65 ILCS 5/11-5-1.5
It is prohibited within a municipality to locate an adult entertainment facility within 1,000 feet of the property boundaries of any school, day care center, cemetery, public park, forest preserve, public housing, and place of religious worship, except that in a county with a population of more than 800,000 and less than 2,000,000 inhabitants, it is prohibited to locate, construct, or operate a new adult entertainment facility within one mile of the property boundaries of any school, day care center, cemetery, public park, forest preserve, public housing, or place of religious worship located anywhere within that county. Notwithstanding any other requirements of this Section, it is also prohibited to locate, construct, or operate a new adult entertainment facility within one mile of the property boundaries of any school, day care center, cemetery, public park, forest preserve, public housing, or place of religious worship located in that area of Cook County outside of the City of Chicago.
For the purposes of this Section, "adult entertainment facility" means (i) a striptease club or pornographic movie theatre whose business is the commercial sale, dissemination, or distribution of sexually explicit material, shows, or other exhibitions or (ii) an adult bookstore or adult video store in which 25% or more of its stock-in-trade, books, magazines, and films for sale, exhibition, or viewing on-premises are sexually explicit material.
65 ILCS 5/11-5-1.5