Westamerica Bank, Turlock Branch Basic Info Reviews Routing Numbers Map & Direction Name: Westamerica Bank, Turlock Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 2891 Geer Road Turlock, California 95382 Stanislaus County View other branches Phone: 209-664-1390 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer121137001YN121140218YY121141000YN121141615YN From: To: