| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | First Interstate Bank | Bank | 2 | $458.7M | 35.24% |
| 2 | Wyoming Community Bank | Bank | 3 | $234.3M | 18.00% |
| 3 | Grand Altitude Federal Credit Union | Credit union | 3 | $190.7M* | 14.65% |
| 4 | Central Bank and Trust | Bank | 3 | $149.3M | 11.48% |
| 5 | Wells Fargo Bank, National Association | Bank | 1 | $86.4M | 6.64% |
| 6 | Meridian Trust Federal Credit Union | Credit union | 1 | $69.7M* | 5.36% |
| 7 | NBH Bank | Bank | 1 | $65.9M | 5.07% |
| 8 | BMO Bank National Association | Bank | 2 | $46.3M | 3.56% |
* Credit-union deposits are estimated (June total shares spread evenly across branches).
| Year | Deposits | Institutions | Branches | Leader | Top share | HHI |
|---|---|---|---|---|---|---|
| 2026 | $1.30B | 8 | 16 | First Interstate Bank | 35.2% | 2,023 |
| 2025 | $1.30B | 8 | 16 | First Interstate Bank | 37.5% | 2,127 |
| 2024 | $1.23B | 9 | 17 | First Interstate Bank | 34.2% | 1,900 |
| 2023 | $1.26B | 9 | 17 | First Interstate Bank | 33.9% | 1,896 |
| 2022 | $1.30B | 9 | 17 | First Interstate Bank | 34.2% | 1,874 |
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.