Average GPS coordinates for Hartley Postcode location: -35.2, 139. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Hartley on map: 
Listing cities & postcodes (1):
>> South Australia, 5255 Hartley, GPS coordinates: -35.2,139
 
            
          Listing cities & postcodes (1):
>> South Australia, 5255 Hartley, GPS coordinates: -35.2,139


