USPS Zip Code Validation API

USPS Zip code validation is the process of verifying postal addresses before delivering mail. USPS validates addresses by comparing them against their database. The database is updated regularly and contains the most comprehensive collection of addresses in the US. This data is made available to businesses via APIs. These APIs can be integrated in your website or shipping application and provide validation for individual addresses or lists of addresses.

The USPS offers a range of features to verify a postal address. One of these features is real-time ZIP code validation. This process allows users to enter a zip code and it automatically fills in the city and state fields. The service also works for international addresses. You can also use a drop-down list to validate US ZIP codes.

ZIP code validation is essential for direct mail campaigns. It can save time and money and improve your delivery rates. While USPS offers a free tool to check ZIP codes, it is not recommended for use in bulk. Hence, a third-party solution is advisable for businesses. You can also try out a free USPS address lookup tool offered by Experian. The USPS does not provide an API for this purpose, but the tool is available for businesses at no charge.

USPS ZIP code validation is critical for businesses to avoid postal fraud. Incorrect or invalid ZIP codes can cost you money and your company reputation. If you are mailing bulk mail, it can be challenging to find the right ZIP code. Manual validation is a time-consuming and costly process and could waste valuable staff time.