List of Sonic Stores in Winnsboro, SC Outlet Note Regular Brands Sonic South Carolina Winnsboro 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 - Winnsboro 293 US Highway 321 Byp S (803) 712-9898 People Also Viewed