Need american zip codes

You know what, I am creating many yahoo account.

Yahoo keeps saying that 11431 is not a valid zip code for US.

It is. It's on the list. So many things ilke that. What's going on?

Here is another one 13640

It's in NEWYORK yahoo idiot.

But no

This postal code is not located in the country you selected says Yahoo

I was like, aarrgh, press submit button again. I get the same result.