USPS Zip Code Validation

 USPS zip code validation is a standard method to make sure that mailing addresses are valid and accurate. This method is usually used by direct mail operations. Businesses usually use it as a means of improving their communication with their customers. It can help improve the accuracy of data by cross-checking it with USPS' official address database.



Using USPS's ZIP code validation will help you avoid costly mistakes such as sending the wrong person's mail or using the wrong address. This can cost you money and time. With this method, you'll ensure that your mailings are delivered to the right place, and you'll ensure that your customers and prospects receive them without any hassle.

You can validate a USPS zip code using tables and drop down lists. You can use these lists to validate each ZIP code based on its country and state. The first five digits of the ZIP code are the most important for validating an address. In addition, you can use drop down lists for countries and states. There are 65 US states and 249 countries listed by ISO. These lists exclude military ZIP codes and PO Box only zip codes. You should also check out the unique zip code classes.

Another feature of the USPS's ZIP code validation is its ability to match your input address to a specific ZIP code. It can also match a ZIP4 file to a PO BOX address. If you enter a street style address and it doesn't match a specific ZIP4 record, the validation fails and returns a footnote.

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