| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | Prosperity Bank | Bank | 1 | $164.7M | 76.69% |
| 2 | Sundown State Bank | Bank | 1 | $42.6M | 19.83% |
| 3 | Brownfield Federal Credit Union | Credit union | 2 | $7.5M* | 3.48% |
* Credit-union deposits are estimated (June total shares spread evenly across branches).
| Year | Deposits | Institutions | Branches | Leader | Top share | HHI |
|---|---|---|---|---|---|---|
| 2026 | $214.7M | 3 | 4 | Prosperity Bank | 76.7% | 6,287 |
| 2025 | $222.8M | 3 | 3 | Prosperity Bank | 79.4% | 6,613 |
| 2024 | $234.8M | 3 | 4 | Prosperity Bank | 82.6% | 7,033 |
| 2023 | $271.4M | 4 | 4 | Lone Star State Bank Of West Texas | 60.3% | 4,409 |
| 2022 | $301.8M | 4 | 4 | Lone Star State Bank Of West Texas | 64.7% | 4,779 |
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.