RANKING · 2000 CENSUS · 14 SHOWN OF 14

Most densely populated, Massachusetts counties · 2000

Massachusetts counties ranked by residents per square mile (2000). This list covers the 14 counties in Massachusetts that qualify, ranked against each other statewide. The median across all 14 is 718.

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SAME RANKING BYCities States Metros

YEAR1990 2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION DENSITYVS 1990

01Suffolk County, MAMA791,89111,842+4%

02Middlesex County, MAMA1,669,9791,792+5%

03Norfolk County, MAMA739,7491,642+6%

04Essex County, MAMA826,6531,469+8%

05Bristol County, MAMA593,640967+6%

06Hampden County, MAMA464,3387390%

07Plymouth County, MAMA546,829718+9%

08Barnstable County, MAMA233,539564+19%

09Worcester County, MAMA888,502497+6%

10Hampshire County, MAMA164,065289+4%

11Nantucket County, MAMA14,758206+58%

12Berkshire County, MAMA128,224146−3%

13Dukes County, MAMA21,219145+29%

14Franklin County, MAMA70,698102+2%

SHOWING 1–14 OF 14

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