RANKING · 2020 CENSUS · 10 SHOWN OF 10

Oldest housing stock, New Hampshire counties · 2020

New Hampshire counties ranked by oldest median year of construction (2020 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

RELATEDMost expensive homes Cheapest homes Highest median rent Lowest median rent Highest homeownership rate Highest renter share

YEAR1990 2010 2020 2024

RANKPLACESTATEPOPMEDIAN YEAR BUILTVS 1990

01Coos County, NHNH31,3431966+1%

02Cheshire County, NHNH78,2691971+1%

03Sullivan County, NHNH43,9611973+1%

04Merrimack County, NHNH158,0781976+0%

05Strafford County, NHNH135,0431976+1%

06Belknap County, NHNH65,1471977+0%

07Hillsborough County, NHNH433,4151977+0%

08Grafton County, NHNH93,2251979+1%

09Carroll County, NHNH52,7841980+0%

10Rockingham County, NHNH324,0771981+0%

SHOWING 1–10 OF 10

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS