Insulation recommendations by Zip code

The department of Energy has a little program that recommends minimum insulation R-values for your renovation or new house. You provide the zip code (first three digits), a very small amount of information about the house (like the type of heating system, whether there are cathedral ceilings and crawl spaces), and it calculates R-values. It's at this link: http://www.ornl.gov/~roofs/Zip/ZipHome.html. They have a good insulation fact sheet if you want to learn more about insulation.
Here is a link to their figure showing where to insulate: Insulation figure .