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 2020, at 28.1%. Hudson County had the lowest, at 11.3%. The median was 17.6% and the figure for New Jersey was 16.5%. Source: the U.S. Census Bureau.

Highest28.1Cape May County
Lowest11.3Hudson County
Median17.621 counties
New Jersey16.5History

All counties, 2020

CSVChart (SVG)

Cape May CountyCape May County: 28.1 %28.1Ocean CountyOcean County: 22.6 %22.6Hunterdon CountyHunterdon County: 19.4 %19.4Salem CountySalem County: 19.2 %19.2Atlantic CountyAtlantic County: 19 %19Warren CountyWarren County: 18.8 %18.8Sussex CountySussex County: 18.6 %18.6Monmouth CountyMonmouth County: 18.4 %18.4Burlington CountyBurlington County: 17.7 %17.7Bergen CountyBergen County: 17.7 %17.7Morris CountyMorris County: 17.6 %17.6Gloucester CountyGloucester County: 16.6 %16.6Camden CountyCamden County: 16.4 %16.4Somerset CountySomerset County: 16.2 %16.2Cumberland CountyCumberland County: 15.9 %15.9Mercer CountyMercer County: 15.3 %15.3Middlesex CountyMiddlesex County: 15.2 %15.2Passaic CountyPassaic County: 14.7 %14.7Union CountyUnion County: 14.2 %14.2Essex CountyEssex County: 13.2 %13.2Hudson CountyHudson County: 11.3 %11.3
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-09.

Full ranking

RankCounties2020 (%)
1Cape May County28.1
2Ocean County22.6
3Hunterdon County19.4
4Salem County19.2
5Atlantic County19
6Warren County18.8
7Sussex County18.6
8Monmouth County18.4
9Burlington County17.7
10Bergen County17.7
11Morris County17.6
12Gloucester County16.6
13Camden County16.4
14Somerset County16.2
15Cumberland County15.9
16Mercer County15.3
17Middlesex County15.2
18Passaic County14.7
19Union County14.2
20Essex County13.2
21Hudson County11.3

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 28.1% in 2020, according to the U.S. Census Bureau.

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

Hudson County, with 11.3% in 2020.

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