First Bank, Wentzville Branch Basic Info Reviews Routing Numbers Map & Direction Name: First Bank, Wentzville Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 15300 Veterans Memorial Parkway Wentzville, Missouri 63385 St. Charles County View other branches Phone: 636-327-8115 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer063114946YN081005794YN081009428YY081205109YN081205455YN121137506YN122239131YN From: To: