Data / Rankings / Population aged 65 and over / Counties in New Jersey

Counties in New Jersey by share of population aged 65 and over

Cape May County had the highest share of population aged 65 and over of 21 counties in 2021, at 28.7%. Hudson County had the lowest, at 11.8%. The median was 18% and the figure for New Jersey was 16.9%. Source: the U.S. Census Bureau.

Highest28.7Cape May County
Lowest11.8Hudson County
Median1821 counties
New Jersey16.9History

All counties, 2021

CSVChart (SVG)

Cape May CountyCape May County: 28.7 %28.7Ocean CountyOcean County: 22.6 %22.6Hunterdon CountyHunterdon County: 20.1 %20.1Atlantic CountyAtlantic County: 19.5 %19.5Salem CountySalem County: 19.5 %19.5Warren CountyWarren County: 19.3 %19.3Sussex CountySussex County: 19 %19Monmouth CountyMonmouth County: 18.8 %18.8Burlington CountyBurlington County: 18.1 %18.1Bergen CountyBergen County: 18.1 %18.1Morris CountyMorris County: 18 %18Gloucester CountyGloucester County: 16.9 %16.9Camden CountyCamden County: 16.7 %16.7Somerset CountySomerset County: 16.6 %16.6Cumberland CountyCumberland County: 16.2 %16.2Mercer CountyMercer County: 15.9 %15.9Middlesex CountyMiddlesex County: 15.6 %15.6Passaic CountyPassaic County: 15.2 %15.2Union CountyUnion County: 14.5 %14.5Essex CountyEssex County: 13.6 %13.6Hudson CountyHudson County: 11.8 %11.8
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-09.

Full ranking

RankCounties2021 (%)Change on 2020
1Cape May County28.7+0.7 pts
2Ocean County22.60 pts
3Hunterdon County20.1+0.7 pts
4Atlantic County19.5+0.5 pts
5Salem County19.5+0.2 pts
6Warren County19.3+0.5 pts
7Sussex County19+0.4 pts
8Monmouth County18.8+0.4 pts
9Burlington County18.1+0.4 pts
10Bergen County18.1+0.4 pts
11Morris County18+0.4 pts
12Gloucester County16.9+0.3 pts
13Camden County16.7+0.4 pts
14Somerset County16.6+0.4 pts
15Cumberland County16.2+0.4 pts
16Mercer County15.9+0.5 pts
17Middlesex County15.6+0.4 pts
18Passaic County15.2+0.4 pts
19Union County14.5+0.3 pts
20Essex County13.6+0.4 pts
21Hudson County11.8+0.5 pts

Other periods

About this ranking

Residents aged 65 or over as a percentage of total population. Spain: 1 January, INE annual census. United States: 1 July, Census Bureau population estimates. World Bank figures for other countries and the World refer to mid-year.

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. Population Estimates Program, county population by age and sex (cc-est agesex): residents aged 65 and over as a percentage of the total, 1 July; states and the nation summed from counties. https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/counties/asrh/cc-est2025-agesex-all.csv. Retrieved 2026-10-09.

Use this data in your AI agent

Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:

Rank Counties in New Jersey by share of population aged 65 and over using official data, and cite the source.
rank_places {"indicator":"population_65_plus_share","level":"province","within":"New Jersey","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=population_65_plus_share&level=province&within=New%20Jersey&limit=10

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Questions

Which county has the highest share of population aged 65 and over?

Cape May County, with 28.7% in 2021, according to the U.S. Census Bureau.

Which county has the lowest share of population aged 65 and over?

Hudson County, with 11.8% in 2021.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Population Estimates Program, county population by age and sex (cc-est agesex): residents aged 65 and over as a percentage of the total, 1 July; states and the nation summed from counties. Retrieved 2026-10-09.

Population aged 65 and over: other rankings

Counties in New Jersey: more rankings