Southwest Bank, Arlington Lamar Branch Basic Info Reviews Routing Numbers Map & Direction Name: Southwest Bank, Arlington Lamar Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 1630 E. Lamar Suite 140 Arlington, Texas 76011 Tarrant County View other branches Phone: 817-916-6980 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer111900756YY111924428YN From: To: