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

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

Carroll County had the highest share of population aged 65 and over of 10 counties in 2023, at 33%. Strafford County had the lowest, at 18.4%. The median was 23.8% and the figure for New Hampshire was 21.5%. Source: the U.S. Census Bureau.

Highest33Carroll County
Lowest18.4Strafford County
Median23.810 counties
New Hampshire21.5History

All counties, 2023

CSVChart (SVG)

Carroll CountyCarroll County: 33 %33Coos CountyCoos County: 27.3 %27.3Belknap CountyBelknap County: 26.5 %26.5Sullivan CountySullivan County: 24.4 %24.4Grafton CountyGrafton County: 24.2 %24.2Cheshire CountyCheshire County: 23.5 %23.5Rockingham CountyRockingham County: 21.8 %21.8Merrimack CountyMerrimack County: 21.6 %21.6Hillsborough CountyHillsborough County: 18.5 %18.5Strafford CountyStrafford County: 18.4 %18.4
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-09.

Full ranking

RankCounties2023 (%)Change on 2022
1Carroll County33+1 pts
2Coos County27.3+0.8 pts
3Belknap County26.5+0.8 pts
4Sullivan County24.4+0.6 pts
5Grafton County24.2+0.8 pts
6Cheshire County23.5+0.8 pts
7Rockingham County21.8+0.8 pts
8Merrimack County21.6+0.7 pts
9Hillsborough County18.5+0.7 pts
10Strafford County18.4+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 Hampshire 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 Hampshire","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=population_65_plus_share&level=province&within=New%20Hampshire&limit=10

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Questions

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

Carroll County, with 33% in 2023, according to the U.S. Census Bureau.

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

Strafford County, with 18.4% in 2023.

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 Hampshire: more rankings