New Hampshire Population By County in 2018
Updated on January 27, 2024.
According to the US Census Bureau population estimates, there were 1,355,064 people living in New Hampshire in 2018. Hillsborough[object Promise] County was the most populated county with 414,917 residents, followed by Rockingham[object Promise] County with 308,377 residents, and Merrimack[object Promise] County with 150,981 residents. Coos[object Promise] County with a population of 31,490 was the least populated county in New Hampshire in 2018.
Use the map below to interactively explore the population for each county in New Hampshire in 2018. The data can also be explored further by sorting and filtering with the table below.
You can see similar information for other states and by state for the United States.
Related Topics: New Hampshire Census Vintage Data Topic List.
Data Source: US Census Bureau (Vintage).
See this for other years:
New Hampshire Population By County (2018)
Table of New Hampshire Population By County in 2018
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| County | Population | % of State Population |
|---|---|---|
| Belknap | 61,242 | 4.52% |
| Carroll | 48,690 | 3.59% |
| Cheshire | 75,925 | 5.60% |
| Coos | 31,490 | 2.32% |
| Grafton | 90,206 | 6.66% |
| Hillsborough | 414,917 | 30.62% |
| Merrimack | 150,981 | 11.14% |
| Rockingham | 308,377 | 22.76% |
| Strafford | 130,042 | 9.60% |
| Sullivan | 43,194 | 3.19% |