First National Bank Texas, South Post Oak Banking Center - Rc 5 Basic Info Reviews Routing Numbers Map & Direction Name: First National Bank Texas, South Post Oak Banking Center - Rc 5 Main Office: No Service: Full Service Retail Office Location: 10306 S. Post Oak Houston, Texas 77035 Harris County View other branches Phone: 713-723-7069 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer111902398YY111906271YY111926057YN113010217YN122106455YY From: To: