RANKING · 2010 CENSUS · 14 SHOWN OF 14

Most population gained, Massachusetts counties · 2010

Massachusetts counties that added the most residents from the 2000 census to 2010, by raw count of people rather than percentage. This list covers the 14 counties in Massachusetts that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION CHANGEVS 2000

01Worcester County, MAMA888,502+47,589+15%

02Middlesex County, MAMA1,669,979+37,689−44%

03Suffolk County, MAMA791,891+32,216+24%

04Plymouth County, MAMA546,829+22,097−41%

05Norfolk County, MAMA739,749+20,542−40%

06Essex County, MAMA826,653+19,740−63%

07Bristol County, MAMA593,640+13,607−52%

08Hampden County, MAMA464,338+7,262−8956%

09Hampshire County, MAMA164,065+5,829+3%

10Dukes County, MAMA21,219+1,548−54%

11Nantucket County, MAMA14,758+652−81%

12Franklin County, MAMA70,698-163−111%

13Berkshire County, MAMA128,224-3,734−15%

14Barnstable County, MAMA233,539-6,342−118%

SHOWING 1–14 OF 14

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