The downtown area of cities used to be the fastest-growing places. Not so much anymore. That's definitely true of 3 Illinois downtown areas that were just ranked among the fastest shrinking places in America.
Before America declared its independence, there was already a city in Missouri. As a matter of fact, the first settlement in Missouri predates the founding of this country by almost five decades.
Honestly it's a tough question to answer "What is the WORST City in Illinois to Live in?" but the data this one website throws out against this city in Illinois is hard to argue against.