Tavistock is a borough in Camden County, in the U.S. state of New Jersey. As of the 2020 United States census, the borough's population was 9, an increase of 4 (+80.0%) from the 2010 census count of 5, which in turn reflected a decline of 19 (−79.2%) from the 24 counted in the 2000 census. As of the 2010 Census it was the smallest municipality by population in New Jersey, with seven fewer residents than nearby Pine Valley, which had 12, while the 2020 census placed Tavistock as second-smallest by population, two more than Walpack Township, New Jersey, which had a population of 7.

Camden County is a county located in the U.S. state of New Jersey. Its county seat is Camden. As of the 2020 census, the county was the state's ninth-most populous county, with a population of 523,485, its highest decennial count ever and an increase of 9,828 (+1.9%) from the 2010 census count of 513,657, which in turn reflected an increase of 4,725 (0.9%) from the 508,932 counted in the 2000 census. The county is part of the South Jersey region of the state.