| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | Potlatch No. 1 Financial Credit Union | Credit union | 4 | $271.1M* | 21.01% |
| 2 | Idaho Central Credit Union | Credit union | 1 | $188.2M* | 14.58% |
| 3 | U.S. Bank National Association | Bank | 1 | $167.7M | 13.00% |
| 4 | Wells Fargo Bank, National Association | Bank | 1 | $111.2M | 8.62% |
| 5 | Columbia Bank | Bank | 1 | $101.4M | 7.86% |
| 6 | Lewis Clark Credit Union | Credit union | 2 | $90.6M* | 7.02% |
| 7 | Twin River Bank | Bank | 2 | $90.3M | 6.99% |
| 8 | Banner Bank | Bank | 1 | $88.6M | 6.86% |
| 9 | Washington Trust Bank | Bank | 1 | $62.2M | 4.82% |
| 10 | Zions Bancorporation, N.A. | Bank | 1 | $58.7M | 4.55% |
| 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 |
|---|---|---|---|---|---|---|
| 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 | 20.1% | 1,256 |
| 2022 | $1.39B | 11 | 16 | Idaho Central Credit Union | 20.8% | 1,254 |
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.