RANKING · 2024 ACS · 10 SHOWN OF 10

Largest households, New Hampshire counties

New Hampshire counties ranked by average household size (2024 ACS). This list covers the 10 counties in New Hampshire that qualify, ranked against each other statewide.

New HampshireAll states All rankings

SAME RANKING BYCities States Metros ZIP codes

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

YEAR2010 2020 2024

RANKPLACESTATEPOPAVERAGE HOUSEHOLD SIZEVS 2010

01Sullivan County, NHNH43,9612.59+9%

02Hillsborough County, NHNH433,4152.48−3%

03Rockingham County, NHNH324,0772.48−3%

04Merrimack County, NHNH158,0782.46+0%

05Belknap County, NHNH65,1472.41+3%

06Cheshire County, NHNH78,2692.40−1%

07Strafford County, NHNH135,0432.39−3%

08Carroll County, NHNH52,7842.34−2%

09Grafton County, NHNH93,2252.29−5%

10Coos County, NHNH31,3432.08−3%

SHOWING 1–10 OF 10

Download CSV (full list, 10 rows)

UPDATED 2026-08-08 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES