Circuit court of cook county the state of illinois is divided into 22 judicial circuits each circuit is a unified court system in which all trial courts are consolidated under a chief judge the chief judge has centralized administrative authority to coordinate and supervise the functions of the court the circuit court of cook county is not. Organization of the circuit court office of the chief judge court related services office of interpreter services mandatory arbitration for litigant attorneys for people without lawyers forms and publications frequently asked questions locations and contact information becoming a certified arbitrator part 18 rules of the circuit court. State of illinois circuit court of cook county an informational guide on amazoncom free shipping on qualifying offers state of illinois circuit court of cook county an informational guide. Circuit court of cook county 16501 south kedzie parkway markham illinois 60428 criminal courts building circuit court of cook county 2650 south california avenue chicago illinois 60608 additional cook county court location information circuit court clerk information county department chancery division. Illinois circuit court each circuit is administered by a chief judge who is elected by vote of the circuit court judges of that circuit the chief circuit judge is assisted by an administrative assistant and or trial court administrator and other support staff the number of counties in each circuit currently ranges from one to twelve