20231027 11501800 1.0 TRUE DuPage County Board Districts A feature class wich defines the county board election districts within DuPage County, Illinois. The districts were updated in 2010 with the help of an outside contractor: The data is based on the 2010 United States Decennial Census. Election Data Services (http://www.electiondataservices.com/). DuPage County Information Technology Department, GIS Division 630-407-5000