via Chicago Is Still America’s Most Segregated City: Chicagoist:
This map of Chicago was created by Eric Fischer, modeled after Bill Rankin’s map of Chicago’s racial and ethnic divides Each dot represents 25 people, based on 2000 census numbers. Red is White, Blue is Black, Green is Asian, Orange is Hispanic, Gray is Other.
Came to this via a Quora answer to “What are the most mind-blowing facts about Chicago?”