Every FDIC-insured bank branch in Union County, Ohio as of June 30, 2025. County land area: 432 square miles, 2.5 branches per 100 sq mi.
| Institution | Branches | Deposits |
|---|---|---|
| The Richwood Banking Company | 3 | $730.0M |
| JPMorgan Chase Bank, National Association | 2 | $189.8M |
| The Middlefield Banking Company | 1 | $23.3M |
| First Federal Community Bank of Bucyrus | 1 | $26.2M |
| PNC Bank, National Association | 1 | $80.6M |
| The Huntington National Bank | 1 | $185.8M |
| The Merchants National Bank | 1 | $29.4M |
| Fifth Third Bank, National Association | 1 | $98.3M |