RANKING · 2000 CENSUS · 21 SHOWN OF 21

Youngest by median age, New Jersey counties · 2000

New Jersey counties with the youngest median age (2000 ACS). This list covers the 21 counties in New Jersey that qualify, ranked against each other statewide. The median across all 21 is 37.1.

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SAME RANKING BYCities States Metros ZIP codes

RELATEDLargest foreign-born population Most residents with a disability Largest veteran population Most uninsured people Largest senior population Most unmarried people

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPMEDIAN AGEVS 1990

01Hudson County, NJNJ735,03333.6+1%

02Essex County, NJNJ896,37934.7+4%

03Passaic County, NJNJ531,62434.8+4%

04Cumberland County, NJNJ157,14835.6+6%

05Middlesex County, NJNJ883,33535.7+6%

06Camden County, NJNJ535,79935.8+9%

07Mercer County, NJNJ399,28936.0+5%

08Gloucester County, NJNJ312,63836.1+11%

09Union County, NJNJ601,86336.6+2%

10Atlantic County, NJNJ278,65737.0+9%

11Burlington County, NJNJ481,43937.1+12%

12Sussex County, NJNJ148,06337.1+12%

13Somerset County, NJNJ356,48637.2+7%

14Warren County, NJNJ112,95337.6+9%

15Monmouth County, NJNJ651,03537.7+8%

16Morris County, NJNJ524,25137.8+7%

17Salem County, NJNJ66,28038.0+8%

18Hunterdon County, NJNJ131,78138.8+11%

19Bergen County, NJNJ977,02639.1+4%

20Ocean County, NJNJ673,74641.0+6%

21Cape May County, NJNJ93,39042.3+12%

SHOWING 1–21 OF 21

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