New Hampshire Citizen Population By County in 2012 (ACS-5Yrs)

Updated on March 28, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2012, the citizen population for New Hampshire was 1,284,075 and represented 97.47% of the total New Hampshire population.

Among all New Hampshire counties, Hillsborough had the highest citizen population (384.17K), followed by Rockingham (291.07K), and Merrimack (144.18K).

In terms of percentages, Coos had the highest percentage of its population being citizens (99.03%), followed by Sullivan (99.00%), and Carroll (98.65%).

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 2012
New Hampshire Citizen Population By County in 2012
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County Citizen Population % of County Population
Hillsborough 384165 95.78
Rockingham 291065 98.38
Merrimack 144175 98.25
Strafford 120585 97.80
Grafton 85990 96.63
Cheshire 76040 98.62
Belknap 59295 98.49
Carroll 47115 98.65
Sullivan 43100 99.00
Coos 32550 99.03