The history of Cleveland County, Oklahoma refers to the history of a county in the U.S. state of Oklahoma, and the land on which it developed prior to 1907 statehood. Prior to European colonization, the land represented the edge of the domain of the Plains Indians. France and Spain both colonized and explored the area before it became part of the United States via the Louisiana Purchase. It became part of the territory of the United States and tribal land and eventually part of the U.S. state of Oklahoma.
