The Blarney Castle Oil Co. is family-owned and operates convenience stores in Michigan. More than 80 of the chain's stores are branded EZ Mart, while some units and kiosks remain under the fuel brand name. Gasoline brands include BP, Marathon, Mobil, Shell and Sunoco. EZ Mart stores, which average 2,800 to 3,600 square feet, can be divided into two groups, with 60% of the sites in the northern area of the state and the remaining locations in the more populated areas in the southern part of the state.

Blarney Castle has a proprietary food program in several stores called Lucky Louie's, which features pizza, sandwiches, breadsticks, breakfast sandwiches, salads and cinnamon rolls.

The company also offers propane and home heating oil service and commercial fuel and bulk lubricant sales.

For benchmarking purposes, store counts are as of Jan. 1, 2021.

Headquarters:Bear Lake, Michigan
No. of Stores:141
Rank Last Year:48