I assume you are strictly referring to within the city limits. If you include the burbs, then check out Robbins:
https://goo.gl/maps/ompv1Df5aqT2
(It's also microscopic).
http://www.chicagomag.com/Chicago-Magazine/December-2014/The...
Of course, as with any "no true scotsman" argument, it isn't as bad Flint in every way.