Every FDIC-insured bank branch in Preble County, Ohio as of June 30, 2025. County land area: 424 square miles, 3.8 branches per 100 sq mi.
| Institution | Branches | Deposits |
|---|---|---|
| The Twin Valley Bank | 3 | $115.8M |
| LCNB National Bank | 3 | $161.8M |
| Somerville Bank | 3 | $149.6M |
| The Farmers State Bank | 2 | $43.1M |
| Woodforest National Bank | 1 | $2.3M |
| The Brookville Building and Savings Association | 1 | $5.9M |
| United Midwest Savings Bank, National Association | 1 | $83.3M |
| U.S. Bank National Association | 1 | $76.7M |
| Fifth Third Bank, National Association | 1 | $90.3M |