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 Population Estimates Program and 2021 American Community Survey.

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Rank County Population
1 Hillsborough County 426,594
2 Rockingham County 319,424
3 Merrimack County 156,020
4 Strafford County 132,275
5 Grafton County 91,126
6 Cheshire County 77,350
7 Belknap County 64,781
8 Carroll County 52,199
9 Sullivan County 43,958
10 Coos County 31,504

United States Census Bureau. B01001 SEX BY AGE, 2021 American Community Survey 5-Year Estimates. U.S. Census Bureau, American Community Survey Office. Web. 8 December 2022.

United States Census Bureau. Annual Estimates of the Resident Population: April 1, 2020 to July 1, 2022. U.S. Census Bureau, Population Division. Web. May 2023.


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