Long Beach is a Walsh Act Township in Ocean County, New Jersey, United States. Most of the township is located on Long Beach Island, a barrier island along the Atlantic Ocean whose summer population swells to as much as 130,000, including part-time residents and tourists. Long Beach was incorporated as a township by an act of the New Jersey Legislature on March 23, 1899, from portions of Eagleswood Township, Little Egg Harbor Township, Ocean Township, Stafford Township and Union Township (now known as Barnegat Township).