| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | Columbia Bank | Bank | 2 | $160.5M | 36.96% |
| 2 | Riverview Bank | Bank | 2 | $137.6M | 31.70% |
| 3 | 1st Security Bank of Washington | Bank | 2 | $112.9M | 26.00% |
| 4 | First Interstate Bank | Bank | 1 | $23.2M | 5.34% |
| Year | Deposits | Institutions | Branches | Leader | Top share | HHI |
|---|---|---|---|---|---|---|
| 2026 | $434.2M | 4 | 7 | Columbia Bank | 37.0% | 3,075 |
| 2025 | $422.6M | 4 | 7 | Columbia Bank | 37.2% | 3,079 |
| 2024 | $431.7M | 4 | 7 | Columbia Bank | 39.5% | 3,162 |
| 2023 | $432.9M | 4 | 7 | Columbia Bank | 38.1% | 3,147 |
| 2022 | $462.2M | 4 | 7 | Columbia Bank | 35.1% | 3,181 |
Every institution above links to its profile — ratios, peer medians and this quarter’s change signals. Pro adds the full table, share movement and CSV export.