List of Sonic Stores in Union, MO Outlet Note Regular Brands Sonic Missouri Union Rating 4.5 based on 91 votes Official Website https://www.sonicdrivein.com/ Products Snacks Ice Cream Drinks Chicken Hot Dogs Burgers NameAddressPhone Name/Address/Phone Sonic outlet - Union 3 Highway 50 West (636) 583-8244 People Also Viewed