Madison County, IL Sign Regulations: Window Signs (2026)

116, such as the ban on obstructing traffic visibility. A temporary window sign is allowed in every zoning district in the county, so the exemption is not limited to business areas. The size limit is set per building facade: the sign, or combination of signs, cannot occupy more than 25% of the total ground-floor window area on that facade. Coverage is measured facade by facade, so a corner building with windows on two street-facing walls gets a separate 25% allowance for each wall. The display period is capped at 30 days in a calendar year, whether that time is used in a single continuous run or split across several shorter postings; the code does not exempt seasonal or sale signage from that cap.

Because temporary window signs skip the review process, the Zoning Administrator does not pre-approve individual layouts, but a sign left up past the display window or exceeding the 25% coverage limit loses the exemption and can be ordered removed.