Autofill City & State from Zip Code with Ziptastic

Most address fields on web forms ask for city, state, and zip code (or city and post code, outside of the US). But as us nerds often lament, city and state are redundant with zip code. Or at least they can be inferred from a correctly entered zip code. That's the kind of thing computers are good at. What we need is a proper API to cough up that information for us on demand.

Enter Ziptastic, a free (…

Autofill City & State from Zip Code with Ziptastic is a post from CSS-Tricks