Illinois association of county board members
County Officials
Who’s Who in Illinois County Government
There are several elected officials and appointed officials that carry out the functions of county government in Illinois. Most county offices are open to laypersons, while others require special training or professional standing. Some positions have additional requirements and are followed by prerequisites. Inside the Courthouse presents the primary duties of Illinois county government officials including departments and special districts.
Sources:
Illinois Compiled Statutes
Illinois Legislative Reference Bureau
Illinois County Government Law / Illinois State Bar Association