Mount Prospect, IL Public Conduct: Loitering Rules (2026)

The Village of Mount Prospect regulates loitering through two targeted sections of Chapter 23 rather than a blanket ban on standing in public. Section 23.608 makes it unlawful to loiter, loaf, wander, stand or remain idle, alone or in consort with others, in a public place for the purpose of recruiting others for membership in a street gang or for participation in gang-related or other criminal activities. The purpose element is the core of the offense: idle presence alone, with no recruiting purpose, is outside the text.

Section 23.609 covers loitering tied to drugs. Subsection A bars loitering in a public place in a manner and under circumstances manifesting the purpose of illegally using, possessing, transferring, buying or selling any cannabis or controlled substance. Subsection B lists two circumstances that count toward that purpose. The first is being a known illegal user, possessor or seller, or loitering in a place frequented by such persons. The second is repeatedly passing to or receiving from passersby, on foot or in a motor vehicle, money, objects or written material that appear to an experienced investigator to be for inducing, enticing, soliciting or procuring another to illegally possess, transfer or buy. When those circumstances are absent, subsection C requires a specific intent to induce, entice, solicit or procure another.

Subsection E defines a known illegal user, possessor or seller as a person who, within one year before the date of arrest, was convicted of illegally manufacturing, using, possessing, selling, purchasing or delivering a controlled substance. Subsection D adds a procedural limit: a peace officer cannot arrest under Section 23.609 unless the officer first offers the person an opportunity to explain the suspicious conduct. Section 23.610 separately lets a peace officer stop a person wearing known gang colors, emblems or insignia when the officer reasonably suspects an offense, and demand the person's name, address and an explanation.