Prospera Credit Union Financial & Investment Services Prospera Credit Union Visit Website 4830 N Ballard Road Appleton, WI 54913 (920) 882-4800 www.myprospera.com About Map About Prospera Credit Union's history dates back to 1934. As a local credit union, our promise to our members is to provide personal, tailored guidance that leads to prosperity for all. What's Nearby? Distance: 5 10 15 20 25 50 mi.