Bill Rankin, a PhD student in the history of science and architecture at Harvard, published a map of Chicago circa 2000 (Perspecta, Spring 2010) showing the distribution of race and income in the city and near suburbs on a block level. It’s fascinating to browse around, with lots of little details: Rogers Park would seem to be the most diverse; the divide between black and Latino populations along Grand Avenue in Humboldt Park is striking; community areas rarely represent stark racial divides, except in the case of North and South Lawndale; income presents few surprises, even when it looks like it might (the pocket of $100k+ incomes on the far southwest side is Beverly and to a lesser extent west Morgan Park). H/t Sean.