St. Clair County, IL Parking Rules: Commercial & Oversized Vehicles (2026)

The St. Clair County Zoning Ordinance lists permitted uses in residential districts (Sec. 40-4) that include 'Off-street parking spaces but not including parking for commercial vehicles or trucks of more than three-quarter (3/4) ton class, camp trailers, motor home and other recreation vehicles or boats, unless parking spaces are specifically provided therefore in the rear yard only in addition to the off-street parking spaces required for dwelling units.' In effect, keeping a heavy commercial truck or semi at a home in a residential district is not a permitted use. Commercial off-street parking areas in business and industrial districts must be paved with an all-weather surface and properly drained (Sec. 40-6-10(E)). Municipalities set their own commercial-vehicle rules within their limits.