Sunflower Bank, Longmont Main Office Branch Basic Info Reviews Routing Numbers Map & Direction Name: Sunflower Bank, Longmont Main Office Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 25 East Ken Pratt Blvd Longmont, Colorado 80501 Boulder County View other branches Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer101100621YY101101015YN101102043YN101102849YN101103644YN101910617YN102101425YN102104590YN107000521YN From: To: