| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | Liberty National Bank | Bank | 3 | $239.4M | 30.05% |
| 2 | Premier Bank | Bank | 1 | $148.0M | 18.58% |
| 3 | First Savings Bank | Bank | 1 | $94.7M | 11.88% |
| 4 | Security National Bank of South Dakota | Bank | 1 | $84.5M | 10.60% |
| 5 | Pioneer Bank | Bank | 1 | $64.5M | 8.10% |
| 6 | Central Bank | Bank | 1 | $61.4M | 7.71% |
| 7 | First Dakota National Bank | Bank | 1 | $42.2M | 5.30% |
| 8 | Siouxland Federal Credit Union | Credit union | 1 | $40.2M* | 5.05% |
| 9 | Peoples Bank | Bank | 1 | $12.7M | 1.59% |
| 10 | 1st Financial Bank USA | Bank | 1 | $9.1M | 1.14% |
* Credit-union deposits are estimated (June total shares spread evenly across branches).
| Year | Deposits | Institutions | Branches | Leader | Top share | HHI |
|---|---|---|---|---|---|---|
| 2025 | $796.8M | 10 | 12 | Liberty National Bank | 30.1% | 1,684 |
| 2024 | $884.4M | 10 | 13 | Liberty National Bank | 28.0% | 1,605 |
| 2023 | $804.1M | 10 | 13 | Liberty National Bank | 27.2% | 1,604 |
| 2022 | $825.8M | 9 | 12 | Liberty National Bank | 29.3% | 1,645 |
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.