Washington Federal, Issaquah Branch Basic Info Reviews Routing Numbers Map & Direction Name: Washington Federal, Issaquah Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 855 Rainier Boulevard Issaquah, Washington 98027 King County View other branches Phone: 425-392-2673 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer122106073YN307072427YN312270450YN324170085YY325070980YY325170631YN From: To: