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  1. ZIP CodeLookup | 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. ZIP+4 Lookup Tool (USPS-Powered 9-Digit ZIP Code Finder)

    Enter a full mailing address to get the correct 9-digit ZIP+4 code and USPS-standardized address format. Free tool powered by official USPS data.

  3. 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 …

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

    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.

  5. Lookup a U.S. Zip+4 Code - Free Web Tool by Firstlogic

    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 …

  6. 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.

  7. United States ZIP CodesZIP Code Lookup by Address

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

  8. USPS - Find a ZIP Code

    We make it simple. Enter an address and receive the ZIP+4 code. Here you will find ZIP Code frequently asked questions. Check online and get the answers quickly. Find publications and …

  9. United States Postal Service - ZIP + 4 Lookup

    ZIP+4 Code Look-up Enter an address. If found, the standardized address and ZIP+4 Code will be returned.

  10. ZIP+4 Codes – The Last 4 Digits of ZIP Code - PostGrid

    The United States Postal Service (USPS) uses ZIP+4 codes to assign five-digit ZIP codes. Each ZIP+4 code comprises a 9-digit code; the first 5 digits represent the standard ZIP code, and …