An individual can obtain someone's criminal record or background by accessing public records. These records can be searched through law enforcement and court websites, as well as at available physical locations.
You can explore publicly accessible records via online law enforcement and court portals or by visiting physical search locations.

Obtain copies of your criminal records through Illinois Legal Aid Online.
For a faster background check, you may conduct a name-based inquiry through criminal records databases.

The Illinois Background Check is managed by the Bureau of Identification.
All collected and maintained information regarding criminal history records by the Illinois State Police's Bureau of Identification should be accessible to the public.