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Validation
Validate United States ZIP codes including standard 5-digit and ZIP+4 formats
Execution
Fill in the form, run the tool, and review the result in one place.
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Tool usage guide
The US ZIP Code Validator is a straightforward online tool that checks if a given ZIP code is valid in the United States. It supports both the standard 5-digit format and the extended ZIP+4 format, helping ensure address data accuracy.
Background
A user is completing an online purchase and needs to confirm their shipping ZIP code is correct.
Problem
The user has entered '12345-6789' but is unsure if the ZIP+4 format is valid.
How to use
Input '12345-6789' into the ZIP Code field and submit for validation.
Outcome
The tool confirms that '12345-6789' is a valid US ZIP code, allowing the user to proceed.
Background
A marketing coordinator has a spreadsheet of customer addresses with ZIP codes that may contain errors.
Problem
Some ZIP codes are missing digits or have incorrect formatting, risking failed mailings.
How to use
Use the validator to check each ZIP code individually from the spreadsheet, or integrate it into a script for automated validation.
Outcome
Invalid ZIP codes are identified and corrected, improving the accuracy of the mailing list.
It validates standard 5-digit ZIP codes (e.g., 90210) and ZIP+4 codes (e.g., 12345-6789).
No, it is a free tool with no hidden charges or registration required.
No, this tool is designed exclusively for United States ZIP codes.
The tool will return a result indicating the code is invalid, often with a note on the expected format.
It only checks the format; for existence verification, use a dedicated postal service lookup.