Health insurance in Hamilton County, Indiana
4 insurers sell 56 marketplace plans here, and 4.6% 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
4 insurers sell marketplace plans in Hamilton County, offering 56 plans between them, roughly 14 each. It gained 2 since the previous plan year, up from 2.
Coverage is better here than across the state
4.6% of Hamilton County's 323,376 under-65 residents have no health coverage — 14,719 people. That is far below Indiana as a whole, which sits at 9.1% — 4.5 points better than its own state, and puts Hamilton County in the bottom 10% of the 1,817 counties on this site (1802nd).
How much the marketplace is used
21,697 Hamilton County residents selected a marketplace plan for 2026: 67 per thousand under-65 residents, 1289th of 1,817. That is close to the 78 per thousand typical of published counties. 3,280 of them — 15% — were new rather than renewing.
Hamilton County against Indiana
Hamilton County is the 3rd largest of the 12 Indiana counties we publish. Its uninsured rate runs 4.5 points lower than Indiana overall and its 4 insurers sit between the state's 3 and 5. Marketplace use is close to the Indiana rate.
| Hamilton County | Indiana | Published median | |
|---|---|---|---|
| Uninsured, under 65 | 4.6% | 9.1% | 9.9% |
| Insurers selling | 4 | 3–5 | 4 |
| Plans offered | 56 | — | 57 |
| Selections per 1,000 | 67 | 54 | 78 |
| New rather than renewing | 15% | 14% | 15% |
Counties of a similar size nearby
| County | Under 65 | Uninsured | Insurers | Plans |
|---|---|---|---|---|
| Lake County | 401,823 | 8.7% | 3 | 47 |
| St. Joseph County | 215,793 | 9.0% | 3 | 47 |
| Elkhart County | 173,285 | 13.4% | 3 | 47 |
All of them have fewer insurers than this county's 4, which makes it the stronger market locally.
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