Banks in Nantucket County, Massachusetts
8 active bank branches operated by 4 institutions, per FDIC records.
Active branches
8
Banks present
4
Deposits (2026)
$1.3B
Closings since 2020
0
0 openings
Largest banks by deposits in Nantucket County (2026)
| Bank | Deposits | Share | Branches |
|---|---|---|---|
| Rockland Trust Company | $426M | 33.8% | 3 |
| The Cape Cod Five Cents Savings Bank | $418M | 33.1% | 2 |
| Bank of America | $260M | 20.6% | 2 |
| Hingham Institution for Savings | $159M | 12.6% | 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.