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Chickasaw Nation
South-central Oklahoma’s Chickasaw homeland, governed from Ada
The Chickasaw Nation's reservation covers about 7,650 square miles of south-central Oklahoma, between the Red River and the Arbuckle Mountains. The Chickasaw ceded their Mississippi homeland in the Treaty of Pontotoc Creek in 1832 and were removed west, first settling among the Choctaw before adopting their own constitution in 1856. Their historic capital was Tishomingo, and since 1975 the Nation has been headquartered in Ada. It has nearly 83,000 citizens.
In 2021 an Oklahoma appeals court applied McGirt v. Oklahoma to confirm that the Chickasaw reservation was never dissolved. The Nation runs more than 100 businesses, including WinStar World Casino and Remington Park racetrack, whose revenue funds hundreds of tribal programs, and it opened the Chickasaw Cultural Center at Sulphur in 2010. In June 2026, after nearly four decades in office, Governor Bill Anoatubby retired, and his son, Lieutenant Governor Chris Anoatubby, became governor.