Allocation files

Allocation files listing the geographic hierarchies for each of the following geographies, are available for download in .xlsx format:

• Mesh Blocks (MB)
• Statistical Areas Level 1 (SA1)
• Statistical Areas Level 2 (SA2)
• Statistical Areas Level 3 (SA3)
• Statistical Areas Level 4 (SA4)
• Greater Capital City Statistical Areas (GCCSA)
• States and Territories (STE)
• Australia (AUS)

File contents:

For example MB_2026_AUST contains all Mesh Blocks within Australia and includes the following fields:

• MB_CODE_2026
• MB_CATEGORY_2026
• CHANGE_FLAG_2026
• CHANGE_LABEL_2026
• SA1_CODE_2026
• SA2_CODE_2026
• SA2_NAME_2026
• SA3_CODE_2026
• SA3_NAME_2026
• SA4_CODE_2026
• SA4_NAME_2026
• GCCSA_CODE_2026
• GCCSA_NAME_2026
• STATE_CODE_2026
• STATE_NAME_2026
• AUS_CODE_2026
• AUS_NAME_2026
• AREA_ALBERS_SQKM

This lists the Mesh Blocks that aggregate to form SA1s, SA2s, SA3s, SA4s, GCCSAs, States and Territories, and Australia. It also gives the area in square kilometres of the Mesh Block, based on Albers Equal Area Conic projection.

The Indigenous Structure is built from aggregations of Statistical Areas Level 1 (SA1).

There is one allocation table in .xlsx file format that relates Statistical Areas Level 1 (SA1s) to the Indigenous Structure hierarchy:

• Indigenous Structure Allocation Table

Allocation files listing the geographic hierarchies for each of the following geographies, are available for download in .xlsx format:

• Indigenous Locations (ILOC)
• Indigenous Areas (IARE)
• Indigenous Regions (IREG)

File contents:

Indigenous_Structure_Allocation_2026 includes the following fields:

• SA1_CODE_2026
• ILOC_CODE_2026
• ILOC_NAME_2026
• IARE_CODE_2026
• IARE_NAME_2026
• IREG_CODE_2026
• IREG_NAME_2026
• STATE_CODE_2026
• STATE_NAME_2026
• AUS_CODE_2026
• AUS_NAME_2026
• AREA_ALBERS_SQKM

ILOC_2026_AUST includes the following fields:

• ILOC_CODE_2026
• ILOC_NAME_2026
• IARE_CODE_2026
• IARE_NAME_2026
• IREG_CODE_2026
• IREG_NAME_2026
• STATE_CODE_2026
• STATE_NAME_2026
• AUS_CODE_2026
• AUS_NAME_2026
• AREA_ALBERS_SQKM

IARE_2026_AUST and IREG_2026_AUST include the same fields for all geographies above them in the hierarchy. All files give the area in square kilometres of each region, based on Albers Equal Area Conic projection.

Allocation files listing the geographic hierarchies for each of the following geographies are available for download in .xlsx format:

• Local Government Areas (LGA)
• State Electoral Divisions (SED)
• Postal Areas (POA)
• Suburbs and Localities (SAL)
• Destination Zones (DZN)

All Non ABS Structures list Mesh Blocks as the smallest unit used for aggregation.

File contents:

The .xlsx files generally contain the following fields:

• MB_CODE_2026
• <GEOGRAPHY>_CODE_<YEAR> where GEOGRAPHY equals LGA, SED, POA, SAL or DZN and YEAR equals the reference year of the boundaries
• <GEOGRAPHY>_NAME_<YEAR>
• STATE_CODE_2026 (excluded from POA as these boundaries cross state and territory borders)
• STATE_NAME_2026 (excluded from POA as these boundaries cross state and territory borders)
• AUS_CODE_2026
• AUS_NAME_2026
• AREA_ALBERS_SQKM

There are two allocation files provided for Destination Zones. MB_DZN_2026_AUST contains:

• MB_CODE_2026
• DZN_CODE_2026
• SA2_CODE_2026
• SA2_NAME_2026
• STATE_CODE_2026
• STATE_NAME_2026
• AUS_CODE_2026
• AUS_NAME_2026
• AREA_ALBERS_SQKM

DZN_SA2_2026_AUST contains:

• DZN_CODE_2026
• SA2_CODE_2026
• SA2_NAME_2026
• STATE_CODE_2026
• STATE_NAME_2026
• AUS_CODE_2026
• AUS_NAME_2026
• AREA_ALBERS_SQKM
• All files give the area in square kilometres of each base geography, based on Albers Equal Area Conic projection.