| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | Armstrong Bank | Bank | 4 | $438.1M | 24.07% |
| 2 | Firstar Bank | Bank | 3 | $416.1M | 22.85% |
| 3 | BOKF, National Association | Bank | 2 | $265.4M | 14.58% |
| 4 | BancFirst | Bank | 2 | $236.4M | 12.98% |
| 5 | Arvest Bank | Bank | 2 | $111.5M | 6.13% |
| 6 | Ttcu Federal Credit Union | Credit union | 1 | $103.7M* | 5.70% |
| 7 | Mabrey Bank | Bank | 2 | $95.5M | 5.25% |
| 8 | Communication Federal Credit Union | Credit union | 1 | $86.0M* | 4.72% |
| 9 | Muskogee Federal Credit Union | Credit union | 2 | $66.0M* | 3.62% |
| 10 | The City National Bank and Trust Company of Lawton, Oklahoma | Bank | 1 | $2.0M | 0.11% |
| 1 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 | $1.82B | 11 | 21 | Armstrong Bank | 24.1% | 1,616 |
| 2025 | $1.72B | 11 | 22 | Armstrong Bank | 22.9% | 1,439 |
| 2024 | $1.86B | 11 | 22 | Armstrong Bank | 23.7% | 1,554 |
| 2023 | $1.80B | 11 | 22 | Firstar Bank | 21.1% | 1,479 |
| 2022 | $1.75B | 10 | 21 | Armstrong Bank | 21.3% | 1,391 |
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.