First Interstate Bank, Columbus Branch Basic Info Reviews Routing Numbers Map & Direction Name: First Interstate Bank, Columbus Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 36 North 9th Street Columbus, Montana 59019 Stillwater County View other branches Phone: 406-322-4731 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer092901272YN092901641YN092901683YY102300129YN From: To:
