I know about the Atlas of the DC Universe, but it's a bit old now.
But more than that, I am more interested in readers' perceptions of towns and countries in the DC Verse. From Amnesty Bay to Zambesi, what are your thoughts?
How many people in Amnesty Bay? Gotham? Central City?
How urbanized is Zambesi? What's it's median income? What are the major exports?
Do you favor particular industries in particular cities?
And, more canon-based: do we have any sort of this information that is less than a decade old?