Tavistock is a borough in Camden County, New Jersey, United States. As of the 2010 United States Census, the population was 5, reflecting a decline of 19 (-79.2%) from the 24 counted in the 2000 Census, which had in turn declined by 11 (-31.4%) from the 35 counted in the 1990 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.
Tavistock was incorporated as a borough by an Act of the New Jersey Legislature on February 16, 1921, from portions of the now-defunct Centre Township.
Tavistock was formed for the purpose of allowing the members of Tavistock Country Club the ability to play golf on Sundays. This was prohibited at the Haddon Country Club which was governed by a local blue law prohibiting sporting activities on Sundays. Tavistock's secession from Haddonfield, New Jersey, the original site of the club, is said to have been driven by the fact that Haddonfield was (and remains) a dry borough, though Tavistock was formed in 1921 during Prohibition when liquor would have been banned.