Redistribution quota for South Australia
The Electoral Commissioner has determined the redistribution quota for the redistribution of South Australia.
The redistribution quota for South Australia is calculated by dividing the enrolment numbers at the date the redistribution commenced (12 August 2025) by the number of members of the House of Representatives to which South Australia is entitled.
|
Number of electors enrolled in South Australia as at the end of the day on which the redistribution commenced |
1,307,863 |
|
Number of members of the House of Representatives to which South Australia is entitled |
10 |
|
Redistribution quota for South Australia |
130,786 |
|
Permissible maximum number of electors in a South Australian electorate (Redistribution quota +10%) |
143,864 |
|
Permissible minimum number of electors in a South Australian electorate (Redistribution quota -10%) |
117,708 |
The following table shows the number of electors enrolled in each electorate as at 12 August 2025.
| Electorate | Number of electors | Percentage deviation from the redistribution quota |
|---|---|---|
|
Adelaide |
130,638 |
-0.11% |
|
Barker |
128,035 |
-2.10% |
|
Boothby |
128,867 |
-1.47% |
|
Grey |
129,724 |
-0.81% |
|
Hindmarsh |
130,799 |
+0.01% |
|
Kingston |
128,141 |
-2.02% |
|
Makin |
123,230 |
-5.78% |
|
Mayo |
139,164 |
+6.41% |
|
Spence |
139,392 |
+6.58% |
|
Sturt |
129,873 |
-0.70% |
|
TOTAL |
1,307,863 |
|
Notes:
- The Electoral Commissioner determined the quota on 21 August 2025.
- The number of electors enrolled in South Australia is extracted from the AEC’s Roll Management System.
- The redistribution quota is an essential element of a redistribution and a requirement of the Commonwealth Electoral Act 1918 (section 65).
Projected enrolment quota for South Australia
Projection time
The projection time for a redistribution is calculated in accordance with section 63A of the Electoral Act.
The “starting time” to calculate is the date when the augmented Electoral Commission will cause the names and boundaries of federal electorates in South Australia to be published in the Gazette. For this redistribution, the starting time is 8 October 2026.
The standard projection time of three years and six months will apply for this redistribution. The projection time for this redistribution is therefore 8 April 2030.
Projected enrolment quota
The projected enrolment quota is calculated by dividing the projected enrolment numbers in South Australia at the projection time by the number of members of the House of Representatives to which South Australia is entitled.
|
Estimated number of electors enrolled in South Australia at the projection time (8 April 2030) |
1,363,333 |
|
Number of members of the House of Representatives to which South Australia is entitled |
10 |
|
Projected enrolment quota for South Australia |
136,333 |
|
Permissible maximum number of projected electors in a South Australian electorate (projected enrolment quota + 3.5%) |
141,104 |
|
Permissible minimum number of projected electors in a South Australian electorate (projected enrolment quota – 3.5%) |
131,562 |
The following table shows the number of electors projected to be enrolled in each electorate as at 8 April 2030.
| Electorate | Projected Electors | Percentage deviation from the projected enrolment quota |
|---|---|---|
|
Adelaide |
135,319 |
-0.74% |
|
Barker |
131,186 |
-3.78% |
|
Boothby |
133,351 |
-2.19% |
|
Grey |
132,595 |
-2.74% |
|
Hindmarsh |
137,208 |
0.64% |
|
Kingston |
133,610 |
-2.00% |
|
Makin |
125,587 |
-7.88% |
|
Mayo |
147,436 |
8.14% |
|
Spence |
153,055 |
12.27% |
|
Sturt |
133,986 |
-1.72% |