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.

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Ranking of New Hampshire Counties By Population in 2017
Hillsborough
413.55K
Rockingham
306.97K
Merrimack
150.05K
Strafford
130.03K
Grafton
90.18K
Cheshire
76.06K
Belknap
60.91K
Carroll
48.18K
Sullivan
43.05K
Coos
31.42K
Ranking of New Hampshire Counties By Population in 2017
Rank
County
Population
1 Hillsborough County 413,545
2 Rockingham County 306,970
3 Merrimack County 150,054
4 Strafford County 130,034
5 Grafton County 90,176
6 Cheshire County 76,062
7 Belknap County 60,907
8 Carroll County 48,176
9 Sullivan County 43,053
10 Coos County 31,418
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