Every FDIC-insured bank branch in Sandusky County, Ohio as of June 30, 2025. County land area: 408 square miles, 4.9 branches per 100 sq mi.
| Institution | Branches | Deposits |
|---|---|---|
| The Croghan Colonial Bank | 7 | $468.4M |
| The First National Bank of Bellevue | 3 | $151.5M |
| The Old Fort Banking Company | 2 | $108.9M |
| The Huntington National Bank | 2 | $174.3M |
| The Union Bank Company | 1 | $54.1M |
| KeyBank National Association | 1 | $45.7M |
| The Genoa Banking Company | 1 | $14.0M |
| Woodforest National Bank | 1 | $2.4M |
| U.S. Bank National Association | 1 | $52.5M |
| Fifth Third Bank, National Association | 1 | $97.4M |