A nice Zip Code finder tool
I found this zip code visual finder and it is absolutely brilliant.
Basically you have a US map that is lightened up by the locations with valid zip codes. When you type a zip code, the map will highlight the location for it. The best part is, the map takes a progressive approach, like Google Earth. For example, it will react beased on the very first digit you type, and continuously narrow down to the location as you finish the whole 5 digits.
Very nice tool if you try to figure out where a zip code is located.