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.

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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

YEAR2020 2024

RANKPLACESTATEPOPUNINSUREDVS 2020

01Nantucket County, MAMA14,7587.8%+1.9 pts

02Bristol County, MAMA593,6403.3%+0.4 pts

03Suffolk County, MAMA791,8913.1%−0.7 pts

04Hampden County, MAMA464,3383.0%+0.0 pts

05Essex County, MAMA826,6532.8%−0.2 pts

06Barnstable County, MAMA233,5392.7%−0.4 pts

07Plymouth County, MAMA546,8292.5%+0.1 pts

08Worcester County, MAMA888,5022.5%+0.2 pts

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

10Dukes County, MAMA21,2192.1%−3.5 pts

11Franklin County, MAMA70,6982.1%−0.3 pts

12Norfolk County, MAMA739,7491.9%+0.1 pts

13Berkshire County, MAMA128,2241.7%−0.9 pts

14Hampshire County, MAMA164,0651.7%−0.7 pts

SHOWING 1–14 OF 14

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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES