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  1. 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

  2. Home | United States ZIP Code 5 Plus 4 ️

    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 Code search, and …

  3. 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.

  4. ZIP+4 Code lookup | Get last 4 digits of 9-digit ZIP Codes

    The last 4 digits of these 9-digit ZIP Codes usually represent 6-20 delivery points on a USPS carrier route. A full zip code lookup can provide you with your 9 digit zip code.

  5. ZIP+4 Code Format Guide: How to Use 9-Digit ZIP Codes

    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.

  6. Free ZIP Code Lookup and Finder

    Free ZIP Code Lookup and Finder. Lookup ZIP codes by city, address, state, county, or area code and get all the ZIP Codes.

  7. ZIP Code Plus 4 Lookup: How 9-Digit ZIP Codes Improve Mail ...

    Today’s lookup tools make it simple to find a 9 digit ZIP Code — all you need is a valid street address. These tools query a verified address database (often powered by the USPS) and return the correct …