is northfield, nh a town?
Location in Merrimack County and the state of New Hampshire. Coordinates: 43Â°26â²15â³N 71Â°35â²35â³W / 43.43750Â°N 71.59306Â°W / 43.43750; -71.59306Coordinates: 43Â°26â²15â³N 71Â°35â²35â³W / 43.43750Â°N 71.59306Â°W / 43.43750; -71.59306. Northfield is a town in Merrimack County, New Hampshire, United States.