THE MERRIMACK COUNTY LAND BRIEF
Land in the
Worcester/Monadnock Plateau setting.
Merrimack County has 932.9 square miles of land in New Hampshire. 4 mapped landscape regions meet across Merrimack County: Worcester/Monadnock Plateau, Gulf of Maine Coastal Plain, Sunapee Uplands, among others.
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
Merrimack County intersects 4 mapped regional units. The largest mapped shares are:
- Worcester/Monadnock Plateau43.2%
- Gulf of Maine Coastal Plain35.3%
- Sunapee Uplands21%
- White Mountain Foothills0.4%
Northeastern Coastal Zone in Merrimack 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 Merrimack County
The atlas lists 39 cities, towns, townships, and Census communities associated with Merrimack County, including Concord, Warner, Loudon. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Merrimack County by land and water
The Census records 22.1 square miles of water within Merrimack County, or 2.3% of its total area. That share is close to Merrimack County’s 2.3%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Merrimack County has 37.5 times the land area of nearby Boscawen town (24.9 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Belknap County, Grafton County, Hillsborough County, Rockingham County, Strafford County, Sullivan County within New Hampshire. A tract near one of these lines should be matched to the county identifier on its own records.

