THE ROCKINGHAM COUNTY LAND BRIEF
Land in the
Gulf of Maine Coastal Plain setting.
Rockingham County has 695.6 square miles of land in New Hampshire. 3 mapped landscape regions meet across Rockingham County: Gulf of Maine Coastal Plain, Gulf of Maine Coastal Lowland, Worcester/Monadnock Plateau.
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.
Regional context: Northeastern Coastal Zone ↗ · Regional mapping across the county footprint
Where the landscape changes
Rockingham County intersects 3 mapped regional units. The largest mapped shares are:
- Gulf of Maine Coastal Plain55.5%
- Gulf of Maine Coastal Lowland35.7%
- Worcester/Monadnock Plateau8.9%
Northeastern Highlands in Rockingham County
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.
Read the regional source ↗Finding your parcel within Rockingham County
The atlas lists 47 cities, towns, townships, and Census communities associated with Rockingham County, including Deerfield, Nottingham, Londonderry. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Rockingham County by land and water
The Census records 99.7 square miles of water within Rockingham County, or 12.5% of its total area. That share is close to Rockingham County’s 12.5%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Rockingham County has 40.5 times the land area of nearby Fremont town (17.2 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Hillsborough County, Merrimack County, Strafford County within New Hampshire. A tract near one of these lines should be matched to the county identifier on its own records.

