Ill. Admin. Code tit. 20, § 1570.30
a) A criminal justice agency that assists in the processing of criminal conviction information requests pursuant to the Act shall do so as follows:
b) A local criminal justice agency that does not assist in processing a request for conviction information pursuant to the Act shall inform the requester that the conviction information sought can be obtained directly from the Department of State Police at the following address or phone number:
Illinois State Police
Bureau of Identification
260 North Chicago St.
Joliet, Illinois 60431
Telephone number: (815) 740-5160