · 29% in Medicare Advantage · 3 Advantage plans with drug coverage
• Charles Mix County1,968 with Medicare · 25% in Medicare Advantage · 0 Advantage plans with drug coverage
• Clark County906 with Medicare · 51% in Medicare Advantage · 5 Advantage plans with drug coverage
• Clay County2,310 with Medicare · 34% in Medicare Advantage · 6 Advantage plans with drug coverage
• Codington County6,773 with Medicare · 48% in Medicare Advantage · 3 Advantage plans with drug coverage
• Corson County598 with Medicare · 22% in Medicare Advantage · 3 Advantage plans with drug coverage
• Custer County3,699 with Medicare · 30% in Medicare Advantage · 3 Advantage plans with drug coverage
• Davison County4,903 with Medicare · 38% in Medicare Advantage · 3 Advantage plans with drug coverage
• Day County1,664 with Medicare · 35% in Medicare Advantage · 5 Advantage plans with drug coverage
• Deuel County1,058 with Medicare · 45% in Medicare Advantage · 5 Advantage plans with drug coverage
• Dewey County913 with Medicare · 11% in Medicare Advantage · 3 Advantage plans with drug coverage
• Douglas County822 with Medicare · 29% in Medicare Advantage · 2 Advantage plans with drug coverage
• Edmunds County977 with Medicare · 27% in Medicare Advantage · 0 Advantage plans with drug coverage
• Fall River County3,001 with Medicare · 26% in Medicare Advantage · 3 Advantage plans with drug coverage
• Faulk County598 with Medicare · 25% in Medicare Advantage · 0 Advantage plans with drug coverage
• Grant County2,155 with Medicare · 53% in Medicare Advantage · 0 Advantage plans with drug coverage
• Gregory County1,232 with Medicare · 20% in Medicare Advantage · 0 Advantage plans with drug coverage
• Haakon County601 with Medicare · 15% in Medicare Advantage · 3 Advantage plans with drug coverage
• Hamlin County1,266 with Medicare · 45% in Medicare Advantage · 3 Advantage plans with drug coverage
• Hand County902 with Medicare · 15% in Medicare Advantage · 0 Advantage plans with drug coverage
• Hanson County1,044 with Medicare · 38% in Medicare Advantage · 2 Advantage plans with drug coverage
• Harding County313 with Medicare · 18% in Medicare Advantage · 3 Advantage plans with drug coverage
• Hughes County3,839 with Medicare · 21% in Medicare Advantage · 0 Advantage plans with drug coverage
• Hutchinson County1,917 with Medicare · 38% in Medicare Advantage · 2 Advantage plans with drug coverage
• Hyde County366 with Medicare · 31% in Medicare Advantage · 0 Advantage plans with drug coverage
• Jackson County491 with Medicare · 24% in Medicare Advantage · 3 Advantage plans with drug coverage
• Jerauld County589 with Medicare · 27% in Medicare Advantage · 0 Advantage plans with drug coverage
• Jones County258 with Medicare · 16% in Medicare Advantage · 0 Advantage plans with drug coverage
• Kingsbury County1,584 with Medicare · 31% in Medicare Advantage · 5 Advantage plans with drug coverage
• Lake County2,908 with Medicare · 34% in Medicare Advantage · 6 Advantage plans with drug coverage
• Lawrence County8,574 with Medicare · 36% in Medicare Advantage · 3 Advantage plans with drug coverage
• Lincoln County12,801 with Medicare · 44% in Medicare Advantage · 6 Advantage plans with drug coverage
• Lyman County738 with Medicare · 19% in Medicare Advantage · 0 Advantage plans with drug coverage
• Marshall County1,183 with Medicare · 33% in Medicare Advantage · 5 Advantage plans with drug coverage
• McCook County1,393 with Medicare · 44% in Medicare Advantage · 6 Advantage plans with drug coverage
• McPherson County703 with Medicare · 25% in Medicare Advantage · 0 Advantage plans with drug coverage
• Meade County6,740 with Medicare · 32% in Medicare Advantage · 3 Advantage plans with drug coverage
• Mellette County361 with Medicare · 17% in Medicare Advantage · 0 Advantage plans with drug coverage
• Miner County647 with Medicare · 33% in Medicare Advantage · 2 Advantage plans with drug coverage
• Minnehaha County41,159 with Medicare · 43% in Medicare Advantage · 6 Advantage plans with drug coverage
• Moody County1,462 with Medicare · 33% in Medicare Advantage · 6 Advantage plans with drug coverage
• Oglala Lakota County1,431 with Medicare · 5% in Medicare Advantage · 0 Advantage plans with drug coverage
• Pennington County30,315 with Medicare · 32% in Medicare Advantage · 3 Advantage plans with drug coverage
• Perkins County875 with Medicare · 23% in Medicare Advantage · 3 Advantage plans with drug coverage
• Potter County709 with Medicare · 15% in Medicare Advantage · 0 Advantage plans with drug coverage
• Roberts County2,229 with Medicare · 34% in Medicare Advantage · 5 Advantage plans with drug coverage
• Sanborn County617 with Medicare · 34% in Medicare Advantage · 5 Advantage plans with drug coverage
• Spink County1,663 with Medicare · 27% in Medicare Advantage · 3 Advantage plans with drug coverage
• Stanley County810 with Medicare · 21% in Medicare Advantage · 0 Advantage plans with drug coverage
• Sully County359 with Medicare · 19% in Medicare Advantage · 0 Advantage plans with drug coverage
• Todd County995 with Medicare · 6% in Medicare Advantage · 0 Advantage plans with drug coverage
• Tripp County1,399 with Medicare · 16% in Medicare Advantage · 0 Advantage plans with drug coverage
• Turner County2,109 with Medicare · 50% in Medicare Advantage · 6 Advantage plans with drug coverage
• Union County3,929 with Medicare · 33% in Medicare Advantage · 4 Advantage plans with drug coverage
• Walworth County1,523 with Medicare · 22% in Medicare Advantage · 3 Advantage plans with drug coverage
• Yankton County5,980 with Medicare · 36% in Medicare Advantage · 4 Advantage plans with drug coverage
• Ziebach County203 with Medicare · 17% in Medicare Advantage · 3 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 South Dakota license.

Keep reading

• How to find a good Medicare agent near youWhere to look for a local Medicare agent, how to narrow the list to one or two, and the five-minute checks to do before you share anything.
• Medicare Open Enrollment checklist: what to check before December 7A step-by-step checklist for the October 15 to December 7, 2026 Open Enrollment Period: what to read in your plan's letter, what's changing for 2027, what you can switch, and what happens if you do nothing.
• Moving to another state with Medicare: what changes and what to doOriginal Medicare moves with you; most Medicare Advantage and drug plans don't. What happens to each kind of coverage when you move, your window to switch, and why your agent must be licensed in your new state.