| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | Potlatch No. 1 Financial Credit Union | Credit union | 4 | $263.5M* | 19.63% |
| 2 | Idaho Central Credit Union | Credit union | 1 | $202.5M* | 15.09% |
| 3 | U.S. Bank National Association | Bank | 1 | $165.9M | 12.36% |
| 4 | Wells Fargo Bank, National Association | Bank | 1 | $120.6M | 8.98% |
| 5 | Columbia Bank | Bank | 1 | $102.7M | 7.65% |
| 6 | Twin River Bank | Bank | 2 | $97.7M | 7.28% |
| 7 | Lewis Clark Credit Union | Credit union | 2 | $95.8M* | 7.14% |
| 8 | Banner Bank | Bank | 1 | $90.4M | 6.73% |
| 9 | Washington Trust Bank | Bank | 1 | $76.7M | 5.71% |
| 10 | Zions Bancorporation, N.A. | Bank | 1 | $65.2M | 4.86% |
| 2 more institutions, year-over-year share and branch changes with Pro →$29/mo, cancel any time. | |||||
* Credit-union deposits are estimated (June total shares spread evenly across branches).
| Year | Deposits | Institutions | Branches | Leader | Top share | HHI |
|---|---|---|---|---|---|---|
| 2026 | $1.34B | 12 | 17 | Potlatch No. 1 Financial Credit Union | 19.6% | 1,121 |
| 2025 | $1.29B | 12 | 17 | Potlatch No. 1 Financial Credit Union | 21.0% | 1,160 |
| 2024 | $1.18B | 11 | 16 | Potlatch No. 1 Financial Credit Union | 21.3% | 1,180 |
| 2023 | $1.27B | 11 | 16 | Idaho Central Credit Union | 20.5% | 1,259 |
| 2022 | $1.39B | 11 | 16 | Idaho Central Credit Union | 21.2% | 1,259 |
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.