About the Region U.S. Census Bureau Chicago Regional Office 1111 W. 22nd Street, Suite 400 Oak Brook, IL. 60523-1918 Phone: (630) 288-9200 1-800-865-6384 Fax: (630) 288-9288 TDD: (708) 562-1791 E-mail: chicago.regional.office@census.gov
Source: U.S. Census Bureau Maintained by: Partnership and Data Services Branch fld.pds.web.support@census.gov