| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | Community Bank, National Association | Bank | 9 | $571.4M | 19.04% |
| 2 | Manufacturers and Traders Trust Company | Bank | 7 | $429.8M | 14.32% |
| 3 | Northwest Bank | Bank | 5 | $355.9M | 11.86% |
| 4 | Lake Shore Bank | Bank | 5 | $334.9M | 11.16% |
| 5 | KeyBank National Association | Bank | 3 | $316.0M | 10.53% |
| 6 | Inner Lakes Federal Credit Union | Credit union | 6 | $155.5M* | 5.18% |
| 7 | Southern Chautauqua Federal Credit Union | Credit union | 10 | $134.8M* | 4.49% |
| 8 | NBT Bank, National Association | Bank | 1 | $126.2M | 4.21% |
| 9 | Western Division Federal Credit Union | Credit union | 1 | $95.1M* | 3.17% |
| 10 | Greater Chautauqua Federal Credit Union | Credit union | 4 | $90.5M* | 3.01% |
| 8 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 | $3.00B | 18 | 66 | Community Bank, National Association | 19.0% | 1,056 |
| 2025 | $2.97B | 18 | 65 | Community Bank, National Association | 18.9% | 1,057 |
| 2024 | $2.90B | 18 | 66 | Community Bank, National Association | 19.3% | 1,087 |
| 2023 | $2.88B | 18 | 65 | Community Bank, National Association | 18.8% | 1,062 |
| 2022 | $2.93B | 18 | 65 | Community Bank, National Association | 18.6% | 1,049 |
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.