We don't provide a Google Maps plugin. It's relatively easy to output a Google Map from an address using their URL usage though. Example as follows.
www.google.com/maps/place/ADDRESS_HERE
This works with zip code as well and will highlight the zip code area. So you could just use a text field or integer field for them to supply zip code then use the profile value layout to substitute in the URL. Example as follows.
Code:
[cb:if cb_zip!=""]
<a href="https://www.google.com/maps/place/[value]">Map!</a>
[/cb:if]
If you want to embed the map you'll need to get an API key and use the below usage.
developers.google.com/maps/documentation/embed/guide