From April 1, 2017, New Hampshire plate code has remained 100 0000 to 418 0000. There are more public high schools in New Hampshire. It is perfectly located in the New England area of the United States of America. New Hampshire is ranked 41st with a population size of 1,334,795 in 2016. If you are in New Hampshire for a visit, simply try places like Isles of Shoals, Mt. Washington Auto Road, Kancamagus Highway and The Flume.