70 ILCS 1820/16
The Governor shall appoint 3 members of the Board and each County Board of Jackson County and Union County shall appoint 2 members of the Board. All initial appointments shall be made within 60 days after this Act takes effect. Of this amendatory Act of the 97th General Assembly, of the 3 members initially appointed by the Governor one shall be appointed for an initial term expiring June 1, 2014 , and 2 for an initial term expiring June 1, 2015 . Of the 4 members initially appointed by the County Boards, 2 shall be appointed for an initial term expiring June 1, 2014, and 2 for an initial term expiring June 1, 2015. At the expiration of the term of any member, his or her successor shall be appointed by the Governor or the respective County Boards in like manner and with like regard to place of residence of the appointee, as in the case of appointments for the initial terms.
After the expiration of initial terms, each successor shall hold office for the term of 3 years beginning the first day of June of the year in which the term of office commences. In the case of a vacancy during the term of office of any member appointed by the Governor, the Governor shall make an appointment for the remainder of the term vacant and until a successor is appointed and qualified. In case of a vacancy during the term of office of any member appointed by a County Board, the proper County Board shall make an appointment for the remainder of the term vacant and until a successor is appointed and qualified. The Governor and each County Board shall certify their respective appointments to the Secretary of State. Within 30 days after certification of his or her appointment, and before entering upon the duties of his or her office, each member of the Board shall take and subscribe the constitutional oath of office and file it in the office of the Secretary of State.
Every person appointed to the Board after the effective date of this amendatory Act of 1981 shall be a resident of the unit of local government which makes the appointment. Persons appointed by the Governor shall reside in the district.
70 ILCS 1820/16