The 21st District includes all or part of the communities of Bloomingdale, Carol Stream, Lisle, Naperville, Warrenville, West Chicago, Winfield and Wheaton in DuPage and Will counties.
You can view a larger map of the 21st District by clicking here.
1725 S. Naperville Road,
Wheaton, IL 60189
309 I State House
Springfield, IL 62706
The Illinois State Board of Elections has more more information about state legislative and federal Congressional boundaries.