45 ILCS 165/10: Jurisdiction.

Adams, Brown, Cass, Hancock, Pike, Schuyler, Henderson, Warren, Morgan, Mercer, and Scott Counties in Illinois and any additional counties that may be added to the Mid-America Intermodal Authority Port District are included in the jurisdiction of the Mid-America Port Commission. Any territory that is disconnected from the Mid-America Intermodal Authority Port District shall cease to be under the jurisdiction of the Mid-America Port Commission.