Washington Federal, Omak Branch Basic Info Reviews Routing Numbers Map & Direction Name: Washington Federal, Omak Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 21 West Bartlett Avenue Omak, Washington 98841 Okanogan County View other branches Phone: 509-826-2220 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer122106073YN307072427YN312270450YN324170085YY325070980YY325170631YN From: To: