RANKING · 2025 ESTIMATES · 21 SHOWN OF 21

Fastest growing, New Jersey counties

New Jersey counties ranked by population growth from the 2020 census to 2025. This list covers the 21 counties in New Jersey 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

01Ocean County, NJNJ673,746+5.7%−12.2 pts

02Union County, NJNJ601,863+4.6%−1.2 pts

03Burlington County, NJNJ481,439+4.2%−2.9 pts

04Essex County, NJNJ896,379+3.8%+1.8 pts

05Gloucester County, NJNJ312,638+3.4%−7.3 pts

06Somerset County, NJNJ356,486+3.2%−20.6 pts

07Mercer County, NJNJ399,289+3.1%−4.6 pts

08Warren County, NJNJ112,953+3.0%−8.8 pts

09Morris County, NJNJ524,251+2.9%−8.7 pts

10Sussex County, NJNJ148,063+2.7%−7.4 pts

11Camden County, NJNJ535,799+2.4%+1.1 pts

12Middlesex County, NJNJ883,335+2.3%−9.3 pts

13Bergen County, NJNJ977,026+2.2%−4.9 pts

14Salem County, NJNJ66,280+2.2%+3.8 pts

15Hunterdon County, NJNJ131,781+2.2%−11.0 pts

16Cumberland County, NJNJ157,148+1.9%−4.1 pts

17Atlantic County, NJNJ278,657+1.5%−11.1 pts

18Passaic County, NJNJ531,624+1.4%−6.5 pts

19Hudson County, NJNJ735,033+1.4%−8.7 pts

20Monmouth County, NJNJ651,035+1.2%−10.1 pts

21Cape May County, NJNJ93,390-2.0%−9.6 pts

SHOWING 1–21 OF 21

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