Guaranty Bank and Trust Company, Zachary Branch Basic Info Reviews Routing Numbers Map & Direction Name: Guaranty Bank and Trust Company, Zachary Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 6800 Main Street Zachary, Louisiana 70791 East Baton Rouge County View other branches Phone: 225-654-6674 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer065202063YN065204980YY111101458YY From: To: