RANKING · 1990 CENSUS · 10 SHOWN OF 10

Oldest by median age, New Hampshire counties · 1990

New Hampshire counties ranked by median age of residents (1990 ACS). This list covers the 10 counties in New Hampshire that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros ZIP codes

RELATEDLargest foreign-born population Most residents with a disability Largest veteran population Most uninsured people Largest senior population Most unmarried people

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPMEDIAN AGEVS –

01Carroll County, NHNH52,78436.8–

02Coos County, NHNH31,34336.3–

03Sullivan County, NHNH43,96135.3–

04Belknap County, NHNH65,14735.0–

05Merrimack County, NHNH158,07833.5–

06Cheshire County, NHNH78,26933.4–

07Rockingham County, NHNH324,07732.6–

08Grafton County, NHNH93,22532.3–

09Hillsborough County, NHNH433,41532.2–

10Strafford County, NHNH135,04330.6–

SHOWING 1–10 OF 10

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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU DECENNIAL CENSUS