(65 ILCS 5/3.1-15-20) (from Ch. 24, par. 3.1-15-20)
Sec. 3.1-15-20. Administering oaths. The mayor of a city, the president of a village or incorporated town, the clerk, the chairman of a plan commission, and the chairman of a zoning board of appeals of a municipality have power to administer oaths and affirmations on all lawful occasions. The corporate authorities by ordinance may authorize other municipal officers to administer oaths.
(Source: P.A. 87-1119.)