Pine Valley was 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 21, an increase of 9 (+75.0%) from the 2010 census count of 12, which in turn reflected a decline of 8 (-40.0%) from the 20 counted in the 2000 census. As of the 2020 Census, Pine Valley was the third-smallest municipality by population in New Jersey, with 12 more residents than the nine residing in Tavistock and 14 more than the seven in Walpack Township.

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.