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.

Flip the list · Fastest shrinking, US counties →

MassachusettsAll states All rankings

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%−31%

02Dukes County, MAMA21,219+24.6%−15%

03Suffolk County, MAMA791,891+10.5%+169%

04Essex County, MAMA826,653+9.0%+13%

05Middlesex County, MAMA1,669,979+8.6%+79%

06Norfolk County, MAMA739,749+8.2%+48%

07Worcester County, MAMA888,502+8.0%+37%

08Plymouth County, MAMA546,829+7.3%−16%

09Barnstable County, MAMA233,539+6.1%−68%

10Bristol County, MAMA593,640+5.6%+1%

11Hampshire County, MAMA164,065+2.7%−31%

12Hampden County, MAMA464,338+0.5%−2903%

13Franklin County, MAMA70,698-0.5%−123%

14Berkshire County, MAMA128,224-1.7%−47%

SHOWING 1–14 OF 14

Download CSV (full list, 14 rows)

UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS