There are nearly 6,000 Circle K convenience stores operating in the United States and around the world. The chain started in 1951 when Fred Hervey purchased some Kay's Food Stores in El Paso, Texas. Today, the stores typically operate in conjunction with a gas station, such as this Naperville Shell location on Washington Street. Circle K is a full-service convenience store offering soft drinks, coffee, snacks and car products. The store also provides propane gas tanks and fire wood. Western Union money orders can be purchased as well.