| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | American State Bank | Bank | 2 | $173.0M | 49.01% |
| 2 | First National Bank, Ames, Iowa | Bank | 2 | $100.8M | 28.56% |
| 3 | Community 1St Credit Union | Credit union | 1 | $40.9M* | 11.59% |
| 4 | First Interstate Bank | Bank | 1 | $38.3M | 10.85% |
* Credit-union deposits are estimated (June total shares spread evenly across branches).
| Year | Deposits | Institutions | Branches | Leader | Top share | HHI |
|---|---|---|---|---|---|---|
| 2026 | $353.0M | 4 | 6 | American State Bank | 49.0% | 3,470 |
| 2025 | $352.7M | 4 | 6 | American State Bank | 46.0% | 3,356 |
| 2024 | $342.9M | 4 | 6 | American State Bank | 44.2% | 3,229 |
| 2023 | $358.1M | 4 | 6 | American State Bank | 42.7% | 3,171 |
| 2022 | $361.6M | 4 | 6 | American State Bank | 42.0% | 3,166 |
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.