305 ILCS 5/12-19.1
In counties of less than 3 million population, the Illinois Department shall appoint 3 members of the County Welfare Services Committee on July 1, 1967; 4 members on July 1, 1968; and 3 members on July 1, 1969, as successors respectively to the members whose terms expire on such dates. In counties of 3 million or more population, the Illinois Department shall appoint 4 members of the Committee on July 1, 1967; 4 on July 1, 1968; and 4 on July 1, 1969, as successors respectively to the members whose terms expire on such dates, and shall on July 1, 1971, appoint 25 members, 7 of whom shall serve for a term of 1 year, 7 of whom shall serve for 2 years, and 11 of whom shall serve for 3 years as designated by the Illinois Department at the time of appointment. Thereafter, upon the expiration of any term, successors shall be appointed in like manner as the original appointees, for a term of 3 years and until their successors are appointed. Vacancies in office shall be filled in like manner as original appointments but appointment shall be only for the remainder of the term of the vacancy.
305 ILCS 5/12-19.1