As of Feb 28, 2017, there are 3,562 restaurants (3,329 franchised and 233 company-operated) in 45 states.

In fiscal 2016, the company opened 1, closed 5 and sold 38 net drive-ins to franchisees, while franchisees also opened 52 and closed 17 drive-ins. During the first half of fiscal 2017, the company opened 24 and closed 19 restaurants, systemwide, in addition to selling 110 corporate-owned restaurants to franchisees. In the third quarter of fiscal 2016, the company announced plans to move toward an approximately 95% franchised system as part of a refranching initiative. Additionally, the company expects 65 to 75 new franchise drive-ins to open by the end of fiscal 2017.

At year end, the company operated 161 of their stores on property leased from third parties and 184 of them on property they own. The company also owns and leases 174 properties and subleases 43 properties to franchisees and other parties.

Sonic Drive-Ins typically consist of a kitchen housed in a one-story building, approximately 1,500 square feet, flanked by canopy-covered rows of 16 to 24 parking spaces. Each parking spot has its own payment terminal, intercom speaker and menu board.

Company-operated restaurants233345387391396409
Company-operated restaurant growth-37.9%-10.9%-1.0%-1.3%-3.2%-8.3%
Franchised restaurants3,3293,2123,1393,1273,1263,147
Franchised restaurant growth5.6%2.3%0.4%0.0%-0.7%1.0%
Systemwide restaurants3,5623,5573,5263,5183,5223,556
Systemwide restaurant growth1.0%0.9%0.2%-0.1%-1.0%-0.1%
Avg restaurant gross sq ft1,5001,5001,5001,5001,5001,500
Avg restaurant gross sq ft growth0.0%0.0%0.0%0.0%0.0%0.0%