Washington State Bank, Opelousas Branch Basic Info Reviews Routing Numbers Map & Direction Name: Washington State Bank, Opelousas Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 1810 South Union Street Opelousas, Louisiana 70570 St. Landry County View other branches Phone: 337-948-4544 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer065202461YY065204391YN From: To:
