Average GPS coordinates for Prestons Postcode location: -33.942, 150.872. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Prestons on map:

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Listing cities & postcodes (1):
>> New South Wales, 2170 Prestons, CAMPBELLTOWN, GPS coordinates: -33.9419,150.8717