List of Sonic Stores in Mount Pleasant, SC Outlet Note Regular Brands Sonic South Carolina Mount Pleasant 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 - Mount Pleasant 2880 N Highway 17 (843) 856-3922 Sonic outlet - Mount Pleasant 691 Long Point Rd (843) 971-8874 People Also Viewed