New Hampshire Citizen Voting-age Population By County in 2015 (ACS-5Yrs)

Updated on March 28, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2015, the citizen voting-age population for New Hampshire was 1,020,130 and represented 77.04% of the total New Hampshire population.

Among all New Hampshire counties, Hillsborough had the highest citizen voting-age population (298.73K), followed by Rockingham (230.76K), and Merrimack (114.44K).

In terms of percentages, Carroll had the highest percentage of its population being citizens of voting-age (81.50%), followed by Coos (80.83%), and Cheshire (79.84%).

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 2015
New Hampshire Citizen Voting-age Population By County in 2015
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County Citizen Voting-age Population % of County Population
Hillsborough 298725 73.95
Rockingham 230760 77.18
Merrimack 114440 77.71
Strafford 97500 77.83
Grafton 71145 79.63
Cheshire 61025 79.84
Belknap 47810 79.16
Carroll 38725 81.50
Sullivan 34240 79.38
Coos 25760 80.83