US Counties With the Lowest Adults Under 65 Without Health Insurance

2,956 US counties ranked by adults under 65 without health insurance, from lowest to highest. First are Norfolk County, MA (4%), Barnstable County, MA (4.1%) and Middlesex County, MA (4.1%). The middle one of the 2,956 has 10.4%.

What this measures

The estimated percentage of adults who aged 18 to 64 have no health insurance. It is adjusted so places with older or younger populations can be compared fairly. It is an estimate from a statistical model, not a direct count from a local survey. Source: CDC PLACES.

For most measures, a national ranking mostly sorts places by income and by how urban they are. Each county’s own page compares it with the 50 counties most like it instead, which is often the fairer view.

The 100 lowest counties

More on adults under 65 without health insurance

• US Counties With the Highest Adults Under 65 Without Health Insurance
• Adults under 65 without health insurance by US county: map by year and what it goes with

A ranking describes places, not the people in them, and a high or low place does not by itself say why. All US rankings.