RANKING · 2010 CENSUS · 21 SHOWN OF 21

Most population gained, New Jersey counties · 2010

New Jersey counties that added the most residents from the 2000 census to 2010, by raw count of people rather than percentage. 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

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION CHANGEVS 2000

01Ocean County, NJNJ673,746+65,651−16%

02Middlesex County, NJNJ883,335+59,696−24%

03Gloucester County, NJNJ312,638+33,615+37%

04Somerset County, NJNJ356,486+25,954−55%

05Burlington County, NJNJ481,439+25,340−11%

06Hudson County, NJNJ735,033+25,291−55%

07Morris County, NJNJ524,251+22,064−55%

08Atlantic County, NJNJ278,657+21,997−22%

09Bergen County, NJNJ977,026+20,998−64%

10Mercer County, NJNJ399,289+15,752−37%

11Monmouth County, NJNJ651,035+15,079−76%

12Union County, NJNJ601,863+13,958−51%

13Passaic County, NJNJ531,624+12,177−66%

14Cumberland County, NJNJ157,148+10,460+25%

15Hunterdon County, NJNJ131,781+6,360−55%

16Warren County, NJNJ112,953+6,255−42%

17Sussex County, NJNJ148,063+5,099−61%

18Camden County, NJNJ535,799+4,725−23%

19Salem County, NJNJ66,280+1,798−278%

20Cape May County, NJNJ93,390-5,061−170%

21Essex County, NJNJ896,379-9,664−163%

SHOWING 1–21 OF 21

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