Security State Bank, Chehalis Main Branch Basic Info Reviews Routing Numbers Map & Direction Name: Security State Bank, Chehalis Main Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 442 Nw Chehalis Ave. Chehalis, Washington 98532 Lewis County View other branches Phone: 360-748-3361 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer125100607YY125107008YY From: To: