New Hampshire Counties

New Hampshire has 10 counties. The largest is Hillsborough County (422,733 people) and the smallest is Coos County (31,430). Median home values run from $258K in Coos County to $629K in Rockingham County (Zillow ZHVI 2024). Effective property tax rates range from 1.16% in Carroll County to 2.63% in Sullivan County (Tax Foundation 2023). Median household income is highest in Rockingham County ($110K) and lowest in Coos County ($55K) (Census ACS 2022). Pick a county below for its full profile, or open the county map to filter by your own ranges.