FirstBank, Smithville Branch Basic Info Reviews Routing Numbers Map & Direction Name: FirstBank, Smithville Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 200 West Main St Smithville, Tennessee 37166 Dekalb County View other branches Phone: 615-597-4366 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer061107010YN064009461NY From: To: