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What are standard ABS geographies?

Understand the ABS geographic boundaries used in Placemaker, including SA1, SA2, SA3, SA4, LGA and GCC, and how they affect data aggregation.

The Australian Bureau of Statistics (ABS) defines a hierarchy of standard geographic areas used across Australian data collection, analysis and planning. Placemaker uses these geographies to display and aggregate forecast data.

Key Concepts

The ABS geographic hierarchy

ABS geographies nest within each other from the smallest to the largest:

TABLE TO INSERT MANUALLY — columns: Geography | Full name | Typical population | Notes

SA1 as the primary unit in Placemaker

Placemaker currently displays forecast data at the SA1, SA2, SA4 and State level. SA1 areas represent the smallest communities for planning, so you can build up a catchment that meets your needs.

Why geography matters for catchments

When you create a catchment in Placemaker, the platform intersects your catchment boundary with the underlying SA1 areas. Placemaker then aggregates population and dwelling forecast data for the SA1 areas that fall within or overlap the catchment. Understanding how SA1 areas are defined helps you interpret whether a catchment boundary is capturing the community you intend.

How This Applies in Placemaker

The map in Placemaker displays SA1 boundaries. Clicking on an SA1 area shows its forecast data. Catchment insights aggregate data across the SA1 areas within the catchment boundary.

Screenshot showing SA1 geographic boundaries on the Placemaker map.

Frequently Asked Questions

Q: Can I see data at the suburb level?

A: Suburb-level data (SAL) is planned for a future release. Until then, SA2 areas often correspond closely to suburbs, but they are not the same.

Q: Will Placemaker support LGA data in the future?

A: Additional geographies including SA3, LGA, suburb (SAL) and Greater Capital City Statistical Areas are planned for future releases.

Q: Where do ABS boundaries come from?

A: Boundaries are defined and maintained by the ABS as part of the Australian Statistical Geography Standard (ASGS). Boundaries are updated following each Census, approximately every 5 years.

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