Every FDIC-insured bank branch in Whitman County, Washington as of June 30, 2025. County land area: 2,159 square miles, 0.8 branches per 100 sq mi.
| Institution | Branches | Deposits |
|---|---|---|
| State Bank Northwest | 3 | $33.3M |
| U.S. Bank National Association | 3 | $205.7M |
| First Interstate Bank | 2 | $27.5M |
| Bank of Eastern Oregon | 2 | $22.5M |
| Umpqua Bank | 2 | $147.5M |
| Banner Bank | 2 | $109.1M |
| Washington Trust Bank | 1 | $78.9M |
| Washington Federal Bank | 1 | $58.6M |
| JPMorgan Chase Bank, National Association | 1 | $126.7M |
| Lamont Bank of St. John | 1 | $52.1M |