Mickleton is an unincorporated community and census-designated place located within East Greenwich Township in Gloucester County, in the U.S. state of New Jersey. The area is served as United States Postal Service ZIP Code 08056. As of the 2000 U.S. census, the population for ZIP Code Tabulation Area 08056 was 2,469. With major suburban housing development since then, Mickleton along with the rest of East Greenwich has experienced a major population boom.