Average GPS coordinates for Guildford Postcode location: -33.864, 150.984. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Guildford on map:

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Listing cities & postcodes (2):
>> New South Wales, 1848 Guildford, GPS coordinates: -33.8643,150.9839
>> New South Wales, 2161 Guildford, BANKSTOWN, GPS coordinates: -33.8643,150.9839