New Hampshire Citizen Population By County in 2017 (ACS-5Yrs)

Updated on March 28, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2017, the citizen population for New Hampshire was 1,295,445 and represented 97.27% of the total New Hampshire population.

Among all New Hampshire counties, Hillsborough had the highest citizen population (388.94K), followed by Rockingham (296.77K), and Merrimack (144.42K).

In terms of percentages, Sullivan had the highest percentage of its population being citizens (99.28%), followed by Belknap (99.07%), and Carroll (98.82%).

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

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

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New Hampshire Citizen Population By County in 2017
New Hampshire Citizen Population By County in 2017
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County Citizen Population % of County Population
Hillsborough 388940 95.71
Rockingham 296765 98.11
Merrimack 144415 97.60
Strafford 122570 96.86
Grafton 86375 96.75
Cheshire 75095 98.67
Belknap 59825 99.07
Carroll 46965 98.82
Sullivan 42765 99.28
Coos 31730 98.79