RANKING · 1990 CENSUS · 21 SHOWN OF 21

Oldest by median age, New Jersey counties · 1990

New Jersey counties ranked by median age of residents (1990 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

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 –

01Ocean County, NJNJ673,74638.5–

02Bergen County, NJNJ977,02637.7–

03Cape May County, NJNJ93,39037.7–

04Union County, NJNJ601,86335.9–

05Morris County, NJNJ524,25135.3–

06Salem County, NJNJ66,28035.2–

07Hunterdon County, NJNJ131,78135.1–

08Monmouth County, NJNJ651,03535.0–

09Somerset County, NJNJ356,48634.9–

10Warren County, NJNJ112,95334.4–

11Mercer County, NJNJ399,28934.2–

12Atlantic County, NJNJ278,65734.1–

13Cumberland County, NJNJ157,14833.5–

14Middlesex County, NJNJ883,33533.5–

15Essex County, NJNJ896,37933.5–

16Passaic County, NJNJ531,62433.5–

17Hudson County, NJNJ735,03333.3–

18Burlington County, NJNJ481,43933.0–

19Sussex County, NJNJ148,06333.0–

20Camden County, NJNJ535,79932.8–

21Gloucester County, NJNJ312,63832.5–

SHOWING 1–21 OF 21

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