Ranking of New Hampshire Counties By Total Population from Census 2020
Updated on February 7, 2023.
According to the data from the US 2020 Census, the most populated New Hampshire county as at April 2020 was Hillsborough County (422.94K), followed by Rockingham County (314.18K), and Merrimack County (153.81K).
The chart below shows the top 10 most populated counties, and the table below shows the ranking of all the counties in the state of New Hampshire.
You can also see the ranking of counties by population for other states as well as for the whole United States.
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Related Topics: New Hampshire Census 2020 Topic List.
Data Source: US Census Bureau, 2020 Census.
Ranking of New Hampshire Counties By Total Population from Census 2020
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| Rank | County | Population |
|---|---|---|
| 1 | Hillsborough County | 422937 |
| 2 | Rockingham County | 314176 |
| 3 | Merrimack County | 153808 |
| 4 | Strafford County | 130889 |
| 5 | Grafton County | 91118 |
| 6 | Cheshire County | 76458 |
| 7 | Belknap County | 63705 |
| 8 | Carroll County | 50107 |
| 9 | Sullivan County | 43063 |
| 10 | Coos County | 31268 |