| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | Northwest Bank | Bank | 1 | $327.8M | 24.05% |
| 2 | GreenState Credit Union | Credit union | 1 | $256.2M* | 18.80% |
| 3 | First Interstate Bank | Bank | 2 | $153.6M | 11.27% |
| 4 | Wells Fargo Bank, National Association | Bank | 1 | $141.4M | 10.37% |
| 5 | Availa Bank | Bank | 1 | $107.8M | 7.91% |
| 6 | Security Savings Bank | Bank | 4 | $69.6M | 5.11% |
| 7 | First State Bank | Bank | 1 | $64.3M | 4.71% |
| 8 | Heartland Bank | Bank | 2 | $61.7M | 4.53% |
| 9 | United Bank of Iowa | Bank | 1 | $54.1M | 3.97% |
| 10 | Citizens Community Credit Union | Credit union | 2 | $50.5M* | 3.70% |
| 2 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 | $1.36B | 12 | 18 | Northwest Bank | 24.1% | 1,343 |
| 2025 | $1.36B | 12 | 19 | Northwest Bank | 23.6% | 1,319 |
| 2024 | $1.38B | 12 | 19 | Northwest Bank | 23.5% | 1,325 |
| 2023 | $1.61B | 12 | 20 | GreenState Credit Union | 30.9% | 1,584 |
| 2022 | $1.65B | 12 | 20 | GreenState Credit Union | 34.0% | 1,721 |
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.