Average GPS coordinates for Thornleigh Postcode location: -33.732, 151.079. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Thornleigh on map:

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Listing cities & postcodes (1):
>> New South Wales, 2120 Thornleigh, GOSFORD, GPS coordinates: -33.7323,151.079