| LOCATION | MAIN BANK | BRANCH LOCATION |
| Alva | Alva State Bank & Trust Co. | Burlington, Enid |
| Anadarko | First State Bank | Gracemont |
| Ardmore | Citizens Bank | Ardmore, Dickson |
| Atoka | Atoka State Bank | Atoka |
| Beaver | Bank of Beaver City | Forgan, Turpin |
| Beaver | First Security Bank | Beaver |
| Binger | First Community Bank | Eakley, Elk City, Hammon, Hinton |
| Bixby | Citizens Security Bank | Bixby |
| Blair | People State Bank | Lawton |
| Broken Bow | 1st Bank & Trust | Broken Bow, Wright City |
| Buffalo | Oklahoma State Bank | Gage |
| Cashion | Community State Bank | Dover |
| Claremore | RCB Bank | Claremore, Collnsville, Owasso, Skiatook |
| Cleo Springs | Cleo State Bank | Carmon, Jet |
| Depew | Central Oklahoma Bank | Paden |
| Duncan | First Bank & Trust | Duncan, Healdton |
| Durant | Durant Bank & Trust Co. | Calera, Colbert, Hugo, Madill |
| Edmond | American Bank & Trust | Edmond |
| Edmond | Citizens Bank | Edmond |
| Elk City | Bank of Western Oklahoma | Vici |
| El Reno | American Heritage Bank | El Reno |
| Fairfax | First State Bank | Ralston |
| Frederick | First Southwest Bank | Hobart | |
| Grover | Grand Lake Bank | Claremore |
| Guthrie | First Capital Bank | Medford |
| Harrah | First State Bank | Davenport, Holdenville, Meeker, Seminole, Wewoka |
| Hennessey | First Bank of Hennessey | Enid, Guymon, Helena, Marshall, Wakita |
| Hinton | Legacy Bank | Blanchard, Duncan (2) |
| Hobart | Home State Bank | Dill City |
| Holdenville | First United Bank & Trust Co. | Pauls Valley, Seminole, Tecumseh |
| Hollis | First State Bank & Trust Co. | Eldorado, Sayre |
| Hydro | Bank of Hydro | Eakley |
| Idabel | First State Bank | Idabel |
| Jay | Delaware County Bank | Kansas |
| Ketchum | First State Bank | Disney |
| Kremlin | Bank of Kremlin | Enid, Goltry |
| Langley | Bank of the Lakes | Bernice, Collinsville |
| Lawton | Citizens Bank | Lawton (2) |
| Lone Grove | First Community Bank & Trust Co. | Ardmore |
| Mannford | Heritage Bank | Yale |
| Mangum | Guarantee State Bank | Carter, Granite, Willow |
| Miami | Security Bank & Trust Co. | Miami |
| Moore | First State Bank | Mustang |
| Mulhall | Oklahoma State Bank | Coyle, Edmond |
| Norman | Republic Bank | Norman (2) |
| Okemah | Citizens State Bank | Paden |
| Oklahoma City | BancFirst | Coweta, Glenpool, Guthrie, Hugo, Jenks, Kingston, Konawa, Madill, Marlow, McAlester, Muskogee, Norman (2), Oklahoma City (8), Prague, Sand Springs (2), Seminole (2), Shawnee (3), Stillwater, Stratford, Stroud, Sulphur, Tahlequah, Tecumseh, Tishomingo, Tulsa, Weatherford |
| Oklahoma City | Bank One | Oklahoma City (6) |
| Oklahoma City | Community Bank & Trust | Midwest City, Oklahoma City |
| Oklahoma City | First Enterprise Bank | Oklahoma City (2) |
| Oklahoma City | Guaranty Bank & Trust Co. | Oklahoma City (2) |
| Oklahoma City | Southwestern Bank & Trust | Oklahoma City |
| Oklahoma City | UMB Oklahoma Bank | Oklahoma City |
| Oklahoma City | Union Bank & Trust | Edmond, Oklahoma City (4) |
| Owasso | First Bank of Owasso | Owasso |
| Perry | First Bank & Trust Co. | Billings |
| Ponca City | Pioneer Bank & Trust | Ponca City |
| Poteau | Poteau State Bank | Poteau |
| Quinton | Farmers State Bank | Red Oak, Whitefield |
| Roff | Pontotoc County Bank | Byng |
| Shawnee | First State Bank & Trust Co. | Shawnee |
| Skiatook | Exchange Bank | Sperry |
| Spiro | Spiro State Bank | Talihina |
| Thomas | Bank of the West | Clinton |
| Tulsa | American State Bank | Oklahoma City, Tulsa |
| Tulsa | Citizens Bank | Tulsa |
| Tulsa | F & M Bank & Trust Co. | Tulsa (4) |
| Tulsa | Peoples State Bank | Tulsa |
| Tuttle | Sooner State Bank | Konawa, Newcastle |
| Union City | Bank of Union | El Reno |
| Vian | Armstrong Bank | Gore, Muldrow, Muskogee, Stilwell, Tahlequah, Warner, Webber Falls |
| Wagoner | First Bank & Trust Co. | Luther |
| Weatherford | City Bank | Cordell, Corn |
| Westville | Peoples Bank | West Siloam Springs |
| Woodward | First State Bank | Mooreland |
| Woodward | Stock Exchange Bank | Woodward |