Health insurance in Washtenaw County, Michigan
5 insurers sell 59 marketplace plans here, and 4.8% 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
5 insurers compete in Washtenaw County with 59 plans between them, about 12 plans each. The number has not changed since the previous plan year.
Comparatively few people go uncovered
4.8% of Washtenaw County's 294,930 under-65 residents have no health coverage — 14,198 people. That is close to the Michigan rate of 6.2%, and puts Washtenaw County in the bottom 10% of the 1,817 counties on this site (1795th).
How much the marketplace is used
14,214 Washtenaw County residents selected a marketplace plan for 2026: 48 per thousand under-65 residents, 1619th of 1,817. That is under the 78 per thousand typical of published counties. 1,994 of them — 14% — were new rather than renewing.
Washtenaw County against Michigan
Washtenaw County is the 6th largest of the 19 Michigan counties we publish. Its uninsured rate runs 1.4 points lower than Michigan overall and its 5 insurers sit between the state's 2 and 7. Marketplace use is close to the Michigan rate.
| Washtenaw County | Michigan | Published median | |
|---|---|---|---|
| Uninsured, under 65 | 4.8% | 6.2% | 9.9% |
| Insurers selling | 5 | 2–7 | 4 |
| Plans offered | 59 | — | 57 |
| Selections per 1,000 | 48 | 62 | 78 |
| New rather than renewing | 14% | 13% | 15% |
Counties of a similar size nearby
| County | Under 65 | Uninsured | Insurers | Plans |
|---|---|---|---|---|
| Genesee County | 320,188 | 6.5% | 6 | 64 |
| Ottawa County | 247,015 | 5.2% | 6 | 67 |
| Ingham County | 230,851 | 6.6% | 5 | 51 |
| Kalamazoo County | 216,062 | 5.9% | 6 | 72 |
Genesee County has 6 insurers against this county's 5 — a reminder that the county line, not the state line, is what decides your options.
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