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  1. USPS - Find a ZIP Code

    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.

  2. ZIP Code™ Lookup | USPS

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

  3. Look Up a ZIP Code™ | PostalPro - USPS

    Click here to Look up ZIP Codes™ for corporate and residential addresses. ZIP Code by Address Enter street address, city, and state to see a specific ZIP Code.

  4. Welcome | USPS

    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 …

  5. Free ZIP code map, zip code lookup, and zip code list

    United States Zip Codes provides a free zip code map and list of zip codes by state. Find zip codes by address, zip codes by city, or zip codes by state.

  6. Search Results | zip code lookup - USPS

    Change of Address (COA) is a request to tell the United States Postal Service (USPS) to reroute your mail (including letters and packages) for ALL/OR SELECTED individuals at the specified …

  7. United States ZIP CodesZIP Code Lookup by Address

    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.