USPS Address Verification Service API
- Elaviya Examy
- Nov 10, 2022
- 1 min read
The USPS address validation service API allows you to validate the accuracy of postal addresses. This service compares a provided address against the USPS database, making corrections to delivery lines and last lines if necessary. It is highly customizable, and it works with various systems. Its primary purpose is to help users find the correct addresses and verify them.
Address standardization involves recording and converting address information into a format that matches the official requirements for that country. This helps improve shipping processes and eliminate human error. Address autocomplete pre-populates forms on websites, reducing the amount of time it takes to fill out checkout flows and preventing user error.
The API returns an address if it matches. The API can validate up to 100K addresses. It can return the address along with the corrections and a ZIP+4 code. You can also use the API to verify addresses in bulk. The processing is asynchronous, which means that you can upload several addresses for validation at a time. When the validation is complete, the API returns a callback to indicate that the address was successfully validated.
Although the USPS address API is available to developers free of charge, it's not always easy to use. Many people have complained that the documentation isn't enough to develop useful applications. Moreover, there are poor instructions and documentation, and the system is often down for extended periods of time. In addition to these drawbacks, the USPS API also lacks the millions of valid addresses needed by developers.
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