Grinnell State Bank, Marengo Branch Basic Info Reviews Routing Numbers Map & Direction Name: Grinnell State Bank, Marengo Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 1101 Court Avenue Marengo, Iowa 52301 Iowa County View other branches Phone: 319-642-5511 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer073901725YN073915342YN From: To:
