Health insurance in Idaho
Idaho runs its own marketplace with its own calendar — enrollment closes December 15, 2026, not the federal date. 98,673 uninsured residents here earn in the subsidy range.
Source: US Census Small Area Health Insurance Estimates, 2024 release.
Who is uninsured in Idaho
178,927 people under 65 in Idaho have no health coverage — 11.1% of the under-65 population, 15th highest of the 51 states and DC. Of those, 98,673 earn inside the premium tax credit range — 55% of the state's uninsured.
47,993 uninsured Idaho residents (27% of the total) earn under $22,025. Idaho expanded Medicaid, so that group mostly qualifies for it instead — and it enrolls year-round.
Where Idaho residents enroll, and by when
Idaho does not use HealthCare.gov. It runs Your Health Idaho at yourhealthidaho.org, and sets its own enrollment dates — which are not always the federal ones. Applying at HealthCare.gov will redirect you.
Open Enrollment for Idaho: October 15, 2026 to December 15, 2026.
Checked 2026-09-01. 2027 dates moved nationally after a court ruling — what changed and why.
How enrollment works · If you missed the window
The 5 largest counties in Idaho
By under-65 population — 62% of Idaho's under-65 residents, from 44 counties with published estimates.
| County | Under 65 | Uninsured | In subsidy range | Share | Uninsured 50–64 |
|---|---|---|---|---|---|
| Ada County | 440,922 | 8.1% | 19,172 | 54% | 7.0% |
| Canyon County | 225,574 | 14.3% | 18,540 | 57% | 12.2% |
| Kootenai County | 150,128 | 10.1% | 8,398 | 55% | 8.0% |
| Bonneville County | 113,692 | 9.7% | 6,406 | 58% | 8.8% |
| Twin Falls County | 79,056 | 12.9% | 5,665 | 56% | 11.0% |
Source: US Census Small Area Health Insurance Estimates, 2024 release. "In subsidy range" counts uninsured under-65 residents earning 138–400% of the federal poverty level.