| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | Prosperity Bank | Bank | 6 | $1.39B | 46.89% |
| 2 | Wells Fargo Bank, National Association | Bank | 2 | $500.6M | 16.92% |
| 3 | Texas Dow Employees Credit Union | Credit union | 3 | $356.7M* | 12.06% |
| 4 | Frost Bank | Bank | 1 | $154.5M | 5.22% |
| 5 | Cal-Com Federal Credit Union | Credit union | 2 | $132.3M* | 4.47% |
| 6 | NewFirst National Bank | Bank | 1 | $124.4M | 4.21% |
| 7 | TrustTexas Bank, SSB | Bank | 2 | $112.0M | 3.78% |
| 8 | The First State Bank | Bank | 1 | $41.2M | 1.39% |
| 9 | First National Bank in Port Lavaca | Bank | 1 | $27.9M | 0.94% |
| 10 | Crossroads Bank | Bank | 1 | $27.4M | 0.93% |
| 11 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 | $2.96B | 21 | 34 | Prosperity Bank | 46.9% | 2,715 |
| 2025 | $2.91B | 19 | 32 | Prosperity Bank | 43.0% | 2,391 |
| 2024 | $2.85B | 19 | 32 | Prosperity Bank | 42.7% | 2,415 |
| 2023 | $2.87B | 19 | 32 | Prosperity Bank | 42.6% | 2,426 |
| 2022 | $3.07B | 20 | 34 | Prosperity Bank | 43.9% | 2,518 |
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.