Ranking of New Hampshire Counties By Population in 2017

Updated on January 28, 2024.

Based on the US Census Vintage data estimates, in 2017, the Population for New Hampshire was 1.35M. Among all New Hampshire counties, Hillsborough County had the highest population (413.55K), followed by Rockingham County (306.97K), and Merrimack County (150.05K).

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.

See this for other years:
Ranking of New Hampshire Counties By Population in 2017
Hillsborough
Rockingham
Merrimack
Strafford
Grafton
Cheshire
Belknap
Carroll
Sullivan
Coos
Ranking of New Hampshire Counties By Population in 2017
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Rank County Population
1 Hillsborough County 413545
2 Rockingham County 306970
3 Merrimack County 150054
4 Strafford County 130034
5 Grafton County 90176
6 Cheshire County 76062
7 Belknap County 60907
8 Carroll County 48176
9 Sullivan County 43053
10 Coos County 31418