| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | Isabella Bank | Bank | 3 | $173.1M | 30.21% |
| 2 | The Huntington National Bank | Bank | 2 | $160.8M | 28.07% |
| 3 | Members First Credit Union | Credit union | 2 | $141.7M* | 24.73% |
| 4 | Mercantile Bank | Bank | 1 | $97.3M | 16.98% |
* Credit-union deposits are estimated (June total shares spread evenly across branches).
| Year | Deposits | Institutions | Branches | Leader | Top share | HHI |
|---|---|---|---|---|---|---|
| 2026 | $573.0M | 4 | 8 | Isabella Bank | 30.2% | 2,600 |
| 2025 | $542.6M | 4 | 8 | Isabella Bank | 31.0% | 2,635 |
| 2024 | $536.5M | 4 | 8 | Isabella Bank | 30.7% | 2,634 |
| 2023 | $525.3M | 4 | 8 | The Huntington National Bank | 29.3% | 2,643 |
| 2022 | $522.8M | 4 | 8 | The Huntington National Bank | 31.6% | 2,750 |
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.