Guaranty Bank, Farmington Hills Branch Basic Info Reviews Routing Numbers Map & Direction Name: Guaranty Bank, Farmington Hills Branch Main Office: No Service: Full Service Retail Office Location: 33250 W 12 Mile Rd Farmington Hills, Michigan 48334 Oakland County View other branches Phone: 248-737-7962 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer061192669YN071974408YN072471939YN091071598YN275071288YY From: To: