RANKING · 2020 CENSUS · 14 SHOWN OF 14

Fastest shrinking, Massachusetts counties · 2020

Massachusetts counties with the steepest population decline 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 growing, US counties →

MassachusettsAll states All rankings

SAME RANKING BYCities States Metros

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION GROWTHVS 2000

01Berkshire County, MAMA128,224-1.7%−47%

02Franklin County, MAMA70,698-0.5%−123%

03Hampden County, MAMA464,338+0.5%−2903%

04Hampshire County, MAMA164,065+2.7%−31%

05Bristol County, MAMA593,640+5.6%+1%

06Barnstable County, MAMA233,539+6.1%−68%

07Plymouth County, MAMA546,829+7.3%−16%

08Worcester County, MAMA888,502+8.0%+37%

09Norfolk County, MAMA739,749+8.2%+48%

10Middlesex County, MAMA1,669,979+8.6%+79%

11Essex County, MAMA826,653+9.0%+13%

12Suffolk County, MAMA791,891+10.5%+169%

13Dukes County, MAMA21,219+24.6%−15%

14Nantucket County, MAMA14,758+40.1%−31%

SHOWING 1–14 OF 14

Download CSV (full list, 14 rows)

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