West Deptford Township is a township in Gloucester County, New Jersey, United States. As of the 2010 United States Census, the township's population was 21,677, reflecting an increase of 2,309 (+11.9%) from the 19,368 counted in the 2000 Census, which had in turn declined by 12 (-0.1%) from the 19,380 counted in the 1990 Census.