United States · ACH / ABA
Westamerica Bank routing number
Find ACH / ABA routing numbers for WESTAMERICA BANK. Primary routing number 121140218 (SUISUN CITY, CA). Confirm on your check or statement, then send with Glide.
US & international payments
Sending money to Westamerica Bank?
Skip the bank wire fee and FX markup. Open a free Glide account and pay Westamerica Bank at the mid-market rate.
All Westamerica Bank routing numbers3
When you need this number
Use a Westamerica Bank routing number for US direct deposit, payroll, bill pay, and ACH transfers. For international payments, you may also need a SWIFT code. Glide can route many corridors without a costly wire.
US & international payments
Sending money to Westamerica Bank?
Skip the bank wire fee and FX markup. Open a free Glide account and pay Westamerica Bank at the mid-market rate.