Stockman Bank of Montana, Miles City Haynes Avenue Branch Basic Info Reviews Routing Numbers Map & Direction Name: Stockman Bank of Montana, Miles City Haynes Avenue Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 800 South Haynes Avenue Miles City, Montana 59301 Custer County View other branches Phone: 406-234-8420 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer092902446YN092904570YN092905249YY From: To: