Westamerica Bank, Santa Rosa Branch Basic Info Reviews Routing Numbers Map & Direction Name: Westamerica Bank, Santa Rosa Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 111 Santa Rosa Avenue Santa Rosa, California 95404 Sonoma County View other branches Phone: 707-576-3600 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer121137001YN121140218YY121141000YN121141615YN From: To:
