Winslow Township is a township in Camden County, New Jersey, United States. As of the 2010 United States Census, the township's population was 39,499, reflecting an increase of 4,888 from the 34,611 counted in the 2000 Census, which had in turn increased by 4,524 from the 30,087 counted in the 1990 Census.Winslow Township was incorporated as a township by an act of the New Jersey Legislature on March 8, 1845, from portions of Gloucester Township. Portions of the township were taken on November 26, 1867, to create Chesilhurst. In 1950, the township annexed a portion of Monroe Township.