New Hampshire Citizen Voting-age Population By County in 2010 (ACS-5Yrs)

Updated on March 28, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2010, the citizen voting-age population for New Hampshire was 987,480 and represented 75.15% of the total New Hampshire population.

Among all New Hampshire counties, Hillsborough had the highest citizen voting-age population (288.21K), followed by Rockingham (219.37K), and Merrimack (111.74K).

In terms of percentages, Carroll had the highest percentage of its population being citizens of voting-age (79.62%), followed by Coos (79.21%), and Cheshire (78.58%).

The chart and table below shows the citizen voting-age population of each county and the percentage of each county's population that were citizens of voting-age.

You can see similar information for other states and by state for the United States.

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New Hampshire Citizen Voting-age Population By County in 2010
New Hampshire Citizen Voting-age Population By County in 2010
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County Citizen Voting-age Population % of County Population
Hillsborough 288215 72.13
Rockingham 219365 74.45
Merrimack 111740 76.13
Strafford 93765 76.76
Grafton 68860 77.94
Cheshire 60860 78.58
Belknap 46385 77.13
Carroll 38035 79.62
Sullivan 33765 77.36
Coos 26490 79.21