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YPO Chicago Chapter Better Leaders through Lifelong Learning and Idea Exchange Already a Member. WELCOME TO YPO CHICAGO The YPO Chicago Chapter is one of the most vital active and preeminent Chapters in the global YPO network. Our 185 chapter members represent a broad spectrum of familyowned businesses entrepreneurial enterprises and hired professionals from Chicago and the greater Chicagoland area. YPO Chicago Members can use the login box to access the benefits and collective knowledge of YPO Chicagos powerful executive network.