RANKING · 2000 CENSUS · 21 SHOWN OF 21

Youngest by median age, New Jersey counties · 2000

New Jersey counties with the youngest median age (2023 ACS). 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 ZIP codes

RELATEDOldest by median age Most foreign-born residents Highest uninsured rate Most women Most men Highest disability rate

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPMEDIAN AGEVS 2000

01Hudson County, NJNJ735,03333.6+0%

02Essex County, NJNJ896,37934.7+0%

03Passaic County, NJNJ531,62434.8+0%

04Cumberland County, NJNJ157,14835.6+0%

05Middlesex County, NJNJ883,33535.7+0%

06Camden County, NJNJ535,79935.8+0%

07Mercer County, NJNJ399,28936.0+0%

08Gloucester County, NJNJ312,63836.1+0%

09Union County, NJNJ601,86336.6+0%

10Atlantic County, NJNJ278,65737.0+0%

11Burlington County, NJNJ481,43937.1+0%

12Sussex County, NJNJ148,06337.1+0%

13Somerset County, NJNJ356,48637.2+0%

14Warren County, NJNJ112,95337.6+0%

15Monmouth County, NJNJ651,03537.7+0%

16Morris County, NJNJ524,25137.8+0%

17Salem County, NJNJ66,28038.0+0%

18Hunterdon County, NJNJ131,78138.8+0%

19Bergen County, NJNJ977,02639.1+0%

20Ocean County, NJNJ673,74641.0+0%

21Cape May County, NJNJ93,39042.3+0%

SHOWING 1–21 OF 21

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