This is a list of the Governors of the State of Oklahoma. With an estimated 3,617,316 residents in 2007 and a land area of 68,667 square miles (177,847 km²), Oklahoma is the 28th most populous and 20th-largest state. The state's name is derived from the Choctaw words okla and humma, meaning "red people", and is known informally by its nickname, The Sooner State.