Depending on which of the events in the history of New Hampshire’s settlement that you celebrate, in 2008 New Hampshire is either 220, 317, or 328 years old. Of course all of these days are connected with European colonization of the area. The Native Peoples resided here for thousands of years longer.
New Hampshire separated from the Massachusetts Colony On January 1, 1680 [328 years ago] when it became a separately governed colony. It reunited with the Massachusetts colony in 1688, and separated finally in 1691 (becoming the royal Province of New Hampshire). [ 317 yrs ago].
Following the American Revolutionary War, New Hampshire became the 9th state in the fledgling United States of America on June 21, 1788 [220 years ago].