New Hampshire Citizen Population By County in 2021 (ACS-5Yrs)

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2021, the citizen population for New Hampshire was 1,336,870 and represented 97.43% of the total New Hampshire population.

Among all New Hampshire counties, Hillsborough had the highest citizen population (401.69K), followed by Rockingham (307.33K), and Merrimack (150.04K).

In terms of percentages, Carroll had the highest percentage of its population being citizens (99.39%), followed by Sullivan (99.17%), and Coos (99.12%).

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.