Zip Code Visualizer.
Just saw this on metafilter. It’s pretty nifty:
Zip code Visualizer
It’s a java applet that shows a map of the United States with a point of light for every zip code. As you type your zip code it turns off the lights that you’re excluding, allowing you to visualize how the zip codes narrow to a specific location.
June 14th, 2005 at 12:33 pm
that s a great tool. Zip Codes are more important than most people think