New Hampshire Citizen Voting-age Population By County in 2019 (ACS-5Yrs)

Updated on March 28, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2019, the citizen voting-age population for New Hampshire was 1,055,455 and represented 78.29% of the total New Hampshire population.

Among all New Hampshire counties, Hillsborough had the highest citizen voting-age population (311.70K), followed by Rockingham (241.06K), and Merrimack (117.95K).

In terms of percentages, Carroll had the highest percentage of its population being citizens of voting-age (83.11%), followed by Coos (82.36%), and Cheshire (81.14%).

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 2019
New Hampshire Citizen Voting-age Population By County in 2019
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County Citizen Voting-age Population % of County Population
Hillsborough 311700 75.47
Rockingham 241060 78.69
Merrimack 117950 78.68
Strafford 101480 78.59
Grafton 71975 80.17
Cheshire 61695 81.14
Belknap 48790 80.14
Carroll 40010 83.11
Sullivan 34655 80.40
Coos 26140 82.36