IAB Financial Bank, Center Street Bourbon Branch Basic Info Reviews Routing Numbers Map & Direction Name: IAB Financial Bank, Center Street Bourbon Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 436 East Center Street Bourbon, Indiana 46504 Marshall County View other branches Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer071205850YY074913275YY074913314YY From: To: