RANKING · 2010 CENSUS · 21 SHOWN OF 21

Fastest growing, New Jersey counties · 2010

New Jersey counties ranked by population growth from the 2000 census to 2010. 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

01Gloucester County, NJNJ312,638+13.2%+23%

02Ocean County, NJNJ673,746+12.8%−28%

03Somerset County, NJNJ356,486+8.7%−63%

04Atlantic County, NJNJ278,657+8.7%−31%

05Middlesex County, NJNJ883,335+8.0%−32%

06Cumberland County, NJNJ157,148+7.1%+18%

07Warren County, NJNJ112,953+6.1%−48%

08Burlington County, NJNJ481,439+6.0%−17%

09Hunterdon County, NJNJ131,781+5.2%−60%

10Morris County, NJNJ524,251+4.7%−60%

11Mercer County, NJNJ399,289+4.5%−41%

12Hudson County, NJNJ735,033+4.2%−59%

13Sussex County, NJNJ148,063+3.5%−65%

14Salem County, NJNJ66,280+2.8%−281%

15Union County, NJNJ601,863+2.7%−54%

16Passaic County, NJNJ531,624+2.5%−69%

17Monmouth County, NJNJ651,035+2.5%−78%

18Bergen County, NJNJ977,026+2.4%−67%

19Camden County, NJNJ535,799+0.9%−24%

20Essex County, NJNJ896,379-1.2%−161%

21Cape May County, NJNJ93,390-4.9%−165%

SHOWING 1–21 OF 21

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS