Contact Us

The Office of Inspector General can be reached in a number of ways. If you would like to report fraud, waste, and abuse, you can fill out our secure online form or call our OIG Tipline at (866) 448-4754. You can also contact us in the following ways:

General Contact:

Main line: (773) 478-7799
TTY: (773) 478-2066
Fax: (773) 478-3949

Mailing Address:
City of Chicago Office of Inspector General
740 N. Sedgwick, Suite 200
Chicago, Illinois 60654-2996

Hours of Operation:
Monday through Friday, 8:30 a.m. to 5:00 p.m.

Press Contact:

Phone: (773) 478-8417

Accessibility Contact


Additional Frequently Requested Agencies and Departments

311 – Various City Services
911 – Emergencies
Administrative Hearings – City Issued Citations and Tickets
Chicago Housing Authority OIG – CHA Programs
Chicago Park District OIG – Park District Programs
Chicago Public Schools OIG – Public/Charter Schools and CPS Programs
City Colleges of Chicago OIG – City Colleges Programs
Cook County Clerk of the Circuit Court OIG – County Clerk Programs
Cook County OIIG – Various Cook County Departments
Cook County Sheriff CIG – Various Suburban Municipalities
Department of Buildings – Buildings Complaints and Inspections
FBI Internet Crime Complaint Center (IC3) – Internet Crimes and Scams
Illinois Department of Human Services OIG – State Mental Health and Disability Programs
Illinois Healthcare and Family Services OIG – Medicaid, TANF, SNAP, Social Services, etc.
Illinois OEIG – Various Illinois Departments, CTA, and Metra
Illinois Tollway OIG – Illinois Tollway Programs
Secretary of State OIG – SOS Programs