TrailWest Bank, St. Regis Branch Basic Info Reviews Routing Numbers Map & Direction Name: TrailWest Bank, St. Regis Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 651 Montana Highway 135 Saint Regis, Montana 59866 Mineral County View other branches Phone: 406-649-2400 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer092900820YN092901560YY092905430YN From: To: