Plymouth Regional High School includes students from a town in Grafton County, New Hampshire that had a population of 247 in what census year?
Waterville Valley, New Hampshire Waterville Valley is a town in Grafton County, New Hampshire, United States. The population was 247 at the 2010 census.
Kingston, New Hampshire Kingston is a town in Rockingham County, New Hampshire, United States. The population at the 2010 census was 6,025.