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  1. 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 …

  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. HAMILTON, Ohio ZIP Codes

    ZIP Codes for HAMILTON, Ohio. 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 Code

    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. Why Do Some ZIP Codes Have 9 Digits? - LegalClarity

    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 …

  6. 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.

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

    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 …

  8. 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.

  9. 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.

  10. What Is My Zip Code? Instantly Find Your ZIP Code by Location

    Sep 28, 2025 · What Is My ZIP Code? Find your 5-digit or 9-digit ZIP code using GPS or Google Maps. Search postal code by location, address, or city anywhere in the world