Meta Box Geolocation is an extension of the Meta Box which interacts with Google Maps / Open Street Maps geocoding API and automatically populates location data into your fields such as postcode, state and country.
When developers have to enter the information for a shop or a restaurant, there must have much information like address, state, suburb, post code, latitude, longitude, etc. It is a slow and time-consuming work. Meta Box Geolocation provides a better way to enter these data automatically and properly.
With Meta Box Geolocation, no more complex work with Google Maps/Open Street Maps API. The only work you should do is just registering your desired fields (address, postal code, country, etc.) as normal fields in Meta Box. Whenever users enter an address, all the information for that location will be pulled from Google Maps/Open Street Maps Geolocation and filled in other fields automatically.
And due to the Google/Open Street Maps large database, it will be the exactly correct.