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Health insurance in Sonoma County, California

11,808 people here have no coverage and earn in the range a premium tax credit is built for — 53% of everyone uninsured in the county.

Reviewed September 4, 2026 · 2024 Census data

11,808Uninsured, subsidy range 138–400% of poverty
6.0%Uninsured, under 65 22,443 people
4.2%Uninsured, 50 to 64 3,924 people
374,101Under-65 residents 158th of 3,143

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 22,443 people without coverage in Sonoma County, 11,808 — 53% — earn inside the premium tax credit range. That is near the 51% national median. Within that band itself, 8.9% have no coverage.

How many people here have no coverage

6.0% of Sonoma County's 374,101 under-65 residents have no health coverage — 22,443 people. That is close to the California rate of 6.9%, and puts Sonoma County in the bottom quarter of the 3,143 counties measured nationally (2,793rd).

Relatively few are under the Medicaid line

4,861 of Sonoma County's uninsured — 22%, below the 31% typical of counties nationally — earn under $22,025 a year, which in California is Medicaid territory rather than marketplace territory.

The years before Medicare

3,924 people aged 50 to 64 in Sonoma County have no coverage, a rate of 4.2% — close to the 6.0% across all under-65 residents here. Age-rated premiums make this the most expensive group to cover before Medicare.

Sonoma County against California

Sonoma County is the 17th largest of the 34 California counties we publish. Its uninsured rate runs 0.9 points lower than California overall and its subsidy-band share matches the state. Coverage among 50 to 64 year olds is better here than across California.

Sonoma CountyCalifornia National median
Uninsured, under 656.0% 6.9%9.8%
Uninsured in the subsidy band11,808 1,173,956—
Subsidy band as a share of uninsured53% 52% 51%
At or below 138% of poverty22% 25% 31%
Uninsured, 50 to 644.2% 6.6% 8.1%

Counties of a similar size

CountyUninsured In the subsidy bandShare
Solano County5.4%9,85050%
Santa Barbara County8.7%15,69551%
Monterey County9.3%18,31156%
Placer County3.7%5,94247%

What a plan actually costs in Sonoma County

These figures say how many people here a credit would reach. What it would be worth to you depends on your age, household and income — a licensed agent can work that out on the call.

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