Average GPS coordinates for Tepko Postcode location: -34.967, 139.183. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Tepko on map:

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Listing cities & postcodes (1):
>> South Australia, 5254 Tepko, GPS coordinates: -34.9667,139.1833