First Guaranty Bank, Oil City Branch Basic Info Reviews Routing Numbers Map & Direction Name: First Guaranty Bank, Oil City Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 126 S. Highway 1 Oil City, Louisiana 71061 Caddo County View other branches Phone: 318-995-6682 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer065201381YN065404340YY065404353YN From: To: