Workflow can easily leverage the geographic information available to today's iOS devices. In this example the workflow takes a postal code and returns the longitude and latitude for that location. Please note that because postal codes are for a street or small area 'the longitude and latitude are corresponding approximations for those locations.
The workflow begins by capturing a UK post code. It could also be a non-UK postal code if you amend the country in the Street Address action that follows the storage of the post code. The resulting address object I held in the Location variable.
This is then queried for the latitude and longitude. Those details are then combined and output via Quick Look.