Longport is a borough in Atlantic County, New Jersey on the Atlantic Ocean shore of Absecon Island. As of the 2010 United States Census, the borough's population was 895, reflecting a decline of 159 (-15.1%) from the 1,054 counted in the 2000 Census, which had in turn declined by 170 (-13.9%) from the 1,224 counted in the 1990 Census.
James Long, an absentee owner, purchased a parcel in 1857 that grew over the years as sand accumulated and as additional property was purchased. Acquired by M. Simpson McCullough in 1882, the community was named Longport in honor of Long.
Longport was incorporated as a borough by an act of the New Jersey Legislature on March 7, 1898, from portions of Egg Harbor Township.
In 2014, residents of Seaview Harbor, located across Beach Thorofare, submitted a petition to join neighboring Longport, citing lack of access to the rest of Egg Harbor Township and high taxes. In November 2016, the Township Committee voted to deny the secession plan. The plan has been brought before an appeals judge and the outcome is pending.
According to the United States Census Bureau, the borough had a total area of 1.56 square miles (4.03 km2), including 0.40 square miles (1.02 km2) of land and 1.16 square miles (3.01 km2) of water (74.49%).
Longport is located on the southwest corner of 8.1-mile (13.0 km) long Absecon Island, along with Margate City, Ventnor City and Atlantic City to the northeast. The borough also borders Egg Harbor Township.
Streets at the southern end of the borough start at 11th Avenue, as the 180 acres (73 ha) that made up the ten numbered streets below it were washed out on the barrier island by a series of storms between 1900 and 1916. The Great Egg Harbor Inlet shifted north, and Ocean City island was extended by what is now the Gardens neighborhood of that city.
The 2010 United States Census counted 895 people, 470 households, and 252 families in the borough. The population density was 2,323.7 inhabitants per square mile (897.2/km2). There were 1,656 housing units at an average density of 4,299.4 per square mile (1,660.0/km2).