Ranking of New Hampshire Counties By Population in 2019

Updated on January 28, 2024.

Based on the US Census Vintage data estimates, in 2019, the Population for New Hampshire was 1.36M. Among all New Hampshire counties, Hillsborough County had the highest population (417.74K), followed by Rockingham County (309.65K), and Merrimack County (151.61K).

The chart below shows the top 10 counties, and the table below shows the ranking of all New Hampshire counties.

You can see similar ranking information for related topics, and for other states. You can also see the ranking of all counties in the United States.

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Ranking of New Hampshire Counties By Population in 2019
Hillsborough
417.74K
Rockingham
309.65K
Merrimack
151.61K
Strafford
130.72K
Grafton
90.37K
Cheshire
75.88K
Belknap
61.40K
Carroll
48.75K
Sullivan
43.26K
Coos
31.42K
Ranking of New Hampshire Counties By Population in 2019
Rank
County
Population
1 Hillsborough County 417,738
2 Rockingham County 309,647
3 Merrimack County 151,606
4 Strafford County 130,716
5 Grafton County 90,369
6 Cheshire County 75,880
7 Belknap County 61,398
8 Carroll County 48,745
9 Sullivan County 43,263
10 Coos County 31,421
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