Pine Valley is a borough in Camden County, New Jersey, United States. As of the 2010 United States Census, the borough's population was 12, reflecting a decline of 8 (-40.0%) from the 20 counted in the 2000 Census, which had in turn increased by 1 (+5.3%) from the 19 counted in the 1990 Census. As of the 2010 Census Pine Valley was the second-smallest municipality by population in New Jersey, with just seven more residents than the five residing in Tavistock, also in Camden County.