Middleton Jaycees Share: Non-Profit Organizations Visit Website P.O. Box 620154 Middleton, WI 53562 (608) 836-6527 www.middletonjaycees.org About Map About The Middleton Jaycees is a leadership training organization for professionals in the Middleton and Madison area to network and build business and social relationships. We strengthen careers and lives by connecting to our community. What's Nearby? Distance: 5 10 15 20 25 50 mi.