US Post Office

Welcome to USPS.com. Find information on our most convenient and affordable shipping and mailing services. Use our quick tools to find locations, calculate prices, look up a Zip Code, and get Track & Confirm info.

Nationwide courier service specializes in first-class certified mail delivery, domestic mail, signature confirmations, passport processing and postage stamps.

Get shipping rates, buy stamps, print postage, track a package, look up a ZIP Code Find the mailing products and services you need