Average GPS coordinates for Richmond Postcode location: -33.604, 150.723. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Richmond on map:

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Listing cities & postcodes (2):
>> New South Wales, 2753 Richmond, PENRITH, GPS coordinates: -33.6075,150.6945
>> New South Wales, 2755 Richmond, GPS coordinates: -33.5996,150.7514