Average GPS coordinates for East Mackay Postcode location: -21.156, 149.201. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). East Mackay on map:

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Listing cities & postcodes (1):
>> Queensland, 4740 East Mackay, CENTRAL QLD, GPS coordinates: -21.1556,149.2005