Short-term rentals, often referred to locally as "vacation rentals," are legal in Alexander County, Illinois, but they are regulated by a mix of local ordinances rather than a single overarching authority. The market primarily caters to tourists, with properties such as cabins in rural areas being particularly popular due to the county's natural beauty and outdoor recreational opportunities. There is also demand for smaller accommodations such as apartments and single-family homes. Regulations can vary significantly by municipality, but common requirements include obtaining a rental permit and meeting safety and zoning laws. The local government body overseeing these regulations is typically the county or city planning department. For more details, you can visit the official Illinois government site regarding business registrations and permits here and an overview of Airbnb laws in Illinois here.