Town Hall Address PO Box 4 Rio, IL 61472 United States- Knox County Zoning 309-345-3840 Knox County Annex-Suite 1 121 South Prairie Street Galesburg, IL 61401 United States Fire District 309-972-5631 304 E Center Ave Rio, IL 61472 United States Town Clerk 309-972-2471 PO Box 4 Rio, IL 61472 United States Tax Collector 309-345-3863 200 South Cherry Street Galesburg, IL 61401 United States Code Enforcement 309-972-2471 PO Box 4 Rio, IL 61472 United States County Knox