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 …

Jan 5, 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 …

A ZIP Code result does not confirm that a person or company is at that address. If you searched for a company and did not get the results you expected, search again either without the …

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.

Find answers to common USPS questions, including address lookups, ZIP Code™ searches, and mailing tips.

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 …

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 …

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

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