Town Hall Address 109 N Hickory St. Mt. Vernon, MO 65712 United States- Lawrence County Website https://www.mtvernon-cityhall.org/index.php Town Clerk 417-466-2122 109 N Hickory St. Mt. Vernon, MO 65712 United States Tax Collector 417-466-2122 109 N Hickory St. Mt. Vernon, MO 65712 United States Town Hall Hours Monday - Friday: 8:30 AM - 4:30 PM County Lawrence