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 ...

HUD's Office of Policy Development and Research (PD&R) is pleased to announce that HUD-USPS ZIP Code Crosswalk data are now available via an application programming interface (API). PD&R produces the ...

SAMEZIP, Saturday, July 16, 2022, Press release picture. Zip code is a very important range area tool. It was first introduced by the United States Postal Service (USPS).