The ABS makes available an extensive range of correspondences to assist users in converting statistical data to and from geographic regions included in the Australian Statistical Geography Standard (ASGS).

Correspondences mathematically reassign data from one geographic region to another. As most ABS data relates to population, standard correspondences have a weighting calculated based on the location of the population, and uses population data modelled to residential address locations. Correspondences based on area or other variables are available on request.

A Quality Indicator is provided on each correspondence generated by the ABS. This indicator provides the user with a basic indication of the resulting data accuracy as a result of converting the data between regions. This is based on the geographic overlap between the geographic regions and the underlying population. It is recommended that this indicator is considered before working with every correspondence.

How to access correspondences

Standard correspondences, coding indexes and allocation tables are available through the following resources:

    • For a full collection of correspondences and coding indexes on both ASGC and ASGS geographic regions see the ABS Geospatial Solutions page on
    • For a selection of specific correspondences and allocation tables relating to ASGS boundaries see the downloads tab of the relevant ASGS Publications
    • For a selection of correspondences developed to assist users in converting data from the ASGC to the 2011 ASGS see the ASGS Correspondences Publication
    • For a selection of correspondences relating to the ASGC see the relevant edition of the ASGC Correspondences Publication
    • For custom correspondence requests please contact us

For more information on the use of correspondences and the differences between correspondences, coding indexes and allocation tables, please refer to:
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