Data / Rankings / Median age / Counties in New Hampshire

Counties in New Hampshire by median age, 2024

Carroll County had the highest median age of 10 counties in 2024, at 54.6 years. Strafford County had the lowest, at 38.2 years. The median was 44.6 years and the figure for New Hampshire was 43.3 years. Source: the U.S. Census Bureau.

Highest54.6Carroll County
Lowest38.2Strafford County
Median44.610 counties
New Hampshire43.3History

All counties, 2024

CSVChart (SVG)

Carroll CountyCarroll County: 54.6 years54.6Coos CountyCoos County: 50.3 years50.3Belknap CountyBelknap County: 48.4 years48.4Sullivan CountySullivan County: 47 years47Rockingham CountyRockingham County: 45 years45Grafton CountyGrafton County: 44.1 years44.1Cheshire CountyCheshire County: 43.6 years43.6Merrimack CountyMerrimack County: 42.9 years42.9Hillsborough CountyHillsborough County: 41 years41Strafford CountyStrafford County: 38.2 years38.2
years. Source: U.S. Census Bureau. Retrieved 2026-10-08.

Full ranking

RankCounties2024
years		Change on 2023
1Carroll County54.6+0.4
2Coos County50.3+0.4
3Belknap County48.4+0.1
4Sullivan County47-0.3
5Rockingham County45+0.2
6Grafton County44.1+0.1
7Cheshire County43.6+0.1
8Merrimack County42.9+0.3
9Hillsborough County410
10Strafford County38.2+0.3

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/2024/table-based-SF/data/5YRData/acsdt5y2024-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 54.6 years in 2024, according to the U.S. Census Bureau.

Which county has the lowest median age?

Strafford County, with 38.2 years in 2024.

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