| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | Idaho Central Credit Union | Credit union | 22 | $4.45B* | 18.12% |
| 2 | U.S. Bank National Association | Bank | 17 | $3.43B | 13.95% |
| 3 | Wells Fargo Bank, National Association | Bank | 11 | $3.23B | 13.12% |
| 4 | JPMorgan Chase Bank, National Association | Bank | 10 | $1.27B | 5.18% |
| 5 | Zions Bancorporation, N.A. | Bank | 4 | $1.08B | 4.39% |
| 6 | Washington Trust Bank | Bank | 4 | $972.4M | 3.96% |
| 7 | KeyBank National Association | Bank | 8 | $968.1M | 3.94% |
| 8 | Idaho First Bank | Bank | 2 | $910.0M | 3.70% |
| 9 | First Interstate Bank | Bank | 10 | $803.2M | 3.27% |
| 10 | Mountain America Federal Credit Union | Credit union | 4 | $752.0M* | 3.06% |
| 33 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 | $24.58B | 43 | 181 | Idaho Central Credit Union | 18.1% | 847 |
| 2025 | $22.90B | 43 | 180 | Idaho Central Credit Union | 18.1% | 866 |
| 2024 | $20.84B | 39 | 176 | Idaho Central Credit Union | 17.5% | 907 |
| 2023 | $22.31B | 39 | 179 | Idaho Central Credit Union | 23.4% | 1,119 |
| 2022 | $23.38B | 37 | 177 | Idaho Central Credit Union | 21.4% | 1,075 |
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.