Women building better communities. Junior League of Sioux Falls members promote the health & education of women & children. #JuniorLeague The Junior League of Sioux Falls is a network of empowered female civic leaders working with community partners to address and solve pressing issues in our community. Founded in 1978, we’re part of an international network of 291 Leagues &140,000 women. The Junior League of Sioux Falls, Inc. is an organization of women committed to promoting voluntarism, developing the potential of women and improving the community through the effective action and leadership of trained volunteers. Its purpose is exclusively educational and charitable.