RANKING · 2020 CENSUS · 21 SHOWN OF 21

Largest households, New Jersey counties · 2020

New Jersey counties ranked by average household size (2020 ACS). This list covers the 21 counties in New Jersey that qualify, ranked against each other statewide.

New JerseyAll states All rankings

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, NJNJ531,6242.93−2%

02Union County, NJNJ601,8632.86+1%

03Middlesex County, NJNJ883,3352.77−0%

04Somerset County, NJNJ356,4862.72−1%

05Gloucester County, NJNJ312,6382.70−1%

06Bergen County, NJNJ977,0262.69+2%

07Cumberland County, NJNJ157,1482.69−5%

08Essex County, NJNJ896,3792.67−3%

09Mercer County, NJNJ399,2892.67−1%

10Morris County, NJNJ524,2512.63−2%

11Camden County, NJNJ535,7992.62−1%

12Ocean County, NJNJ673,7462.59+2%

13Burlington County, NJNJ481,4392.58−2%

14Monmouth County, NJNJ651,0352.58−3%

15Sussex County, NJNJ148,0632.57−3%

16Atlantic County, NJNJ278,6572.56+0%

17Hunterdon County, NJNJ131,7812.54−3%

18Hudson County, NJNJ735,0332.54−2%

19Salem County, NJNJ66,2802.50−3%

20Warren County, NJNJ112,9532.45−5%

21Cape May County, NJNJ93,3902.22+6%

SHOWING 1–21 OF 21

Download CSV (full list, 21 rows)

UPDATED 2026-08-08 · DATA: US CENSUS BUREAU DECENNIAL CENSUS