Or by the first letter of a Bank Name
| Headquarters | Date Established | Assets (1000s) | Type | |
|---|---|---|---|---|
| American Bank of Oklahoma | Collinsville, OK | 04-01-1998 | $385,612 | BK |
| The Security National Bank of Enid | Enid, OK | 01-01-1907 | $382,370 | BK |
| McCurtain County National Bank | Broken Bow, OK | 04-23-1982 | $373,956 | BK |
| Security State Bank of Oklahoma | Wewoka, OK | 12-05-1911 | $373,072 | BK |
| Frazer Bank | Altus, OK | 01-01-1902 | $372,679 | BK |
| Bank of Commerce | Duncan, OK | 12-16-2002 | $371,126 | BK |
| FORT SILL | Lawton, OK | 01-01-1956 | $371,068 | CU |
| ALLEGIANCE | OKLAHOMA CITY, OK | 01-01-1963 | $371,023 | CU |
| Watermark Bank | Oklahoma City, OK | 01-22-2019 | $361,836 | BK |
| Anchor D Bank | Texhoma, OK | 02-23-1906 | $361,750 | BK |
| Cowboy Bank | Kremlin, OK | 05-01-1900 | $360,188 | BK |
| ALLEGIANCE | Oklahoma City, OK | 01-01-1963 | $353,842 | CU |
| The Community State Bank | Poteau, OK | 10-19-1970 | $348,542 | BK |
| Citizens Bank of Ada | Ada, OK | 02-20-1967 | $328,265 | BK |
| The Pauls Valley National Bank | Pauls Valley, OK | 01-01-1905 | $325,253 | BK |