THE HILLSBOROUGH COUNTY LAND BRIEF
Land in the
Worcester/Monadnock Plateau setting.
Hillsborough County has 876.5 square miles of land in New Hampshire. 3 mapped landscape regions meet across Hillsborough County: Worcester/Monadnock Plateau, Gulf of Maine Coastal Plain, Sunapee Uplands.
Forested hills and mountains span northern New England, the Adirondacks and higher Catskills. Glacial lakes and steep streams accompany a transition between northern hardwood and spruce-fir forests.
Regional context: Northeastern Highlands ↗ · Regional mapping across the county footprint
Where the landscape changes
Hillsborough County intersects 3 mapped regional units. The largest mapped shares are:
- Worcester/Monadnock Plateau52.5%
- Gulf of Maine Coastal Plain42.9%
- Sunapee Uplands4.5%
Northeastern Coastal Zone in Hillsborough County
Irregular plains and low hills form a coastal transition with glacial lakes and oak-pine woodland. This northeastern landscape is gentler than the mountainous country farther inland.
Read the regional source ↗Finding your parcel within Hillsborough County
The atlas lists 47 cities, towns, townships, and Census communities associated with Hillsborough County, including Weare, Hillsborough, New Boston. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Hillsborough County by land and water
The Census records 16 square miles of water within Hillsborough County, or 1.8% of its total area. That share is close to Hillsborough County’s 1.8%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Hillsborough County has 52.1 times the land area of nearby Mont Vernon town (16.8 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Cheshire County, Merrimack County, Rockingham County, Sullivan County within New Hampshire. A tract near one of these lines should be matched to the county identifier on its own records.

