How to Look Up a ZIP Code

ZIP+4 Code™ Lookup: How To Get the Last 4 Digits of 9-Digit ZIP Codes | Tutorial

ZIP Code Lookup in a Spreadsheet - Map ZIP code to state and county and get ZIP code demographics

Creating a Map Chart to Show the Most Expensive Zip Codes in the U.S. by State

How zip codes helped organize America

Zip Code Finder : United States, Canada