Absecon is a city in Atlantic County, in the U.S. state of New Jersey. As of the 2020 United States census, the city's population was 9,137, its highest decennial count ever and an increase of 726 (+8.6%) from the 2010 census count of 8,411, which in turn reflected an increase of 773 (+10.1%) from the 7,638 counted in the 2000 census.