Health insurance in New Hampshire
50,374 New Hampshire residents bought a marketplace plan for 2026. What they were offered depended on which of the state's 5 counties they live in.
Source: CMS Marketplace Open Enrollment Public Use Files and US Census Small Area Health Insurance Estimates, 2026 release. Figures cover the under-65 population.
Where you enroll
New Hampshire uses the federally facilitated marketplace, so you enroll at HealthCare.gov on the federal calendar — the dates are here.
Medicaid covers the bottom of the range in New Hampshire
New Hampshire expanded Medicaid, so there is no coverage gap here: adults under 138% of the poverty guideline — about $22,025 for one person — go to Medicaid rather than falling between it and the subsidy.
47,674 under-65 New Hampshire residents are uninsured all the same, 5.5% of them — 46th of the 51 states and DC, and 0.6× the 26-state median of 9.9%.
Competition is uniform across New Hampshire
Every county in New Hampshire has the same number of insurers selling on the exchange: 4. That is unusual, and it means the question of where you live inside New Hampshire does not change how much competition you get.
No county in New Hampshire is down to a single insurer. Since the previous plan year, 5 counties in New Hampshire gained an insurer and none lost one.
How many New Hampshire residents buy on the marketplace
50,374 New Hampshire residents selected a marketplace plan for 2026. Against the state's under-65 population that is 58 per thousand, below the 26-state median of 79, and 21st highest of the 26 states on this site.
Of those, 9,158 — 18% — were new rather than renewing, which is an unusually high share of first-time buyers (3rd of 26).
The spread inside New Hampshire
Hillsborough County is the largest county we publish here, with 347,466 under-65 residents; Strafford County is the smallest, with 103,621. Hillsborough County has 4 insurers offering 46 plans, and Strafford County has 4 offering 46.
Uninsured rates range from 4.5% in Rockingham County to 6.6% in Merrimack County — 1.5 times as high, within one state.
The 4 largest counties in New Hampshire
By under-65 population, covering 94% of the state's under-65 residents. New Hampshire has 5 counties with complete federal data; we publish pages for the largest.
| County | Under 65 | Uninsured | Insurers | Plans | Per 1,000 |
|---|---|---|---|---|---|
| Hillsborough County | 347,466 | 5.7% | 4 | 46 | 53 |
| Rockingham County | 252,343 | 4.5% | 4 | 46 | 64 |
| Merrimack County | 119,447 | 6.6% | 4 | 46 | 57 |
| Strafford County | 103,621 | 5.3% | 4 | 46 | 54 |
Source: CMS Marketplace Open Enrollment Public Use Files and US Census Small Area Health Insurance Estimates, 2026 release. "Per 1,000" is marketplace plan selections per thousand under-65 residents.
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