| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | American State Bank | Bank | 9 | $1.11B | 37.86% |
| 2 | Peoples Bank | Bank | 3 | $632.3M | 21.56% |
| 3 | Iowa State Bank | Bank | 3 | $456.7M | 15.57% |
| 4 | Premier Bank | Bank | 1 | $316.1M | 10.78% |
| 5 | The Security National Bank of Sioux City, Iowa | Bank | 1 | $155.5M | 5.30% |
| 6 | Northwest Bank | Bank | 1 | $97.6M | 3.33% |
| 7 | Primebank | Bank | 1 | $78.1M | 2.66% |
| 8 | Rivers Edge Bank | Bank | 1 | $61.2M | 2.09% |
| 9 | Citizens State Bank | Bank | 1 | $24.7M | 0.84% |
| Year | Deposits | Institutions | Branches | Leader | Top share | HHI |
|---|---|---|---|---|---|---|
| 2026 | $2.93B | 9 | 21 | American State Bank | 37.9% | 2,308 |
| 2025 | $2.82B | 9 | 21 | American State Bank | 40.3% | 2,407 |
| 2024 | $2.59B | 9 | 21 | American State Bank | 39.9% | 2,414 |
| 2023 | $2.38B | 9 | 21 | American State Bank | 42.4% | 2,496 |
| 2022 | $2.22B | 9 | 20 | American State Bank | 39.0% | 2,308 |
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.