515 ILCS 5/20-15
The owners or bona fide tenants of lands, actually residing on the lands and their children, parents, brothers, and sisters actually permanently residing with them have the right to take with a sport fishing device fish of the kind permitted to be taken or caught under this Code from waters lying upon or flowing over the lands without procuring licenses to do so. This exemption does not apply to club lakes, organizational lakes, or lake developments. Any individual on active duty with the armed forces of the United States who is now and was at the time of entering the Armed Forces a resident of Illinois, who entered the Armed Forces from this State, and who is presently on ordinary or emergency leave from the Armed Forces has the right to catch or take with a sport fishing device fish permitted to be taken or caught by this Code without procuring a license. Any individual exempt from licensure under this Section has only the authority and privileges in taking fish as are provided by this Code. Fishing by an exempt individual may be done only during seasons when it is lawful.
515 ILCS 5/20-15