Average GPS coordinates for Karratha Postcode location: -20.738, 116.846. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Karratha on map:

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Listing cities & postcodes (1):
>> Western Australia, 6714 Karratha, KALGOORLIE, GPS coordinates: -20.7377,116.8463