Bank of the Pacific, Montesano Branch Basic Info Reviews Routing Numbers Map & Direction Name: Bank of the Pacific, Montesano Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 150 South Main Montesano, Washington 98563 Grays Harbor County View other branches Phone: 360-249-2499 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer123306429YN125107707YY125108353YN From: To: