Since the Goofs thread has seen some activity lately, I was reminded of these goofs about Chicago that could be included
In Blood Rites, Wrigley Field is described as being surrounded by acres of parking lots, which is not the case.
Edit: I was also going to write about some other issues with Chicago geography, but since I'm not particularly familiar with them, I skipped them, and then forgot to go back and change the plural usage "goofs" from earlier in the post.