Westamerica Bank, Shafter Branch Basic Info Reviews Routing Numbers Map & Direction Name: Westamerica Bank, Shafter Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 600 James Street Shafter, California 93263 Kern County View other branches Phone: 661-746-8080 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer121137001YN121140218YY121141000YN121141615YN From: To: