30 ILCS 720/3
"Department" means the Department of Commerce and Economic Opportunity.
"Governing bodies" means, as to any county, municipality or township, the body empowered to enact ordinances or to adopt resolutions for the governance of such county, municipality or township.
"Industrial development agency" means any nonprofit corporation, organization, association, or agency, including a local school district or community college, which shall be designated by proper resolution of the governing body of any county, concurred in by resolution of the governing bodies of municipalities or townships within said county having in the aggregate over 50% of the population of said county, as determined by the last preceding decennial United States Census, as the agency authorized to make application to and receive grants from the Department of Commerce and Economic Opportunity for the purposes specified in this Act. Any two or more counties may, by the procedures provided in this Act, designate a single industrial development agency to represent such counties for the purposes of this Act.
30 ILCS 720/3