Data / Rankings / Median age / Counties in New Jersey

Counties in New Jersey by median age

Cape May County had the highest median age of 21 counties in 2022, at 50.9 years. Hudson County had the lowest, at 35.6 years. The median was 41.8 years and the figure for New Jersey was 40 years. Source: the U.S. Census Bureau.

Highest50.9Cape May County
Lowest35.6Hudson County
Median41.821 counties
New Jersey40History

All counties, 2022

CSVChart (SVG)

Cape May CountyCape May County: 50.9 years50.9Hunterdon CountyHunterdon County: 46.4 years46.4Sussex CountySussex County: 44.5 years44.5Warren CountyWarren County: 44 years44Monmouth CountyMonmouth County: 43.3 years43.3Morris CountyMorris County: 42.7 years42.7Atlantic CountyAtlantic County: 42 years42Bergen CountyBergen County: 42 years42Somerset CountySomerset County: 42 years42Ocean CountyOcean County: 41.8 years41.8Salem CountySalem County: 41.8 years41.8Burlington CountyBurlington County: 41.7 years41.7Gloucester CountyGloucester County: 40.2 years40.2Mercer CountyMercer County: 39.3 years39.3Middlesex CountyMiddlesex County: 39.1 years39.1Union CountyUnion County: 39 years39Camden CountyCamden County: 38.7 years38.7Cumberland CountyCumberland County: 37.9 years37.9Passaic CountyPassaic County: 37.8 years37.8Essex CountyEssex County: 37.6 years37.6Hudson CountyHudson County: 35.6 years35.6
years. Source: U.S. Census Bureau. Retrieved 2026-10-08.

Full ranking

RankCounties2022
years		Change on 2021
1Cape May County50.9+0.5
2Hunterdon County46.4-0.1
3Sussex County44.5-0.4
4Warren County44-0.1
5Monmouth County43.30
6Morris County42.70
7Atlantic County420
7Bergen County42+0.1
7Somerset County42+0.2
10Ocean County41.8-0.2
10Salem County41.8-0.7
12Burlington County41.7+0.2
13Gloucester County40.2-0.4
14Mercer County39.3+0.4
15Middlesex County39.10
16Union County390
17Camden County38.70
18Cumberland County37.9+0.3
19Passaic County37.8+0.3
20Essex County37.6-0.2
21Hudson County35.60

Other periods

About this ranking

Age that divides the resident population into two halves of equal size. Spain and the EU: on 1 January. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. American Community Survey 5-year estimates, table B01002: median age, total population. https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b01002.dat. Retrieved 2026-10-08.

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Questions

Which county has the highest median age?

Cape May County, with 50.9 years in 2022, according to the U.S. Census Bureau.

Which county has the lowest median age?

Hudson County, with 35.6 years in 2022.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, American Community Survey 5-year estimates, table B01002: median age, total population. Retrieved 2026-10-08.

Median age: other rankings

Counties in New Jersey: more rankings