The restaurant was created by company founder Troy Smith in 1953. The headquarters for Sonic is located in Oklahoma City, Oklahoma. There are 3,561 restaurants in 43 U.S. states which serve approximately 3 million customers per day as of August 31, 2011. In 2011, the restaurant was ranked at #10 on QSR Magazine’s rankings of the top 50 quick-service and fast-casual restaurant brands in the nation.