Questions regarding good plugin(s) for integrating Google Maps by Zip Code

I am in the process of building a website and would like to have a simple “search by zip code” field that already has the search criteria built in so people just need to put in their zip to find the locations around them.

It will just be one thing they will be looking for. I guess to populate the map per respective search, that I would also need some sort of integrated scraping plug-in?

I want to emulate the following setup from another website:
http://gsalr.com/

I don’t know if there is one plugin that will take care a both issues and if it is free or paid for?

I would also be open to paying for assistance if it’s at a reasonable rate. I am doing this as a sort of public service.

Thanks! Erik