Mercantile Bank of Michigan, Portage Branch Basic Info Reviews Routing Numbers Map & Direction Name: Mercantile Bank of Michigan, Portage Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 6405 South Westnedge Avenue Portage, Michigan 49002 Kalamazoo County View other branches Phone: 269-321-9100 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer072402665YY072403211YY072404650YY072404757YY072408892YN072413227YY072413816YY072413829YY072414022YY From: To: