The City of Northfield is a suburban community located in Atlantic County, New Jersey.The city calls itself the "Gateway to the Shore", just over the bridge from the beaches, and comprises an area of 3.5 square miles lying approximately seven miles to the west of Atlantic City and is bounded by the municipalities of Pleasantville, Linwood, and Egg Harbor Township. It has a population of 8,003 and boasts a 271 acre park.