Health insurance in Merrimack County, New Hampshire
4 insurers sell 46 marketplace plans here, and 6.6% 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 Merrimack County, offering 46 plans between them, roughly 12 each. It gained 3 since the previous plan year, up from 1.
How many people here have no coverage
6.6% of Merrimack County's 119,447 under-65 residents have no health coverage — 7,877 people. That is close to the New Hampshire rate of 5.5%, and puts Merrimack County in the bottom quarter of the 1,817 counties on this site (1618th).
How much the marketplace is used
6,832 Merrimack County residents selected a marketplace plan for 2026: 57 per thousand under-65 residents, 1465th of 1,817. That is under the 78 per thousand typical of published counties. 1,146 of them — 17% — were new rather than renewing.
Merrimack County against New Hampshire
Merrimack County is the 3rd largest of the 4 New Hampshire counties we publish. Its uninsured rate runs 1.1 points higher than New Hampshire overall and it carries the same 4 insurers as every other county in the state. Marketplace use is close to the New Hampshire rate.
| Merrimack County | New Hampshire | Published median | |
|---|---|---|---|
| Uninsured, under 65 | 6.6% | 5.5% | 9.9% |
| Insurers selling | 4 | 4–4 | 4 |
| Plans offered | 46 | — | 57 |
| Selections per 1,000 | 57 | 58 | 78 |
| New rather than renewing | 17% | 18% | 15% |
Counties of a similar size nearby
| County | Under 65 | Uninsured | Insurers | Plans |
|---|---|---|---|---|
| Rockwall County (Texas) | 119,286 | 11.6% | 9 | 120 |
| Randolph County (North Carolina) | 118,898 | 12.8% | 5 | 75 |
| Jackson County (Michigan) | 120,964 | 6.0% | 5 | 59 |
Rockwall County has 9 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