| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | American State Bank | Bank | 9 | $1.14B | 40.33% |
| 2 | Peoples Bank | Bank | 3 | $563.4M | 19.97% |
| 3 | Iowa State Bank | Bank | 3 | $417.7M | 14.80% |
| 4 | Premier Bank | Bank | 1 | $295.2M | 10.46% |
| 5 | The Security National Bank of Sioux City, Iowa | Bank | 1 | $153.1M | 5.43% |
| 6 | Northwest Bank | Bank | 1 | $98.2M | 3.48% |
| 7 | Primebank | Bank | 1 | $72.9M | 2.58% |
| 8 | Rivers Edge Bank | Bank | 1 | $57.0M | 2.02% |
| 9 | Citizens State Bank | Bank | 1 | $26.0M | 0.92% |
| Year | Deposits | Institutions | Branches | Leader | Top share | HHI |
|---|---|---|---|---|---|---|
| 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 | $2.24B | 8 | 20 | American State Bank | 45.0% | 2,775 |
| 2022 | $2.08B | 8 | 19 | American State Bank | 41.6% | 2,579 |
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.