Guarantee State Bank
- Provides checking, savings, loans, business accounts, and internet banking services from its headquarters in Mangum and locations in Granite, Lawton, and Willow.
- http://www.guaranteestatebank.com/

Arvest Bank
- Provides personal, small business, and corporate services at its branches in Bartlesville, Broken Arrow, Choctaw, Del City, Dewey, Duncan, Edmond, Jay, Kansas, Lawton, Norman, Nowata, Oklahoma City, Owasso, Sapulpa, Shawnee, Stilwell, Tulsa, Walters, West
- http://www.arvest.com

City National Bank
- Provides checking, savings, retirement, CD, and investment services in Lawton with branches in Bartlesville, Duncan, El Reno, Miami, Oklahoma City, Ponca City, Sallisaw, and Tulsa.
- http://www.cnbok.com/

BancFirst
- Provides personal and commercial banking services including internet banking in Oklahoma City with branches in Ardmore, Blackwell, Braman, Chattanooga, Coweta, Davenport, Duncan, Edmond, Frederick, Glenpool, Guthrie, Harrah, Hobart, Hugo, Jenks, Kingfishe
- http://www.bancfirst.com/