Question 1

What ZIP code formats are supported?

Accepted Answer

This tool generates authentic ZIP codes in the formats used by the United States and Philippines. US ZIP codes come in 5-digit format (e.g., 12345) and ZIP+4 format (e.g., 12345-6789). Philippine ZIP codes use a 4-digit format (e.g., 1234). Both follow official postal service specifications for their respective countries.

Question 2

Are the generated ZIP codes real and deliverable?

Accepted Answer

The ZIP codes are generated to match authentic ZIP code formats for the US and Philippines, but they are random and may not correspond to actual addresses or postal routes. They are perfect for testing, development, QA, and educational purposes, but should not be used for real mail delivery or official documentation.

Question 3

Why only US and Philippines?

Accepted Answer

ZIP codes specifically refer to the Zone Improvement Plan coding system. Only the United States (where it originated) and the Philippines use the term 'ZIP code' for their postal systems. Other countries use different postal code systems, which are available in our separate Postal Code Generator.

Question 4

Can I choose between US and Philippine formats?

Accepted Answer

Yes! You can select either the United States or Philippines from the country dropdown. The generator will then create ZIP codes in the appropriate format for your selected country - US codes in 5-digit or ZIP+4 format, and Philippine codes in 4-digit format.

Question 5

How many ZIP codes can I generate at once?

Accepted Answer

You can generate from 1 to 99 ZIP codes at a time. You can also choose whether to allow duplicate codes or ensure each generated ZIP code is unique within your batch.

Question 6

What are some common uses for generated ZIP codes?

Accepted Answer

Common uses include software testing, form validation, creating sample datasets, developing shipping calculators, educational projects, and populating development databases with realistic address data for US and Philippine locations.

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