Cor Trust Bank Address: 111 Main St S, Mt Vernon, SD 57363 Phone: (605) 236-5211 Hours: Mon: 9am-5pm Tue: 9am-5pm Wed: 9am-5pm Thu: 9am-5pm Fri: 9am-5pm Banks, Mortgages, Loans Other Businesses: Wermers Lounge at 105 S Main St, Mt Vernon, SD 57363