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

Name: Counties in New Hampshire by share of population aged 65 and over, 2021
Creator: U.S. Census Bureau
License: Public domain (US federal government work, citation requested)

Carroll County had the highest share of population aged 65 and over of 10 counties in 2021, at 30.9%. Hillsborough County had the lowest, at 17.2%. The median was 22.6% and the figure for New Hampshire was 20.1%. Source: the U.S. Census Bureau.

Highest30.9Carroll County

Lowest17.2Hillsborough County

Median22.610 counties

New Hampshire20.1History

All counties, 2021

CSV Chart (SVG)

%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-09.

Full ranking

Rank	Counties	2021 (%)	Change on 2020
1	Carroll County	30.9	+0.6 pts
2	Coos County	26.4	+0.1 pts
3	Belknap County	24.6	+0.3 pts
4	Sullivan County	23.2	+0.5 pts
5	Grafton County	23.1	+1.1 pts
6	Cheshire County	22.1	+0.7 pts
7	Merrimack County	20.2	+0.7 pts
8	Rockingham County	20	+0.7 pts
9	Strafford County	17.2	+0.6 pts
10	Hillsborough County	17.2	+0.6 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 30.9% in 2021, according to the U.S. Census Bureau.

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

Hillsborough County, with 17.2% 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.