Branch Presence
Banks with Branches in Buffalo, NY
Manufacturers and Traders Trust Company is the biggest bank in Buffalo, NY, with $36.09B in deposits at its Buffalo branches, 90.6% of the city's total as of the June 30, 2026 FDIC Summary of Deposits.
14 banks operate 61 branches in Buffalo, NY, ranked below by local branch count from the FDIC Summary of Deposits. This counts every bank with a branch here, not only banks headquartered locally.
Deposit share is each bank's share of the $39.85B held in Buffalo, NY, as of the June 30, 2026 FDIC Summary of Deposits, ranked by deposits (#1 is largest). Banks that book deposits at a headquarters branch can show a share that exceeds their local customer base.
| Bank | Branches in Buffalo | Local deposits | Deposit share |
|---|---|---|---|
| Manufacturers and Traders Trust Company | 15 | $36.09B | 90.6% (#1) |
| KeyBank N.A. | 12 | $995.4M | 2.5% (#2) |
| Bank of America, N.A. | 7 | $861.3M | 2.2% (#3) |
| Northwest Bank | 7 | $698.1M | 1.8% (#4) |
| NBT Bank, N.A. | 3 | $300.3M | 0.8% (#5) |
| CNB Bank | 3 | $199.2M | 0.5% (#6) |
| Citizens Bank, N.A. | 3 | $170.0M | 0.4% (#7) |
| Five Star Bank | 3 | $86.4M | 0.2% (#11) |
| JPMorgan Chase Bank, N.A. | 2 | $142.8M | 0.4% (#8) |
| Lake Shore Bank | 2 | $61.7M | 0.2% (#12) |
| Tompkins Bank & Trust | 1 | $106.1M | 0.3% (#9) |
| Chemung Canal Trust Company, N.A. | 1 | $97.9M | 0.2% (#10) |
| Community Bank, N.A. | 1 | $34.8M | <0.1% (#13) |
| Wilmington Trust, N.A. | 1 | — | — |
County deposit market: Erie, NY
The $63.26B held across 20 FDIC-insured banks in this county, as of the June 30, 2026 FDIC Summary of Deposits. The 10 largest are shown; see every bank in the Erie, NY market with its change from a year earlier. Banks only: credit unions are not in the Summary of Deposits.
| Rank | Bank | Deposit share | Deposits | Branches |
|---|---|---|---|---|
| 1 | Manufacturers and Traders Trust Company | 66.2% | $41.86B | 44 |
| 2 | KeyBank N.A. | 9.8% | $6.17B | 42 |
| 3 | HSBC Bank USA, N.A. | 5.4% | $3.39B | 1 |
| 4 | Bank of America, N.A. | 4.3% | $2.74B | 15 |
| 5 | Citizens Bank, N.A. | 3.7% | $2.34B | 20 |
| 6 | Northwest Bank | 3.1% | $1.99B | 16 |
| 7 | NBT Bank, N.A. | 2.5% | $1.58B | 13 |
| 8 | CNB Bank | 1.3% | $839.6M | 12 |
| 9 | Five Star Bank | 0.6% | $404.1M | 6 |
| 10 | Alden State Bank | 0.6% | $391.3M | 3 |
Metro area deposit market: Buffalo-Cheektowaga, NY
The $66.97B held across 20 FDIC-insured banks in this metro area, as of the June 30, 2026 FDIC Summary of Deposits. The 10 largest are shown; see every bank in the Buffalo-Cheektowaga, NY market with its change from a year earlier. Banks only: credit unions are not in the Summary of Deposits.
| Rank | Bank | Deposit share | Deposits | Branches |
|---|---|---|---|---|
| 1 | Manufacturers and Traders Trust Company | 63.6% | $42.62B | 48 |
| 2 | KeyBank N.A. | 11.4% | $7.66B | 54 |
| 3 | HSBC Bank USA, N.A. | 5.1% | $3.39B | 1 |
| 4 | Bank of America, N.A. | 4.5% | $3.05B | 16 |
| 5 | Northwest Bank | 4.0% | $2.66B | 21 |
| 6 | Citizens Bank, N.A. | 3.9% | $2.58B | 23 |
| 7 | NBT Bank, N.A. | 2.5% | $1.64B | 14 |
| 8 | CNB Bank | 1.5% | $1.01B | 15 |
| 9 | Five Star Bank | 0.6% | $404.1M | 6 |
| 10 | Alden State Bank | 0.6% | $391.3M | 3 |
Banks in Buffalo: common questions
What is the biggest bank in Buffalo, NY?
Manufacturers and Traders Trust Company is the biggest bank in Buffalo, NY, with $36.09B in deposits at its Buffalo branches, 90.6% of the city's total as of the June 30, 2026 FDIC Summary of Deposits.
How many banks are in Buffalo, NY?
14 FDIC-insured banks operate 61 branches in Buffalo, NY as of the June 30, 2026 FDIC Summary of Deposits. This counts every bank with a branch in the city, not only banks headquartered there. Credit unions are not in the Summary of Deposits.
What are the largest banks in Buffalo, NY?
Ranked by deposits held in Buffalo branches as of the June 30, 2026 FDIC Summary of Deposits: 1. Manufacturers and Traders Trust Company (90.6%); 2. KeyBank N.A. (2.5%); 3. Bank of America, N.A. (2.2%); 4. Northwest Bank (1.8%); 5. NBT Bank, N.A. (0.8%). The share is each bank's part of all deposits in the city.
Largest banks in New York
For the state as a whole, see the largest banks in New York, ranked by total assets and by deposits in New York branches, or every bank in the New York bank directory.
Banks in other New York cities:
About this data
Branch counts and local deposits come from the FDIC Summary of Deposits, the annual June 30 survey of branch-office deposits for every FDIC-insured bank. Click any bank to see its full regulatory profile and complete branch network. Looking for banks headquartered here instead? See the US bank directory.