| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | Idaho Central Credit Union | Credit union | 2 | $405.0M* | 31.15% |
| 2 | The Bank of Commerce | Bank | 2 | $333.7M | 25.67% |
| 3 | Zions Bancorporation, N.A. | Bank | 1 | $119.5M | 9.19% |
| 4 | Westmark Credit Union | Credit union | 1 | $92.4M* | 7.11% |
| 5 | Wells Fargo Bank, National Association | Bank | 2 | $83.5M | 6.42% |
| 6 | D. L. Evans Bank | Bank | 1 | $58.4M | 4.50% |
| 7 | KeyBank National Association | Bank | 1 | $49.1M | 3.78% |
| 8 | Frontier Credit Union | Credit union | 1 | $43.4M* | 3.34% |
| 9 | Lookout Federal Credit Union | Credit union | 1 | $40.2M* | 3.09% |
| 10 | Ireland Bank | Bank | 1 | $29.5M | 2.27% |
| 3 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 | $1.30B | 13 | 16 | Idaho Central Credit Union | 31.1% | 1,870 |
| 2025 | $1.23B | 13 | 16 | Idaho Central Credit Union | 30.6% | 1,808 |
| 2024 | $1.23B | 14 | 17 | Idaho Central Credit Union | 28.3% | 1,656 |
| 2023 | $1.40B | 14 | 17 | Idaho Central Credit Union | 37.3% | 2,005 |
| 2022 | $1.21B | 14 | 16 | Idaho Central Credit Union | 24.5% | 1,462 |
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.