In the last 3 years, over 82,000 residents have left Chicago. That's more than half the population of Naperville. And in comparison, that's like taking every single seat in the United Center, filling it four times over, and having all those people move away. But here's the crazy part—while Chicago's population dropped by 3%, the western suburbs are absolutely exploding. New retail developments, businesses, and home prices—they're skyrocketing as more and more people move out west. So what's really driving this?