Question : Validate/Verify US zip codes

Is there a way (maybe an API) something to validate US zipcodes? I have a form and one field is zip code and one is State. I want to verify it..but i think it has to be verfied based on can I do this?

Answer : Validate/Verify US zip codes

There's a web service that you can use to get what you need:

See the GetInfoByZip method.

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