Hire a Private Investigator in Illinois

Following are private investigators and investigation agencies in the state of Illinois. Before you hire a private investigator in Illinois, contact the appropriate state licensing authority to confirm current license information. To verify a license for the state, please get in touch with the Illinois Department of Financial & Professional Regulation at 320 West Washington Street, 3rd Floor, Springfield, IL 62786.

To learn more about hiring a professional PI firm near you and get more details on the costs involved, read our article Tips for hiring an investigator.

Please let us know if you have any questions before hiring a private investigator in Illinois.

About Illinois

Illinois, in the American Midwest, is the fifth-most populous state. Chicago, its largest city, is a global financial hub. It’s a major agricultural producer known for diverse landscapes, including fertile farmland. Landmarks like Millennium Park and Route 66 draw tourists. Springfield is the capital, and cultural richness abounds.