National Exchange Bank and Trust, Marytown Branch Basic Info Reviews Routing Numbers Map & Direction Name: National Exchange Bank and Trust, Marytown Branch Main Office: No Service: Full Service Brick and Mortar Office Location: N10504 County Road G New Holstein, Wisconsin 53061 Fond Du Lac County View other branches Phone: 920-898-5757 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer075900766YY075911768YY075912851YN From: To: