Enter a corporate or residential street address, city, and state to see a specific ZIP Code ™. Find by Address By City and State

Welcome to USPS.com. Track packages, pay and print postage with Click-N-Ship, schedule free package pickups, look up ZIP Codes, calculate postage prices, and find everything you need for …

Jan 12, 2026 · Address Lookup – Lookup individual addresses to verify/obtain the correct 5-digit ZIP Code, ZIP + 4 code, carrier route code, county code, delivery point code, and check digit code.

ZIP Code by Address Enter street address, city, and state to see a specific ZIP Code. Note: A ZIP Code result does not confirm that a person or company is at that address.

A ZIP Code is an essential part of the mailing process. We provide your business with several different ways to find a ZIP Code and understand it.

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To make sure that you are getting a list with accurate addresses, ask about the National Deliverability Index (NDI) of the list. The NDI rates the percentage of addresses in a list that are deliverable.

How to contact USPS for USPS Web Tools® and USPS API assistance. The USPS Web Tools API library gives ecommerce website shopping carts and shipping software access to USPS® data like …

Use the free ZIP Code Lookup and the ZIP+4 code lookup on the Postal Explorer website (left frame) to find the correct ZIP Codes and ZIP+4 codes for your addresses. Almost 25% of all mailpieces have …

Find information on address lookup, ZIP Codes, and other USPS services for your mailing and shipping needs.