How do i contact the illinois office of the comptroller? Illinois Office of Comptroller - Springfield 325 West Adams Springfield, Illinois 62704 (217) 782-6000What is the role of the illinois comptroller? By law, the Comptroller is the state's Chief Fiscal Control Officer, responsible for the legal, efficient, and effective operations of state government. Illinois' first Comptroller, George W. Lindberg, was inaugurated in January 1973. By July 1974, he had initiated the Office's first automated accounting system.What is the office of the illinois treasurer? The Illinois Treasurer oversees the State of Illinois’ investment portfolio and banking transactions. For inquiries on doing business with the Treasurer’s Office, click here.Whats in the illinois office of comptrollers public accountability report? The Illinois Office of Comptroller's Public Accountability Report details the revenues, spending and program goals provided by nearly 80 state agencies.