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%−54.8 pts

02Worcester County, MAMA888,502+3.1%−2.8 pts

03Plymouth County, MAMA546,829+3.0%−5.6 pts

04Dukes County, MAMA21,219+3.0%−25.8 pts

05Bristol County, MAMA593,640+2.5%−3.1 pts

06Middlesex County, MAMA1,669,979+2.3%−2.5 pts

07Essex County, MAMA826,653+2.1%−5.9 pts

08Barnstable County, MAMA233,539+2.0%−17.1 pts

09Norfolk County, MAMA739,749+1.9%−3.7 pts

10Hampshire County, MAMA164,065+1.1%−2.8 pts

11Hampden County, MAMA464,338-0.3%−0.3 pts

12Franklin County, MAMA70,698-0.5%−2.5 pts

13Berkshire County, MAMA128,224-0.6%+2.5 pts

14Suffolk County, MAMA791,891-0.8%−4.7 pts

SHOWING 1–14 OF 14

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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU POPULATION ESTIMATES