Horizon Bank, Three Rivers Branch Basic Info Reviews Routing Numbers Map & Direction Name: Horizon Bank, Three Rivers Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 123 Portage Avenue Three Rivers, Michigan 49093 St. Joseph County View other branches Phone: 269-279-5117 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer071201320YY071911704YY072413625YY072414132YY074906428YY074914067YY271274115YN271274241YY272471658YN274970050YY From: To: