Tri Counties Bank, Susanville Branch Basic Info Reviews Routing Numbers Map & Direction Name: Tri Counties Bank, Susanville Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 2641 Main Street Susanville, California 96130 Lassen County View other branches Phone: 530-257-4151 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer121132394YY121135045YY121141738NY121142313YY121142766NY121143422YN From: To: