Every FDIC-insured bank branch in Ottawa County, Oklahoma as of June 30, 2025. County land area: 471 square miles, 3.0 branches per 100 sq mi.
| Institution | Branches | Deposits |
|---|---|---|
| Security Bank and Trust Company | 4 | $131.9M |
| The First National Bank and Trust Company of Miami | 3 | $179.0M |
| Welch State Bank of Welch, Okla. | 2 | $169.0M |
| Method Bank | 1 | $52.8M |
| Grand Savings Bank | 1 | $36.7M |
| The City National Bank and Trust Company of Lawton, Oklahoma | 1 | $3.3M |
| International Bank of Commerce | 1 | $18.8M |
| Arvest Bank | 1 | $146.9M |