First Guaranty Bank, Amite Branch Basic Info Reviews Routing Numbers Map & Direction Name: First Guaranty Bank, Amite Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 100 East Oak Street Amite, Louisiana 70422 Tangipahoa County View other branches Phone: 985-748-5111 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer065201381YN065404340YY065404353YN From: To: