Health insurance in Hillsborough County, New Hampshire
4 insurers sell 46 marketplace plans here, and 5.7% 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 Hillsborough County, offering 46 plans between them, roughly 12 each. It gained 3 since the previous plan year, up from 1.
Comparatively few people go uncovered
5.7% of Hillsborough County's 347,466 under-65 residents have no health coverage — 19,945 people. That is close to the New Hampshire rate of 5.5%, and puts Hillsborough County in the bottom 10% of the 1,817 counties on this site (1745th).
How much the marketplace is used
18,386 Hillsborough County residents selected a marketplace plan for 2026: 53 per thousand under-65 residents, 1525th of 1,817. That is under the 78 per thousand typical of published counties. 3,410 of them — 19% — were new rather than renewing.
Hillsborough County against New Hampshire
Hillsborough County is the largest of the 4 New Hampshire counties we publish, by under-65 population. Its uninsured rate tracks the state almost exactly and it carries the same 4 insurers as every other county in the state. Marketplace use is close to the New Hampshire rate.
| Hillsborough County | New Hampshire | Published median | |
|---|---|---|---|
| Uninsured, under 65 | 5.7% | 5.5% | 9.9% |
| Insurers selling | 4 | 4–4 | 4 |
| Plans offered | 46 | — | 57 |
| Selections per 1,000 | 53 | 58 | 78 |
| New rather than renewing | 19% | 18% | 15% |
Counties of a similar size nearby
| County | Under 65 | Uninsured | Insurers | Plans |
|---|---|---|---|---|
| Brazoria County (Texas) | 346,973 | 15.2% | 6 | 82 |
| St. Charles County (Missouri) | 348,262 | 5.3% | 6 | 68 |
| Madison County (Alabama) | 344,068 | 8.3% | 4 | 52 |
| Charleston County (South Carolina) | 344,054 | 9.5% | 4 | 60 |
Brazoria County has 6 insurers against this county's 4 — a reminder that the county line, not the state line, is what decides your options.
All New Hampshire counties · How the credit works · Enrollment dates