Every FDIC-insured bank branch in Marion County, Ohio as of June 30, 2025. County land area: 404 square miles, 3.0 branches per 100 sq mi.
| Institution | Branches | Deposits |
|---|---|---|
| The First Citizens National Bank of Upper Sandusky | 2 | $69.3M |
| The Fahey Banking Company | 2 | $294.0M |
| The Union Bank Company | 1 | $59.7M |
| The Richwood Banking Company | 1 | $27.6M |
| JPMorgan Chase Bank, National Association | 1 | $178.5M |
| PNC Bank, National Association | 1 | $108.6M |
| The Huntington National Bank | 1 | $140.4M |
| The Park National Bank | 1 | $102.4M |
| Fifth Third Bank, National Association | 1 | $150.5M |
| WesBanco Bank, Inc. | 1 | $92.7M |