The Washington Trust Company, of Westerly, North Kingstown Branch Basic Info Reviews Routing Numbers Map & Direction Name: The Washington Trust Company, of Westerly, North Kingstown Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 7625 Post Road North Kingstown, Rhode Island 02852 Washington County View other branches Phone: 401-295-4700 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer011500858YY011501750YN From: To: