The official page for Big R Rural King Supply Stores. Big R is a member of Mid-States Distributing Company of St. Paul, MN. The Mid-States Coop has over 600 stores throughout the United States and Canada. Big R Rural King Supply was started in 1965 by George Jones in Olney, IL. Later expanding to Mt. Carmel, IL in 1978, Robinson, IL in 1982, Salem, IL in 1986, Highland, IL in 1990, and Swansea, IL in 2010. Big R Rural King Supply is still owned and operated by the Jones family and they would like to invite you in to see what Big R Rural King Supply has to offer.