Allegiance Bank, Bellaire Branch Basic Info Reviews Routing Numbers Map & Direction Name: Allegiance Bank, Bellaire Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 5410 Bellaire Blvd. Bellaire, Texas 77401 Harris County View other branches Phone: 281-894-3200 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer111903258YN113024096YN113024410YN113024517YN113025723YY113113402YN From: To: