Does anyone know how to implement a search by Zipcode function?

Question

Looking for resources/direction on how to implement a Zipcode finder for a later project. I have begun to think it several different ways, maybe it deals with geolocation API(or any API)? Maybe it is best implemented by SQL: http://answers.google.com/answers/threadview/id/769576.html.
Maybe it can be implemented by any language. I've been searching Google, YouTube, and here. So in short, I am asking if anyone has specific helpful references for building this. It would be much appreciated.

Answer 1

That's a good answer. I am still researching myself. I would think other programmers build or use an API to pull information from.

Answer 2

https://youtu.be/zZ0Cru5dK0E

Found it. Will try this out later.

Answer 3

This function will most likely require regular expressions which can be implemented in almost any language.