RANKING · 2010 CENSUS · 21 SHOWN OF 21

Fastest shrinking, New Jersey counties · 2010

New Jersey counties with the steepest population decline since the prior decennial census. This list covers the 21 counties in New Jersey that qualify, ranked against each other statewide.

Flip the list · Fastest growing, US counties →

New JerseyAll states All rankings

SAME RANKING BYCities States Metros

YEAR2000 2010 2020

RANKPLACESTATEPOPPOPULATION GROWTHVS 2000

01Cape May County, NJNJ93,390-4.9%−165%

02Essex County, NJNJ896,379-1.2%−161%

03Camden County, NJNJ535,799+0.9%−24%

04Bergen County, NJNJ977,026+2.4%−67%

05Monmouth County, NJNJ651,035+2.5%−78%

06Passaic County, NJNJ531,624+2.5%−69%

07Union County, NJNJ601,863+2.7%−54%

08Salem County, NJNJ66,280+2.8%−281%

09Sussex County, NJNJ148,063+3.5%−65%

10Hudson County, NJNJ735,033+4.2%−59%

11Mercer County, NJNJ399,289+4.5%−41%

12Morris County, NJNJ524,251+4.7%−60%

13Hunterdon County, NJNJ131,781+5.2%−60%

14Burlington County, NJNJ481,439+6.0%−17%

15Warren County, NJNJ112,953+6.1%−48%

16Cumberland County, NJNJ157,148+7.1%+18%

17Middlesex County, NJNJ883,335+8.0%−32%

18Atlantic County, NJNJ278,657+8.7%−31%

19Somerset County, NJNJ356,486+8.7%−63%

20Ocean County, NJNJ673,746+12.8%−28%

21Gloucester County, NJNJ312,638+13.2%+23%

SHOWING 1–21 OF 21

Download CSV (full list, 21 rows)

UPDATED 2026-06-02 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES