Such an thought provoking site. This is a modified CTA map that details all the lines and CTA stations and marks community areas where the median income is above or below the poverty line for a family of four ($23,018). The green is above. The red is below.
There are 77 community areas. These areas are colored based on the hardship index. The greater the hardship index, the darker it appears on the map.
There is also a recession timeline.