Prairie State Bank & Trust Address: 345 Mary St, Illiopolis, IL 62539 Phone: (217) 486-2721 Hours: Mon: 9am-5pm Tue: 9am-5pm Wed: 9am-5pm Thu: 9am-5pm Fri: 9am-5pm Banks Other Businesses: Bunkers LLC at 220 Old Route 36, Illiopolis, IL 62539 Uncle Monkey's at 100 Dye Rd, Illiopolis, IL 62539