RANKING · 2024 ACS · 14 SHOWN OF 14

Highest uninsured rate, Massachusetts counties

Massachusetts counties ranked by the share of residents without health insurance (2024 ACS). This list covers the 14 counties in Massachusetts that qualify, ranked against each other statewide. The median across all 14 is 2.5%. Biggest climber in the top 100 since 2020: Bristol County, MA, up 5 places to #2.

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SAME RANKING BYCities States Metros ZIP codes

RELATEDLargest foreign-born population Most residents with a disability Largest veteran population Most uninsured people Largest senior population Most unmarried people

RANKPLACESTATEPOPUNINSUREDVS 2020

01Nantucket County, MAMA14,7587.8%+1.9 pts

02▲5Bristol County, MAMA593,6403.3%+0.4 pts

03Suffolk County, MAMA791,8913.1%−0.7 pts

04▲2Hampden County, MAMA464,3383.0%0.0 pts

05Essex County, MAMA826,6532.8%−0.2 pts

06▼2Barnstable County, MAMA233,5392.7%−0.4 pts

07▲5Plymouth County, MAMA546,8292.5%+0.1 pts

08▲5Worcester County, MAMA888,5022.5%+0.2 pts

09Middlesex County, MAMA1,669,9792.4%−0.2 pts

10▼8Dukes County, MAMA21,2192.1%−3.5 pts

11▼1Franklin County, MAMA70,6982.1%−0.3 pts

12▲2Norfolk County, MAMA739,7491.9%+0.1 pts

13▼5Berkshire County, MAMA128,2241.7%−0.9 pts

14▼3Hampshire County, MAMA164,0651.7%−0.7 pts

SHOWING 1–14 OF 14

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES