Average GPS coordinates for Hornsby Postcode location: -33.702, 151.099. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Hornsby on map:

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Listing cities & postcodes (2):
>> New South Wales, 1630 Hornsby, GOSFORD, GPS coordinates: -33.7024,151.0993
>> New South Wales, 2077 Hornsby, GOSFORD, GPS coordinates: -33.7024,151.0993