| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | KeyBank National Association | Bank | 12 | $1.47B | 30.99% |
| 2 | Manufacturers and Traders Trust Company | Bank | 4 | $773.2M | 16.29% |
| 3 | Northwest Bank | Bank | 5 | $623.2M | 13.13% |
| 4 | Cornerstone Community Federal Credit Union | Credit union | 5 | $545.7M* | 11.49% |
| 5 | Bank of America, National Association | Bank | 1 | $313.5M | 6.60% |
| 6 | Niagara's Choice Federal Credit Union | Credit union | 5 | $234.4M* | 4.94% |
| 7 | Citizens Bank, National Association | Bank | 3 | $214.7M | 4.52% |
| 8 | CNB Bank | Bank | 2 | $156.9M | 3.30% |
| 9 | Ontario Shores Federal Credit Union | Credit union | 4 | $133.9M* | 2.82% |
| 10 | NBT Bank, National Association | Bank | 1 | $69.8M | 1.47% |
| 12 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 |
|---|---|---|---|---|---|---|
| 2025 | $4.75B | 22 | 56 | KeyBank National Association | 31.0% | 1,643 |
| 2024 | $4.53B | 23 | 58 | KeyBank National Association | 31.9% | 1,703 |
| 2023 | $4.47B | 23 | 59 | KeyBank National Association | 31.1% | 1,653 |
| 2022 | $4.59B | 23 | 60 | KeyBank National Association | 31.3% | 1,699 |
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.