National Bank, Lampasas Branch Basic Info Reviews Routing Numbers Map & Direction Name: National Bank, Lampasas Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 907 South Key Avenue Lampasas, Texas 76550 Lampasas County View other branches Phone: 512-556-8288 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer111904419YY111908499YN111923490YN From: To: