USPS Addresses API (3.1.1) Overview The Addresses API validates and standardizes address information, improving delivery accuracy and pricing. It includes utilities for: ZIP Code™ Lookup: Finds valid ...

This Python script takes a CSV file containing city and state values, queries the USPS ZIP Code Lookup API, and returns the corresponding 5-digit ZIP codes. Created with development assistance from ...

Previously on You’ve Got Mail, we looked at a few services that were designed to speed up the mail at various points along the way. But these improvements were all taking place on the USPS’ side of ...

Kinnelon has asked for its own ZIP code four times. It was rejected each time by the USPS. Kinnelon and Butler share 07405, which residents say leads to mail and delivery issues KINNELON — The United ...

Bracing for a historic number of relocations, the U.S. Postal Service is asking those displaced by Hurricane Katrina to use the Internet to file change of address requests. Bracing for a historic ...