RANKING · 1990 CENSUS · 14 SHOWN OF 14

Most densely populated, Massachusetts counties · 1990

Massachusetts counties ranked by residents per square mile (2023). This list covers the 14 counties in Massachusetts that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros

RELATEDLargest by population Fastest growing Fastest shrinking Most sparsely populated Best broadband access Worst broadband access

YEAR1990 2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION DENSITYVS 2000

01Suffolk County, MAMA791,89111,397−4%

02Middlesex County, MAMA1,669,9791,710−5%

03Norfolk County, MAMA739,7491,555−5%

04Essex County, MAMA826,6531,361−7%

05Bristol County, MAMA593,640915−5%

06Hampden County, MAMA464,338740+0%

07Plymouth County, MAMA546,829661−8%

08Barnstable County, MAMA233,539473−16%

09Worcester County, MAMA888,502470−5%

10Hampshire County, MAMA164,065278−4%

11Berkshire County, MAMA128,224150+3%

12Nantucket County, MAMA14,758130−37%

13Dukes County, MAMA21,219113−22%

14Franklin County, MAMA70,698100−2%

SHOWING 1–14 OF 14

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UPDATED 2026-06-02 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES