2026 ACA marketplace plans in South Dakota
South Dakota has 66 counties with 1,822 ACA marketplace plans in 2026, sourced from the CMS "PY2026 QHP Landscape, Individual Market Medical" Public Use File. The benchmark premium below is the second-lowest-cost silver plan at age 40 in each county — a derived figure computed from the landscape file, not an official published rate.
| County | Plans | Issuers | Benchmark (age 40) |
|---|---|---|---|
| Aurora | 21 | 2 | $706/mo |
| Beadle | 28 | 3 | $709/mo |
| Bennett | 28 | 3 | $774/mo |
| Bon Homme | 21 | 2 | $706/mo |
| Brookings | 28 | 3 | $709/mo |
| Brown | 41 | 2 | $537/mo |
| Brule | 21 | 2 | $706/mo |
| Buffalo | 21 | 2 | $706/mo |
| Butte | 28 | 3 | $774/mo |
| Campbell | 28 | 3 | $709/mo |
| Charles Mix | 21 | 2 | $706/mo |
| Clark | 28 | 3 | $709/mo |
| Clay | 37 | 3 | $549/mo |
| Codington | 28 | 3 | $709/mo |
| Corson | 28 | 3 | $709/mo |
| Custer | 28 | 3 | $774/mo |
| Davison | 32 | 2 | $535/mo |
| Day | 28 | 3 | $709/mo |
| Deuel | 28 | 3 | $709/mo |
| Dewey | 28 | 3 | $709/mo |
| Douglas | 21 | 2 | $706/mo |
| Edmunds | 28 | 3 | $709/mo |
| Fall River | 28 | 3 | $774/mo |
| Faulk | 28 | 3 | $709/mo |
| Grant | 28 | 3 | $709/mo |
| Gregory | 21 | 2 | $706/mo |
| Haakon | 28 | 3 | $774/mo |
| Hamlin | 28 | 3 | $709/mo |
| Hand | 21 | 2 | $706/mo |
| Hanson | 32 | 2 | $535/mo |
| Harding | 28 | 3 | $774/mo |
| Hughes | 21 | 2 | $706/mo |
| Hutchinson | 32 | 2 | $535/mo |
| Hyde | 21 | 2 | $706/mo |
| Jackson | 28 | 3 | $774/mo |
| Jerauld | 21 | 2 | $706/mo |
| Jones | 28 | 3 | $774/mo |
| Kingsbury | 28 | 3 | $709/mo |
| Lake | 28 | 3 | $675/mo |
| Lawrence | 28 | 3 | $774/mo |
| Lincoln | 41 | 2 | $514/mo |
| Lyman | 21 | 2 | $706/mo |
| Marshall | 28 | 3 | $709/mo |
| McCook | 39 | 3 | $514/mo |
| McPherson | 28 | 3 | $709/mo |
| Meade | 28 | 3 | $774/mo |
| Mellette | 28 | 3 | $774/mo |
| Miner | 21 | 2 | $706/mo |
| Minnehaha | 41 | 2 | $514/mo |
| Moody | 28 | 3 | $675/mo |
| Oglala Lakota | 28 | 3 | $774/mo |
| Pennington | 28 | 3 | $774/mo |
| Perkins | 28 | 3 | $774/mo |
| Potter | 28 | 3 | $709/mo |
| Roberts | 28 | 3 | $709/mo |
| Sanborn | 21 | 2 | $706/mo |
| Spink | 28 | 3 | $709/mo |
| Stanley | 21 | 2 | $706/mo |
| Sully | 21 | 2 | $706/mo |
| Todd | 28 | 3 | $774/mo |
| Tripp | 21 | 2 | $706/mo |
| Turner | 37 | 3 | $549/mo |
| Union | 37 | 3 | $549/mo |
| Walworth | 28 | 3 | $709/mo |
| Yankton | 32 | 2 | $535/mo |
| Ziebach | 28 | 3 | $774/mo |
Source: CMS PY2026 QHP Landscape (Individual Market Medical), released May 2026.