Every FDIC-insured bank branch in Seneca County, Ohio as of June 30, 2025. County land area: 551 square miles, 3.6 branches per 100 sq mi.
| Institution | Branches | Deposits |
|---|---|---|
| The Old Fort Banking Company | 4 | $402.6M |
| The Croghan Colonial Bank | 2 | $79.3M |
| Sutton Bank | 2 | $1.10B |
| Fifth Third Bank, National Association | 2 | $194.2M |
| The First National Bank of Sycamore | 2 | $71.9M |
| First Bank of Ohio | 2 | $146.9M |
| Woodforest National Bank | 1 | $2.1M |
| PNC Bank, National Association | 1 | $79.4M |
| U.S. Bank National Association | 1 | $70.2M |
| The Huntington National Bank | 1 | $53.8M |
| WesBanco Bank, Inc. | 1 | $118.7M |
| The Republic Banking Company | 1 | $47.7M |