| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | Isabella Bank | Bank | 10 | $770.9M | 39.44% |
| 2 | Mercantile Bank | Bank | 3 | $345.1M | 17.65% |
| 3 | Isabella Community Credit Union | Credit union | 4 | $159.0M* | 8.14% |
| 4 | Wildfire Credit Union | Credit union | 1 | $152.5M* | 7.80% |
| 5 | Members First Credit Union | Credit union | 2 | $141.7M* | 7.25% |
| 6 | PNC Bank, National Association | Bank | 2 | $132.4M | 6.77% |
| 7 | Lake Trust Credit Union | Credit union | 1 | $106.1M* | 5.43% |
| 8 | Fifth Third Bank, National Association | Bank | 1 | $86.8M | 4.44% |
| 9 | The Huntington National Bank | Bank | 1 | $60.1M | 3.08% |
* Credit-union deposits are estimated (June total shares spread evenly across branches).
| Year | Deposits | Institutions | Branches | Leader | Top share | HHI |
|---|---|---|---|---|---|---|
| 2026 | $1.95B | 9 | 25 | Isabella Bank | 39.4% | 2,151 |
| 2025 | $1.93B | 9 | 25 | Isabella Bank | 38.4% | 2,096 |
| 2024 | $1.88B | 9 | 25 | Isabella Bank | 38.4% | 2,086 |
| 2023 | $1.72B | 9 | 26 | Isabella Bank | 42.1% | 2,318 |
| 2022 | $1.78B | 9 | 26 | Isabella Bank | 43.5% | 2,444 |
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.