PlainsCapital Bank, First National Bank/Branch Basic Info Reviews Routing Numbers Map & Direction Name: PlainsCapital Bank, First National Bank/Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 190 East Whitestone Boulevard Cedar Park, Texas 78613 Williamson County View other branches Phone: 512-506-2500 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer111322994YY114921415YY311993149YY From: To: