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

Each 9-digit ZIP Code corresponds to one or more addresses within the U.S. territories. Additionally, this site offers several address-related tools, including address validation, full ZIP …

ZIP Codes for United States. Use our address lookup or code list to find the correct 5-digit or 9-digit (ZIP+4) code for your postal mails destination.

Aug 10, 2025 · In 1983, the USPS introduced an extended version of the ZIP Code, known as ZIP+4, to enhance mail sorting and delivery precision. This system appends four additional …

Clear, up-to-date guide to ZIP+4 format: what the 9-digit code means, when it helps, and how to look up the correct ZIP+4 for any address.

Find ZIP+4 Codes for any USPS address. Lookup ZIP+4 Codes by single address, batch, or API. Learn what they are and what they mean too. Use it free.

Find any zip code (including ZIP+4 - full 9-digit US zip codes) or postal code in the world by using our simple lookup function. Enter the address, city, state, province, or country into the search …

Let’s break it down: A standard ZIP Code contains 5 digits, pinpointing a geographic region or delivery area. But a 9-digit ZIP Code adds another layer — helping the United States Postal …

Our address validation software is able to retrieve the ZIP code of an address based on the Street name and number, City, and State information. If you don't have the ZIP code information for …

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.