RANKING · 2024 ACS · 14 SHOWN OF 14

Largest households, Massachusetts counties

Massachusetts counties ranked by average household size (2024 ACS). This list covers the 14 counties in Massachusetts that qualify, ranked against each other statewide. The median across all 14 is 2.49. Biggest climber in the top 100 since 2020: Dukes County, MA, up 8 places to #1.

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SAME RANKING BYCities States Metros ZIP codes

RELATEDMost expensive homes Cheapest homes Highest median rent Lowest median rent Highest homeownership rate Highest renter share

YEAR2010 2020 2024

RANKPLACESTATEPOPAVERAGE HOUSEHOLD SIZEVS 2010

01▲8Dukes County, MAMA21,2192.73−7%

02▼1Nantucket County, MAMA14,7582.71+5%

03▼1Plymouth County, MAMA546,8292.58−3%

04▼1Essex County, MAMA826,6532.540%

05▼1Norfolk County, MAMA739,7492.510%

06▼1Worcester County, MAMA888,5022.50−2%

07▼1Middlesex County, MAMA1,669,9792.490%

08▼1Hampden County, MAMA464,3382.44−3%

09▼1Bristol County, MAMA593,6402.43−4%

10Suffolk County, MAMA791,8912.25−3%

11Hampshire County, MAMA164,0652.24−3%

12Franklin County, MAMA70,6982.20−5%

13Barnstable County, MAMA233,5392.160%

14Berkshire County, MAMA128,2242.14−5%

SHOWING 1–14 OF 14

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES