Average GPS coordinates for Birrong Postcode location: -33.893, 151.021. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Birrong on map:

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Listing cities & postcodes (1):
>> New South Wales, 2143 Birrong, BANKSTOWN, GPS coordinates: -33.8925,151.0207