Chickasaw Nation
PO Box 1548
Ada, Oklahoma  74820

The Chickasaw Nation's jurisdictional territory includes 7,648 square miles of south-central Oklahoma and encompasses all or parts of 13 Oklahoma counties.

1. Grady County 8. Johnston County
2. McClain County 9. Jefferson County
3. Garvin County 10. Love County
4. Pontotoc County 11. Marshall County
5. Stephens County 12. Bryan County
6. Carter County 13. Coal County
7. Murray County