1st Source Bank, Mishawaka Main Office Basic Info Reviews Routing Numbers Map & Direction Name: 1st Source Bank, Mishawaka Main Office Main Office: No Service: Full Service Brick and Mortar Office Location: 101 Lincolnway East Mishawaka, Indiana 46544 St Joseph County View other branches Phone: 574-258-3118 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer071202756YY071212128YY From: To: