| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | Prosperity Bank | Bank | 8 | $1.49B | 47.77% |
| 2 | Wells Fargo Bank, National Association | Bank | 2 | $500.6M | 16.02% |
| 3 | Texas Dow Employees Credit Union | Credit union | 3 | $356.7M* | 11.42% |
| 4 | Frost Bank | Bank | 1 | $154.5M | 4.94% |
| 5 | Cal-Com Federal Credit Union | Credit union | 2 | $132.3M* | 4.23% |
| 6 | NewFirst National Bank | Bank | 1 | $124.4M | 3.98% |
| 7 | TrustTexas Bank, SSB | Bank | 2 | $112.0M | 3.58% |
| 8 | The Huntington National Bank | Bank | 1 | $60.6M | 1.94% |
| 9 | The First State Bank | Bank | 1 | $41.2M | 1.32% |
| 10 | First National Bank in Port Lavaca | Bank | 1 | $27.9M | 0.89% |
| 12 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 | $3.12B | 22 | 37 | Prosperity Bank | 47.8% | 2,748 |
| 2025 | $3.10B | 20 | 35 | Prosperity Bank | 42.3% | 2,284 |
| 2024 | $3.04B | 20 | 35 | Prosperity Bank | 41.6% | 2,275 |
| 2023 | $3.07B | 20 | 35 | Prosperity Bank | 41.2% | 2,257 |
| 2022 | $3.28B | 21 | 37 | Prosperity Bank | 42.5% | 2,349 |
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.