Hillsborough County, New Hampshire

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

  1. "QuickFacts: Hillsborough County, New Hampshire". United States Census Bureau. Retrieved August 15, 2023.