ZIPCodeWorld United States Free Edition includes 5-Digit ZIP code, state code and state name. The database provides the ZIP codes and state code in the United States of America. The complete database contains over 42,000 unique records updated every month. The database is available in CSV (text) format and can be imported into other formats easily. This database is free for both personal and commercial usage. You can use the list for automated data validation or other purpose. If you need to have a complete list of United States ZIP codes, this is the right database for you.