RANKING · 2000 CENSUS · 21 SHOWN OF 21

Most population gained, New Jersey counties · 2000

New Jersey counties that added the most residents from the 1990 census to 2000, by raw count of people rather than percentage. This list covers the 21 counties in New Jersey that qualify, ranked against each other statewide. The median across all 21 is +28,225.

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SAME RANKING BYCities States Metros

RELATEDLargest by population Fastest growing Fastest shrinking Most population lost Most densely populated Most sparsely populated

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION CHANGEVS –

01Middlesex County, NJNJ883,335+78,382–

02Ocean County, NJNJ673,746+77,713–

03Monmouth County, NJNJ651,035+62,177–

04Bergen County, NJNJ977,026+58,738–

05Somerset County, NJNJ356,486+57,211–

06Hudson County, NJNJ735,033+55,876–

07Morris County, NJNJ524,251+48,859–

08Passaic County, NJNJ531,624+35,989–

09Union County, NJNJ601,863+28,722–

10Burlington County, NJNJ481,439+28,328–

11Atlantic County, NJNJ278,657+28,225–

12Mercer County, NJNJ399,289+24,937–

13Gloucester County, NJNJ312,638+24,591–

14Essex County, NJNJ896,379+15,427–

15Hunterdon County, NJNJ131,781+14,213–

16Sussex County, NJNJ148,063+13,223–

17Warren County, NJNJ112,953+10,830–

18Cumberland County, NJNJ157,148+8,385–

19Cape May County, NJNJ93,390+7,237–

20Camden County, NJNJ535,799+6,108–

21Salem County, NJNJ66,280-1,009–

SHOWING 1–21 OF 21

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS