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.
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Primary routing number
121140218 breaks down as 1211 for fed, 4021 for bank, 8 for check.
SUISUN CITY, CA — this is the leftmost 9-digit number on the bottom of a Westamerica Bank check.
Routing number details
- Bank
- WESTAMERICA BANK
- Routing number
- 121140218
- City
- SUISUN CITY
- State
- CA
- Numbers listed
- 3
- Used for
- ACH · direct deposit · bill pay
- On a check
- Bottom-left, 9 digits
- ABA checksum
- Valid
All Westamerica Bank routing numbers3
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