Population of Counties in New Hampshire (2018)

Name 2018 Population Growth Rate
Hillsborough County407,7181.67%
Rockingham County303,9222.93%
Merrimack County148,1331.20%
Strafford County127,2703.32%
Grafton County89,3110.23%
Cheshire County75,697-1.76%
Belknap County60,6060.85%
Carroll County47,399-0.91%
Sullivan County43,036-1.66%
Coos County31,923-3.19%