You don't have to be a genius to live in Illinois - but it helps. You'll be more likely to relate with the natives. There isn't a state in America that's smarter than Illinois, which boasts several of the best-ranking public schools in the USA.
Bearing in mind how clever everyone in the state is, we're surprised nobody's come up with a way to deal with the rats. Chicago is full of them, with the 50,000 reported rat infestations soaring far above the average.