Ever Wonder How Retailers See the Neighborhood?

I found this article on Planetizen. It's from Greater Milwaukee Today and it talks about companies like Claritas that make a business of determing who lives in a given area, and sorting the inhabitants into demographics groups to predict purchasing and behavioral patterns. Though they won't let you see details with out a paid membership, you can sneek a peak at who Claritas says dwells within in the 20002 area code.