RANKING · 2020 CENSUS · 14 SHOWN OF 14

Most uninsured people, Massachusetts counties · 2020

Massachusetts counties with the most residents lacking health insurance, as of the 2020 American Community Survey. Ranked by number of people, not the uninsured rate. This list covers the 14 counties in Massachusetts that qualify, ranked against each other statewide. The median across all 14 is 12,794.

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SAME RANKING BYCities States Metros

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

RANKPLACESTATEPOPUNINSURED RESIDENTSVS –

01Middlesex County, MAMA1,669,97941,461–

02Suffolk County, MAMA791,89129,883–

03Essex County, MAMA826,65323,282–

04Worcester County, MAMA888,50219,087–

05Bristol County, MAMA593,64015,965–

06Hampden County, MAMA464,33814,026–

07Norfolk County, MAMA739,74912,794–

08Plymouth County, MAMA546,82912,231–

09Barnstable County, MAMA233,5396,615–

10Hampshire County, MAMA164,0653,874–

11Berkshire County, MAMA128,2243,180–

12Franklin County, MAMA70,6981,658–

13Dukes County, MAMA21,219971–

14Nantucket County, MAMA14,758660–

SHOWING 1–14 OF 14

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS