Guaranty Bank, Hwy 20 S Covington Ga Branch Basic Info Reviews Routing Numbers Map & Direction Name: Guaranty Bank, Hwy 20 S Covington Ga Branch Main Office: No Service: Full Service Retail Office Location: 5341 Hwy 20 South Covington, Georgia 30016 Newton County View other branches Phone: 770-788-8773 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer061192669YN071974408YN072471939YN091071598YN275071288YY From: To: