Average GPS coordinates for Koonunga Postcode location: -34.383, 139. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Koonunga on map:

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Listing cities & postcodes (1):
>> South Australia, 5373 Koonunga, GPS coordinates: -34.3833,139