Commercial Township is a township in Cumberland County, New Jersey, United States. It is part of the Vineland-Millville-Bridgeton Primary Metropolitan Statistical Area for statistical purposes. As of the 2010 United States Census, the township's population was 5,178, reflecting a decline of 81 (−1.5%) from the 5,259 counted in the 2000 Census, which had in turn increased by 233 (+4.6%) from the 5,026 counted in the 1990 Census.