Health insurance in Rock County, Wisconsin
2 insurers sell 24 marketplace plans here, and 6.5% 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.
Two insurers, and what that means
Two insurers sell here, offering 24 plans between them. If either leaves, Rock County becomes a single-insurer county. The number has not changed since the previous plan year.
How many people here have no coverage
6.5% of Rock County's 133,448 under-65 residents have no health coverage — 8,727 people. That is close to the Wisconsin rate of 6.4%, and puts Rock County in the bottom quarter of the 1,817 counties on this site (1632nd).
How much the marketplace is used
7,376 Rock County residents selected a marketplace plan for 2026: 55 per thousand under-65 residents, 1492nd of 1,817. That is under the 78 per thousand typical of published counties. 974 of them — 13% — were new rather than renewing.
Rock County against Wisconsin
Rock County is the 7th largest of the 12 Wisconsin counties we publish. Its uninsured rate tracks the state almost exactly and its 2 insurers sit between the state's 1 and 5. Marketplace use is close to the Wisconsin rate.
| Rock County | Wisconsin | Published median | |
|---|---|---|---|
| Uninsured, under 65 | 6.5% | 6.4% | 9.9% |
| Insurers selling | 2 | 1–5 | 4 |
| Plans offered | 24 | — | 57 |
| Selections per 1,000 | 55 | 62 | 78 |
| New rather than renewing | 13% | 14% | 15% |
Counties of a similar size nearby
| County | Under 65 | Uninsured | Insurers | Plans |
|---|---|---|---|---|
| Marathon County | 110,447 | 6.4% | 4 | 46 |
| Washington County | 109,569 | 4.6% | 4 | 53 |
Marathon County has 4 insurers against this county's 2 — a reminder that the county line, not the state line, is what decides your options.
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