Located in Merrimack County, north of Manchester on Highway 28, Allenstown is on the edge of Bear Brook State Park, which is one of the State's largest state parks with about 10,000 acres.With over forty miles of trails, through this heavily forested park, one will encounter seldom visited marshes, bogs, summits and ponds while on foot, horseback, or mountain bike. Also nearby is Salem's own Canobie Lake Park, New Hampshire's oldest amusement parks.
In 1759, Allenstown received it's name in honor of Governor Samuel Allen, whose heirs obtained the grant for the original four square mile tract of land, and was incorporated in 1832.
