This enrolment data has been prepared for the information of individuals and organisations interested in the redistribution of federal electorates in the Australian Capital Territory.
Australian Capital Territory Enrolment data
What enrolment data is supplied?
For the purposes of the redistribution, the AEC has made available:
- enrolment in the Australian Capital Territory as at Tuesday 12 August 2025, the day on which the redistribution commenced
- projected enrolment in the Australian Capital Territory at Monday 8 April 2030.
Enrolment as at Tuesday 12 August 2025 is supplied as these figures were used for the Electoral Commissioner's determination of the redistribution quota under section 65 of the Commonwealth Electoral Act 1918 (Electoral Act). In making a proposed redistribution, the Redistribution Committee and the augmented Electoral Commission are bound by the Electoral Act to ensure that the number of electors in each proposed federal electorate does not deviate by more than 10 per cent above or below the redistribution quota. The redistribution quota for the Australian Capital Territory was determined by the Electoral Commissioner to be 107,293 as at Tuesday 12 August 2025.
Projected enrolment at Monday 8 April 2030 is supplied because, as far as practicable, the Redistribution Committee and the augmented Electoral Commission are required to ensure that the number of electors enrolled in each federal electorate at Monday 8 April 2030 (the projection time) will not deviate by more than 3.5 per cent above or below the projected enrolment quota. The projected enrolment quota for the Australian Capital Territory is 114,842 as at Monday 8 April 2030.
A growth (%) figure is also provided. This is the estimated growth rate for the period from Tuesday 12 August 2025 to Monday 8 April 2030. The growth rate shown for each SA1 is calculated by subtracting the actual enrolment from the projected enrolment, then dividing by the actual enrolment. The result is expressed as a percentage.
The following information is provided for each federal electorate in the Australian Capital Territory:
- the name of each SA2 in the federal electorate
- the identifier number of each SA1 or part SA1 in the federal electorate
- the two sets of enrolment figures and the growth rates applicable to each SA1, part SA1 and SA2 and for each existing federal electorate
- total enrolment for the federal electorate.
Why is SA2 level data included?
Statistical Areas Level 2 (SA2) are areas defined in the Australian Statistical Geography Standard (ASGS), and consist of one or more whole Statistical Areas Level 1 (SA1s). Wherever possible SA2s are based on officially gazetted Australian Capital Territory suburbs and localities. In urban areas SA2s largely conform to whole suburbs and combinations of whole suburbs, while in rural areas they define functional zones of social and economic links. Geography is also taken into account in SA2 design.
Why is data supplied at the SA1 level?
Enrolment figures are provided at the SA1 level, as this level is the smallest commonly used geographic building block. The SA1 figures can be aggregated to show the totals for SA2s, which are comprised of a number of SA1s. Being somewhat larger than SA1s, SA2s may be more manageable for those who are interested in less detailed analysis.
The figures shown are broken down according to federal electorate. Where a SA1 or SA2 crosses federal electorate boundaries, the SA1 or SA2 concerned will be listed in each federal electorate in which electors are enrolled. Only those electors resident in that federal electorate are included in the figures for such SA1s or SA2s.
How is projected enrolment calculated?
Following a recommendation by the Joint Standing Committee on Electoral Matters (JSCEM) that the AEC and the Australian Bureau of Statistics (ABS) work together on enrolment projections, the ABS has supplied enrolment projections to the AEC using AEC enrolment data as the base. The ABS has used a cohort-component method to project the enrolment of each SA1. The methodology is detailed in the paper included with the projected enrolment.
How is the enrolment data provided?
The file contains:
- federal electorate name
- SA2 name
- SA2 number
- SA1 number
- enrolment as at Tuesday 12 August 2025
- projected enrolment as at Monday 8 April 2030
- SA1 growth rate.
Spatial data and maps
The existing federal boundaries for the Australian Capital Territory are provided in a spatial format.
You will need GIS software to view and manipulate spatial data; however TAB files have been provided for those who do not have GIS software.
Spatial data and the maps of federal electorates in the Australian Capital Territory are available on the AEC maps and spatial data page.