First Security Bank, First Security Bank Of Mountain Home Basic Info Reviews Routing Numbers Map & Direction Name: First Security Bank, First Security Bank Of Mountain Home Main Office: No Service: Full Service Brick and Mortar Office Location: 105 East Ninth Street Mountain Home, Arkansas 72653 Baxter County View other branches Phone: 870-424-8090 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer082901538YY082901774YN082901897YN082904027YN082906258YN From: To: