New Hampshire Counties by Population

Below are the 10 New Hampshire counties sorted by population from largest to smallest. The population data are from the 2022 American Community Survey.

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Rank County Population
1 Hillsborough County 422,733
2 Rockingham County 315,169
3 Merrimack County 153,918
4 Strafford County 130,965
5 Grafton County 90,836
6 Cheshire County 76,610
7 Belknap County 63,914
8 Carroll County 50,679
9 Sullivan County 43,356
10 Coos County 31,430

United States Census Bureau. B01001 SEX BY AGE, 2022 American Community Survey 5-Year Estimates. U.S. Census Bureau, American Community Survey Office. Web. 7 December 2023. http://www.census.gov/.

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