It is a common misconception that 5-digit US ZIP Codes are topographic boundaries that can somehow be accurately represented on a map. They are not. ZIP Codes are a trademark...
If you have ever run into a unique ZIP code while doing address lookups or validation, then there is a good chance that they may have caused some confusing results...
Addresses in the United States used to be a simple matter of a street location, a city and state, and perhaps a city-specific postal zone. But by the 1960s, between...
