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Westamerica Bank routing numbers

ABA routing numbers used for ACH transfers and Fedwire. Always confirm with Westamerica Bank before sending money — directories can change, and some banks use different numbers by region or product.

HQ

San Rafael, CA

Assets

~$5.83B

Locations

75

Numbers on file (3)

  • 121140218

    ach · SUISUN CITY, CA

    Fed directory name: WESTAMERICA BANK

  • 121141000

    ach · SUISUN CITY, CA

    Fed directory name: WESTAMERICA BANK

  • 121141615

    ach · SUISUN CITY, CA

    Fed directory name: WESTAMERICA BANK

ACH (3)

Direct deposit, bill pay, and most consumer transfers use the ACH routing number.

Wire (0)

Domestic Fedwire may use a different number than ACH. Prefer the bank’s instructions for large or same-day wires.

Tips

  • Routing numbers are public identifiers; they alone never authorize a transfer.
  • Credit unions and thrifts may appear under a different legal name in the Fed file than in FDIC BankFind.
  • Need another bank? Use the global routing lookup.

Source: Federal Reserve E-Payments Routing Directory. Confirm with the bank before wiring or ACH.