As of the 2020 census, the population was 314,176, making it New Hampshire's second-most populous county. The county seat is Brentwood. Rockingham County is ...

Rockingham County, New Hampshire has 695.4 square miles of land area and is the 7th largest county in New Hampshire by total area.

In 2022, Rockingham County, NH had a population of 315k people with a median age of 44.7 and a median household income of $110,225.

Rockingham County, New Hampshire's estimated 2024 population is 321,745 with a growth rate of 0.33% in the past year according to the most recent United States ...

The population of Rockingham County, New Hampshire in 2022 was 319,424, 8.2% up from the 295,300 who lived there in 2010. For comparison, the US population ...

Frequently requested statistics for: Rockingham County, New Hampshire.

Census data for Rockingham County, NH (pop. 320689), including age, race, sex, income, poverty, marital status, education and more.

The overall land mass is 699 square miles, with a population of nearly 300,000 (www.nh.gov/oep). There are 36 towns and 1 city in the county, which are divided ...

As of the 2020 Census, the population density was 451.8 persons per square mile. Rockingham County includes one city, Portsmouth, and 36 towns. The county.

Rockingham County, New Hampshire Cities (2024) ; 5, 16,361, 16,234, -0.38% ; 6, 16,135, 16,043, -0.23% ...