New Hampshire Citizen Population By County in 2011 (ACS-5Yrs)

Updated on March 28, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2011, the citizen population for New Hampshire was 1,282,890 and represented 97.49% of the total New Hampshire population.

Among all New Hampshire counties, Hillsborough had the highest citizen population (383.24K), followed by Rockingham (290.08K), and Merrimack (144.42K).

In terms of percentages, Carroll had the highest percentage of its population being citizens (98.98%), followed by Coos (98.87%), and Sullivan (98.83%).

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 2011
New Hampshire Citizen Population By County in 2011
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County Citizen Population % of County Population
Hillsborough 383235 95.75
Rockingham 290075 98.28
Merrimack 144415 98.39
Strafford 120345 97.95
Grafton 85710 96.64
Cheshire 76345 98.77
Belknap 59445 98.80
Carroll 47325 98.98
Sullivan 43150 98.83
Coos 32850 98.87