PHP Classes

PHP USPS API Address Validation: Get the details of a given address using USPS API

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usps-address-valid 1.1GNU General Publi...5HTTP, PHP 5, Web services


This package is specific mainly for applications used in United States United States .

This class can get the details of a given address using USPS API.

It can send a HTTP request to the USPS API Web server to get the details of a given United States address.

The class returns an array with the street address, city, state, and the 5 digit postal code.

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This CLASS is designed to take advantage of the USPS API for looking up the corrected (normalized) address for a given physical address. There is very little examples of implementing the USPS API in PHP.


When you instantiate the class, include the API key. See the example.php file for usage. If you don't have a valid API, you can get one free at

Revision History:

  • 1.0 Initial Release
  • 1.1 Bugfix 500 error.

This code was written by request by another developer on because Streetlayers is going away very soon.


GNU General Public License v3.0 (GNU GPLv3)

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Accessible without login Plain text file example.php Example Example script
Accessible without login Plain text file LICENSE Lic. License text
Accessible without login Plain text file Doc. Documentation
Plain text file USPS.php Class Class source

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