Sonic Corp. Services | Restaurants | USA Sonic Corp. operates and franchises a chain of quick-service drive-in restaurants in the United States. As of August 31, 2016, the company operated 3,557 Sonic Drive-Ins in 45 states, of which 345 were owned and operated by the company and 3,212 were owned and operated by franchisees. It also leases real estate properties to franchisees. The company was founded in 1953 and is headquartered in Oklahoma City, Oklahoma.
