Westville is a Borough in Gloucester County, New Jersey, USA. As of the United States 2000 Census, the borough population was 4,501. The Borough of Westville is known as "The Gateway to South Jersey. " Westville was formed as a borough by an Act of the New Jersey Legislature on April 7, 1914, from portions of Deptford Township and West Deptford Township, based on the results of a referendum held on April 28, 1914. The borough was reincorporated on March 8, 1924.