Health insurance in Ada County, Idaho

Reviewed September 4, 2026 · 2024 Census data

Source: US Census Small Area Health Insurance Estimates, 2024 release. Income bands are measured against the federal poverty level.

Half the uninsured here sit in the subsidy range

Of the 35,768 people without coverage in Ada County, 19,172 — 54% — earn inside the premium tax credit range. That is near the 51% national median. Within that band itself, 11.3% have no coverage.

How many people here have no coverage

8.1% of Ada County's 440,922 under-65 residents have no health coverage — 35,768 people. That is below the Idaho rate of 11.1%, and puts Ada County in the lower half of the 3,143 counties measured nationally (2,117th).

Who falls under the Medicaid line

8,905 of Ada County's uninsured — 25%, below the 31% typical of counties nationally — earn under $22,025 a year, which in Idaho is Medicaid territory rather than marketplace territory.

The years before Medicare

6,665 people aged 50 to 64 in Ada County have no coverage, a rate of 7.0% — close to the 8.1% across all under-65 residents here. Age-rated premiums make this the most expensive group to cover before Medicare.

Ada County against Idaho

Ada County is the largest of the 5 Idaho counties we publish, by under-65 population. Its uninsured rate runs 3.0 points lower than Idaho overall and 2 points fewer of its uninsured sit in the subsidy band than statewide. Coverage among 50 to 64 year olds is better here than across Idaho.

The next largest counties

All Idaho counties · How the credit works · Enrollment dates