Hillsborough County, New Hampshire
![](http://upload.wikimedia.org/wikipedia/commons/thumb/f/fb/Map_of_New_Hampshire_highlighting_Hillsborough_County.svg/250px-Map_of_New_Hampshire_highlighting_Hillsborough_County.svg.png)
Map of New Hampshire highlighting Hillsborough County
Hillsborough County is the most populous county in the U.S. state of New Hampshire. As of the 2020 census, the population was 422,937.[1] Its county seats are Manchester and Nashua. Hillsborough is northern New England's most populous county as well as its most densely populated.
References
- ↑ "QuickFacts: Hillsborough County, New Hampshire". United States Census Bureau. Retrieved August 15, 2023.