Specifications

If you'd like to double-check the data for a specific location an easy way is using the ABS map site: https://maps.abs.gov.au/
  Enter the suburb you are checking in the search bar.
  Select "2021 Suburbs and Localities (SAL)" in the top dropdown - this will give you the boundaries of the suburb.
  You can then select from the second dropdown one of the following:
    2023 Local Government Area (LGA)
    2022 State Electoral Division (SED)
    2021 Commonwealth Electoral Division (CED)
    2021 Statistical Area Level 2 (SA2)
  Clicking an area on the map will trigger a popup containing the values from your selected drop-downs.

While we scan many additional sources, the 4 major sources we use are:
GN - G-NAF - Geoscape Geocoded National Address File
EL - Australian Electorates data from the Australian Electoral Commission - © Commonwealth of Australia 2017
SL - ASGS - Australian Statistical Geography Standard from the Australian Bureau of Statistics
AP - Australia Post Postcode Lookup

We don't use the commercial dataset licensed by Australia Post. If you do subscribe and would like us to merge that data please contact us for an estimate.

In addition to the official states and territores there is also a value of "Other Territories", which encapsulates locations such as Norfolk Island. Christmas Island, The Cocos Islands.

Where datasets include these localities they may include them in the different state - Australia Post will assign them to the distribution centre used, and the AEC to the state in which their electorate resides. In these cases we've dicarded this information and kept them as "Other Terriroties"

For localities along state borders Australia Post may use a postcode from the ajoining state if it is serviced by a distribution centre in that state. We've discarded this state-inappropriate postcode where other sources agree on a state-appropriate postcode.