List of Sonic Stores in Lancaster, SC Outlet Note Regular Brands Sonic South Carolina Lancaster 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 Drive-In outlet - Lancaster 1501 Highway 9 Byp W (803) 285-7288 Sonic outlet - Lancaster 1501 Highway 9 By-Pass West (803) 285-7288 People Also Viewed