Family-owned Clark Oil Co. operates 47 Clark's Food Stores in southern Mississippi and southern Alabama. The chain provides customers with an excellent service experience each time they walk into any of the locations, the company says. It partners with Church's Chicken for a foodservice concept in some locations.

For benchmarking purposes, store counts are year-end 2019.

Headquarters:Waynesboro, Mississippi
No. of Stores:47
Rank Last Year:130