Westville is a borough in Gloucester County, New Jersey, United States. As of the 2010 United States Census, the borough's population was 4,288, reflecting a decline of 212 from the 4,500 counted in the 2000 Census, which had in turn declined by 73 from the 4,573 counted in the 1990 Census. 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. Legislation had been passed in 1900 to create Westville, but it had to have a majority vote in favor of the new municipality in both Deptford and West Deptford. The borough was named for Thomas West, who built a home in the area in 1775 that still stands.