If your complaint involves unlawful political discrimination, please see
If you would like to report a political contact (Political Contact Log), please see
Complaints are submitted to the OIIG via:
ONLINE: Submit Complaint Online
FAX: (312) 603-9744
MAIL: 69 W. Washington Street, Suite 1160, Chicago, IL 60602
PRINT COMPLAINT FORM: A complaint form can be printed and completed for mail or fax submission OR call the Complaint Hotline to request one be sent to you.
COMPLAINT HOTLINE: 877-IGTIPLN (877-448-4756) or (312) 603-0745
Please be sure to speak slowly and clearly when leaving your information.
BY APPOINTMENT: to schedule an appointment to file a complaint in person call: (312) 603-0350
Please include as much information as possible in your complaint, as this assists with investigating the issue.
If you have questions regarding the OIIG or have any questions regarding a possible complaint involving Cook County government, please contact us and a Cook County OIIG Investigator will be in contact with you.
69 W. Washington