Banks in Lewis County, New York
6 active bank branches operated by 3 institutions, per FDIC records.
Active branches
6
Banks present
3
Deposits (2026)
$367M
Closings since 2020
1
0 openings
Largest banks by deposits in Lewis County (2026)
| Bank | Deposits | Share | Branches |
|---|---|---|---|
| Community Bank | $263M | 71.6% | 4 |
| KeyBank | $89M | 24.2% | 1 |
| Carthage Savings and Loan | $16M | 4.3% | 1 |
Deposit location reflects the office to which deposits are reported and may not represent the residence of depositors.
Cities and towns
Transcribed from FDIC BankFind Suite active-location records and the annual Summary of Deposits. County assignment follows the FDIC branch record.