RANKING · 2020 CENSUS · 14 SHOWN OF 14

Fastest growing, Massachusetts counties · 2020

Massachusetts counties ranked by population growth from the 2010 census to 2020. 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 shrinking Most population gained Most population lost Most densely populated Most sparsely populated

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION GROWTHVS 2000

01Nantucket County, MAMA14,758+40.1%−18.2 pts

02Dukes County, MAMA21,219+24.6%−4.2 pts

03Suffolk County, MAMA791,891+10.5%+6.6 pts

04Essex County, MAMA826,653+9.0%+1.0 pts

05Middlesex County, MAMA1,669,979+8.6%+3.8 pts

06Norfolk County, MAMA739,749+8.2%+2.7 pts

07Worcester County, MAMA888,502+8.0%+2.1 pts

08Plymouth County, MAMA546,829+7.3%−1.4 pts

09Barnstable County, MAMA233,539+6.1%−13.0 pts

10Bristol County, MAMA593,640+5.6%+0.0 pts

11Hampshire County, MAMA164,065+2.7%−1.2 pts

12Hampden County, MAMA464,338+0.5%+0.5 pts

13Franklin County, MAMA70,698-0.5%−2.5 pts

14Berkshire County, MAMA128,224-1.7%+1.5 pts

SHOWING 1–14 OF 14

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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU DECENNIAL CENSUS