The Union Bank Company, The Ohio State Bank Branch Basic Info Reviews Routing Numbers Map & Direction Name: The Union Bank Company, The Ohio State Bank Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 111 South Main Street Marion, Ohio 43302 Marion County View other branches Phone: 740-387-2265 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer041213759YY044102524YN044115870YN From: To: