The main office of the Treasurer is located at the Illinois Statehouse, Room 219, in Springfield, Illinois 62706. The principal branch office is located at One East Old State Capitol Plaza, Springfield, IL 62701. The Chicago branch office is located at 555 West Monroe Street, 14th Floor, Chicago, Illinois. The Treasurer maintains other offices, principally for internal operations of the Treasurer. A list of all current offices is available upon request.
Ill. Admin. Code tit. 2, § 650.115