Banks in Napa County, California
32 active bank branches operated by 13 institutions, per FDIC records.
Active branches
32
Banks present
13
Deposits (2026)
$4.3B
Closings since 2020
13
3 openings
Largest banks by deposits in Napa County (2026)
| Bank | Deposits | Share | Branches |
|---|---|---|---|
| Chase Bank | $785M | 18.1% | 3 |
| Wells Fargo | $770M | 17.7% | 4 |
| Bank of America | $747M | 17.2% | 3 |
| Columbia Bank | $397M | 9.1% | 3 |
| Bank of Marin | $346M | 8% | 2 |
| BMO Bank | $288M | 6.6% | 4 |
| Westamerica Bank | $273M | 6.3% | 6 |
| Mechanics Bank | $206M | 4.7% | 2 |
| Poppy Bank | $205M | 4.7% | 1 |
| U.S. Bank | $193M | 4.4% | 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.