St. Clair County sets no dedicated guest-count cap for short-term rentals. Occupancy is governed by the building/property-maintenance code's habitable-space standards and by any city rules. Unincorporated rentals must pass a county occupancy inspection before use.
The county does not publish a specific short-term rental headcount limit. In practice, maximum occupancy is driven by adopted building and property-maintenance code standards on minimum floor area per occupant, bedroom size, and safe egress, verified through the county's occupancy inspection for unincorporated residential property. Municipalities that regulate STRs may impose their own hard guest caps (often tied to number of bedrooms). Hosts should confirm the maximum safe occupancy at inspection and follow any city ordinance if the property lies inside a municipality's limits.
Overcrowding beyond code-based habitable-space standards is a property-maintenance/building violation subject to correction orders and denial of the occupancy certificate.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
St. Clair County, IL
St. Clair County has no rule against backyard composting. Statewide, Illinois bans landscape waste (leaves, grass, brush) from sanitary landfills under 415 I...
St. Clair County, IL
St. Clair County has no ordinance addressing artificial turf, so installing synthetic grass in an unincorporated yard is not prohibited. Drainage, setbacks a...
St. Clair County, IL
St. Clair County has no ordinance requiring or restricting native plants or prairie/naturalized landscaping. The only limit is the weed nuisance rule: plants...
St. Clair County, IL
St. Clair County has no rainwater ordinance. Illinois' Rainwater Capture Act allows capturing and reusing rainwater for non-potable uses statewide. Systems m...
St. Clair County, IL
St. Clair County imposes no countywide lawn-watering or drought restrictions. Any watering limits come from your water utility (largely Illinois American Wat...
St. Clair County, IL
St. Clair County Code Chapter 25 names specific weeds (ragweed, thistle, poison ivy, Johnson grass and others) and declares them a nuisance on unincorporated...
See how Fairview Heights's occupancy limits rules stack up against other locations.
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