The Merrimack Valley is the area surrounding the Merrimack River in northeastern Massachusetts and southern New Hampshire. The area on either side of the Merrimack in New Hampshire is named the Merrimack Valley Region by the NH Division of Travel and Tourism Development.
The older and newer parts of the town, which are the more affluent and middle-to-lower class parts of the town respectively, are divided by Interstate 495, which roughly follows the river. Merrimack is located on exit 53 of this highway, though it also shares exit 52 with the city of Haverhill, Massachusetts.
