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. The median across all 14 is +2.1%. Biggest climber in the top 100 since 2020: Worcester County, MA, up 5 places to #2.

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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

02▲5Worcester County, MAMA888,502+3.1%−2.8 pts

03▲5Plymouth County, MAMA546,829+3.0%−5.6 pts

04▼2Dukes County, MAMA21,219+3.0%−25.8 pts

05▲5Bristol County, MAMA593,640+2.5%−3.1 pts

06▼1Middlesex County, MAMA1,669,979+2.3%−2.5 pts

07▼3Essex County, MAMA826,653+2.1%−5.9 pts

08▲1Barnstable County, MAMA233,539+2.0%−17.1 pts

09▼3Norfolk County, MAMA739,749+1.9%−3.7 pts

10▲1Hampshire County, MAMA164,065+1.1%−2.8 pts

11▲1Hampden County, MAMA464,338-0.3%−0.3 pts

12▲1Franklin County, MAMA70,698-0.5%−2.5 pts

13▲1Berkshire County, MAMA128,224-0.6%+2.5 pts

14▼11Suffolk County, MAMA791,891-0.8%−4.7 pts

SHOWING 1–14 OF 14

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU POPULATION ESTIMATES