Ranking of New Hampshire Counties By Total Voting-age Population (18yrs and over) from Census 2020
Updated on August 22, 2023.
According to the data from the US 2020 Census, as at April 2020, among all the counties in New Hampshire, Hillsborough County had the highest voting-age population (18 years and over) (338.26K), followed by Rockingham County (254.09K), and Merrimack County (125.26K).
The chart below shows the top 10 counties with high voting-age population, and the table below shows the ranking of all New Hampshire counties based on voting-age population.
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 Voting-age Population from Census 2020
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| Rank | County | Voting-age Population |
|---|---|---|
| 1 | Hillsborough County | 338264 |
| 2 | Rockingham County | 254087 |
| 3 | Merrimack County | 125255 |
| 4 | Strafford County | 107455 |
| 5 | Grafton County | 76702 |
| 6 | Cheshire County | 62705 |
| 7 | Belknap County | 52453 |
| 8 | Carroll County | 42566 |
| 9 | Sullivan County | 35026 |
| 10 | Coos County | 26167 |