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 2020, at 30.3%. Strafford County had the lowest, at 16.6%. The median was 21.7% and the figure for New Hampshire was 19.4%. Source: the U.S. Census Bureau.

Highest30.3Carroll County
Lowest16.6Strafford County
Median21.710 counties
New Hampshire19.4History

All counties, 2020

CSVChart (SVG)

Carroll CountyCarroll County: 30.3 %30.3Coos CountyCoos County: 26.2 %26.2Belknap CountyBelknap County: 24.3 %24.3Sullivan CountySullivan County: 22.6 %22.6Grafton CountyGrafton County: 21.9 %21.9Cheshire CountyCheshire County: 21.4 %21.4Merrimack CountyMerrimack County: 19.5 %19.5Rockingham CountyRockingham County: 19.3 %19.3Hillsborough CountyHillsborough County: 16.6 %16.6Strafford CountyStrafford County: 16.6 %16.6
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-09.

Full ranking

RankCounties2020 (%)
1Carroll County30.3
2Coos County26.2
3Belknap County24.3
4Sullivan County22.6
5Grafton County21.9
6Cheshire County21.4
7Merrimack County19.5
8Rockingham County19.3
9Hillsborough County16.6
10Strafford County16.6

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

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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 30.3% in 2020, according to the U.S. Census Bureau.

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

Strafford County, with 16.6% 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 Hampshire: more rankings