USPS Address Autocomplete API

If you're building a web application, you may be interested in integrating a USPS address autocomplete API into your application. However, there are some limitations that you should be aware of before you begin using this API. Among these limitations are the need to sign a license agreement and the limit of the number of requests you can make per day.

The USPS address validation API can be useful for businesses that manage customer lists. It performs address standardization and validation by comparing the address provided with the USPS address database. If there's no exact match, the USPS API will attempt to suggest a correct address based on the information provided.

The address validation API works with USPS mailing and shipping services. However, it is important to note that you can't use the Address API to create databases or do batch processing. The USPS will terminate your license if multiple users with the same User ID attempt to use the API. This is because of security concerns. While USPS addresses are generally accepted, mistakes or typos can occur. In the case of postal errors, the system can try to correct the address and ZIP code.

The API has a simple interface and tech support. It also provides supplemental information like weather information. It can be used in many applications and has a very high accuracy rate. The documentation for this API is much easier to understand than that of USPS.