Lapeer County Bank & Trust Co., Southgate Branch Basic Info Reviews Routing Numbers Map & Direction Name: Lapeer County Bank & Trust Co., Southgate Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 637 South Main Street Lapeer, Michigan 48446 Lapeer County View other branches Phone: 810-664-9986 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer072403046YY072414336YN From: To: