Grafton County administrative offices are located at 3855 Dartmouth College Highway, North Haverhill, NH 03774; phone: 603-787-6941.
Grafton, with 1,747 square miles of area, is second largest in the State after Coos County. Grafton County is home to the famous Ivy League College, Dartmouth, founded in 1769, one of 9 American colleges that were established before the American Revolution.
In 1692 the British established the Province of New Hampshire, and divided it into 5 counties, of which Grafton was known as "The Fifth," established by the Colonial legislature in March of 1771.
The first white settler to the region now included within the limits of Grafton County, so far as known, was in 1709, Thomas Baker, for whom the name of the Baker River is derived.