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%+32%

02Bristol County, MAMA593,6403.3%+14%

03Suffolk County, MAMA791,8913.1%−18%

04Hampden County, MAMA464,3383.0%+0%

05Essex County, MAMA826,6532.8%−7%

06Barnstable County, MAMA233,5392.7%−13%

07Plymouth County, MAMA546,8292.5%+4%

08Worcester County, MAMA888,5022.5%+9%

09Middlesex County, MAMA1,669,9792.4%−8%

10Dukes County, MAMA21,2192.1%−63%

11Franklin County, MAMA70,6982.1%−12%

12Norfolk County, MAMA739,7491.9%+6%

13Berkshire County, MAMA128,2241.7%−35%

14Hampshire County, MAMA164,0651.7%−29%

SHOWING 1–14 OF 14

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES