Data / Rankings / Median age / Counties in New Hampshire

Counties in New Hampshire by median age

Carroll County had the highest median age of 10 counties in 2022, at 53.8 years. Strafford County had the lowest, at 37.7 years. The median was 44.4 years and the figure for New Hampshire was 43.1 years. Source: the U.S. Census Bureau.

Highest53.8Carroll County
Lowest37.7Strafford County
Median44.410 counties
New Hampshire43.1History

All counties, 2022

CSVChart (SVG)

Carroll CountyCarroll County: 53.8 years53.8Coos CountyCoos County: 49.7 years49.7Belknap CountyBelknap County: 47.8 years47.8Sullivan CountySullivan County: 47 years47Rockingham CountyRockingham County: 44.7 years44.7Grafton CountyGrafton County: 44.1 years44.1Cheshire CountyCheshire County: 43.5 years43.5Merrimack CountyMerrimack County: 42.8 years42.8Hillsborough CountyHillsborough County: 40.9 years40.9Strafford CountyStrafford County: 37.7 years37.7
years. Source: U.S. Census Bureau. Retrieved 2026-10-08.

Full ranking

RankCounties2022
years		Change on 2021
1Carroll County53.8+0.2
2Coos County49.7+0.9
3Belknap County47.8+0.3
4Sullivan County47+0.5
5Rockingham County44.7+0.1
6Grafton County44.1+1
7Cheshire County43.5+0.4
8Merrimack County42.8-0.2
9Hillsborough County40.90
10Strafford County37.7+0.7

Other periods

About this ranking

Age that divides the resident population into two halves of equal size. Spain and the EU: on 1 January. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span.

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. American Community Survey 5-year estimates, table B01002: median age, total population. https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b01002.dat. Retrieved 2026-10-08.

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Rank Counties in New Hampshire by median age using official data, and cite the source.
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Questions

Which county has the highest median age?

Carroll County, with 53.8 years in 2022, according to the U.S. Census Bureau.

Which county has the lowest median age?

Strafford County, with 37.7 years in 2022.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, American Community Survey 5-year estimates, table B01002: median age, total population. Retrieved 2026-10-08.

Median age: other rankings

Counties in New Hampshire: more rankings