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 2020 census, Tavistock's population was the second-smallest municipal population in the state of New Jersey; Walpack Township had a population of 7.
Tavistock was incorporated as a borough by an act of the New Jersey Legislature on February 16, 1921. Its territory was drawn from portions of the now-defunct Centre Township. The name of the borough came from the estate in England of a family of early settlers.
