First Security Bank, South Thompson Branch Basic Info Reviews Routing Numbers Map & Direction Name: First Security Bank, South Thompson Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 5208 South Thompson Springdale, Arkansas 72764 Washington County View other branches Phone: 479-750-5574 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer082901538YY082901774YN082901897YN082904027YN082906258YN From: To: