Here's something people from Arizona (and people looking to move to Arizona) will find interesting.
It's called RichBlocksPoorBlocks.com
It's an interactive map that shows how rich or poor every neighborhood in America is.
You type in an address, city, and/or state, and the site zooms to the location. It shows a color-coded map of neighborhood income.
Here's Phoenix, Tucson, and Flagstaff for examples.