Mutual Savings Association, FSA, Bonner Springs Branch Basic Info Reviews Routing Numbers Map & Direction Name: Mutual Savings Association, FSA, Bonner Springs Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 229 Oak Bonner Springs, Kansas 66012 Wyandotte County View other branches Phone: 913-441-5555 Please enable JavaScript to view the comments powered by Disqus. From: To: