RANKING · 2024 ACS · 21 SHOWN OF 21

Largest households, New Jersey counties

New Jersey counties ranked by average household size (2024 ACS). This list covers the 21 counties in New Jersey that qualify, ranked against each other statewide. The median across all 21 is 2.58. Biggest climber in the top 100 since 2020: Salem County, NJ, up 6 places to #13.

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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

01Passaic County, NJNJ531,6242.86−5%

02Union County, NJNJ601,8632.82−1%

03Middlesex County, NJNJ883,3352.75−1%

04▲2Bergen County, NJNJ977,0262.68+1%

05▲2Cumberland County, NJNJ157,1482.68−6%

06▼1Gloucester County, NJNJ312,6382.67−2%

07▲5Ocean County, NJNJ673,7462.65+5%

08▼4Somerset County, NJNJ356,4862.64−4%

09▼1Essex County, NJNJ896,3792.63−4%

10Morris County, NJNJ524,2512.62−3%

11▲2Burlington County, NJNJ481,4392.58−2%

12▼1Camden County, NJNJ535,7992.57−3%

13▲6Salem County, NJNJ66,2802.570%

14▼5Mercer County, NJNJ399,2892.56−5%

15▼1Monmouth County, NJNJ651,0352.54−5%

16▲1Hunterdon County, NJNJ131,7812.51−4%

17▼2Sussex County, NJNJ148,0632.50−6%

18▼2Atlantic County, NJNJ278,6572.47−3%

19▲1Warren County, NJNJ112,9532.40−7%

20▼2Hudson County, NJNJ735,0332.37−8%

21Cape May County, NJNJ93,3902.08−1%

SHOWING 1–21 OF 21

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