Health insurance in Pennington County, South Dakota
3 insurers sell 28 marketplace plans here, and 10.5% of under-65 residents have no coverage at all.
Source: CMS Marketplace Open Enrollment Public Use Files and US Census Small Area Health Insurance Estimates, 2026 release.
Who sells here, and how much choice that gives
3 insurers sell marketplace plans in Pennington County, offering 28 plans between them, roughly 9 each. It gained 1 since the previous plan year, up from 2.
How many people here have no coverage
10.5% of Pennington County's 88,305 under-65 residents have no health coverage — 9,263 people. That is close to the South Dakota rate of 9.9%, and puts Pennington County in the middle half of the 1,817 counties on this site (968th).
How much the marketplace is used
5,778 Pennington County residents selected a marketplace plan for 2026: 65 per thousand under-65 residents, 1316th of 1,817. That is under the 78 per thousand typical of published counties. 851 of them — 15% — were new rather than renewing.
Pennington County against South Dakota
Pennington County is the 2nd largest of the 3 South Dakota counties we publish. Its uninsured rate runs 0.6 points higher than South Dakota overall and with 3 insurers it is as well served as anywhere in South Dakota. Marketplace use is close to the South Dakota rate.
| Pennington County | South Dakota | Published median | |
|---|---|---|---|
| Uninsured, under 65 | 10.5% | 9.9% | 9.9% |
| Insurers selling | 3 | 2–3 | 4 |
| Plans offered | 28 | — | 57 |
| Selections per 1,000 | 65 | 70 | 78 |
| New rather than renewing | 15% | 13% | 15% |
Counties of a similar size nearby
| County | Under 65 | Uninsured | Insurers | Plans |
|---|---|---|---|---|
| Henderson County (North Carolina) | 87,580 | 12.3% | 5 | 57 |
| Woodbury County (Iowa) | 87,572 | 9.0% | 4 | 58 |
| Miami County (Ohio) | 89,701 | 7.1% | 8 | 130 |
| Flathead County (Montana) | 90,206 | 12.1% | 3 | 39 |
Miami County has 8 insurers against this county's 3 — a reminder that the county line, not the state line, is what decides your options.
All South Dakota counties · How the credit works · Enrollment dates