The Farmers & Merchants Bank, Marianna Branch Basic Info Reviews Routing Numbers Map & Direction Name: The Farmers & Merchants Bank, Marianna Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 33 West Main Street Marianna, Arkansas 72360 Lee County View other branches Phone: 870-295-3421 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer082901619YN082907477YY082907529YN084100858YN From: To: