Town Hall Address 141 West Main St. Williamsville, IL 62693 United States- Sangamon County Website http://williamsville.illinois.gov/ Zoning 217-566-3806 141 West Main St. Williamsville, IL 62693 United States Fire District 217-566-3311 9850 Revere Rd. Williamsville, IL 62693 United States Town Clerk 217-566-3806 141 West Main St. Williamsville, IL 62693 United States Water 217-566-3806 141 West Main St. Williamsville, IL 62693 United States Sewer 217-566-3806 141 West Main St. Williamsville, IL 62693 United States Tax Collector 217-566-3806 141 West Main St. Williamsville, IL 62693 United States Code Enforcement 217-566-3806 141 West Main St. Williamsville, IL 62693 United States Town Hall Hours Monday - Friday: 7:30 A.M. - 3:30 P.M., Closed For Lunch: 11:30 A.M. - 12:30 P.M. County Sangamon