RANKING · 2025 ESTIMATES · 14 SHOWN OF 14

Fastest growing, Massachusetts counties

Massachusetts counties ranked by population growth from the 2020 census to 2025. 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+3.5%−94%

02Worcester County, MAMA888,502+3.1%−47%

03Plymouth County, MAMA546,829+3.0%−65%

04Dukes County, MAMA21,219+3.0%−90%

05Bristol County, MAMA593,640+2.5%−55%

06Middlesex County, MAMA1,669,979+2.3%−51%

07Essex County, MAMA826,653+2.1%−74%

08Barnstable County, MAMA233,539+2.0%−90%

09Norfolk County, MAMA739,749+1.9%−66%

10Hampshire County, MAMA164,065+1.1%−72%

11Hampden County, MAMA464,338-0.3%+1676%

12Franklin County, MAMA70,698-0.5%−123%

13Berkshire County, MAMA128,224-0.6%−80%

14Suffolk County, MAMA791,891-0.8%−119%

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU POPULATION ESTIMATES