Marion
101,229 residents (ABS estimated resident population, 30 June 2025) across 56 km², 23 suburbs. Council website: marion.sa.gov.au.
Council series run to July 2026.
Population
101,229
ABS estimated resident population, 30 June 2025 · +1.2% in a year
Density
1,821/km²
56 km² · ERP 2025 over the ABS 2024 boundary
Council-wide house median
$850k
Established-house transfers across the whole council, FY 2023-24 (ABS)
Federal grants per resident
$40
Financial Assistance Grant 2025-26 over ERP 2025
Dwelling approvals
7.7 per 1,000
Residents, 12 months to July 2026 (ABS Building Approvals)
Advantage decile
8 of 10
SEIFA 2021 IRSAD, national (10 = most advantaged)
Suburbs
23
Where it holds most residents (ABS mesh-block allocation)
Trends
Council-level series. Each chart names its source and period.
People and housing
Council-wide figures from the ABS Census of 2021 and SEIFA 2021 (national deciles, 10 = most advantaged).
- Median age
- 39
- Median household income
- $1,557/week
- Median rent
- $330/week
- Median mortgage repayment
- $1,699/month
- Households renting
- 29.6%
- Average household
- 2.4 people
- Advantage and disadvantage (IRSAD)
- decile 8 of 10
- Disadvantage (IRSD)
- decile 8 of 10
Suburbs
23 suburbs where Marion holds most residents, plus 3 it shares with a neighbouring council (share of residents shown). Population is Census 2021 for the whole suburb. A median here is the suburb’s own Valuer-General median — suburbs without one are blank, never filled with the council figure.
| Suburb | Population | In this council | Median house (VG) | Flood / bushfire | IRSAD |
|---|---|---|---|---|---|
| Hallett Cove | 12,512 | All | $1.0MJune 2026 | – / 0% | 8 |
| Sheidow Park | 6,731 | All | $940kJune 2026 | – / 0% | 7 |
| Warradale | 5,801 | All | $1.4MJune 2026 | 49% / 0% | 8 |
| Glengowrie | 5,767 | All | $1.6MJune 2026 | 35% / 0% | 9 |
| Mitchell Park (SA) | 5,754 | All | $970kJune 2026 | – / 4% | 2 |
| South Plympton | 4,721 | All | $1.3MJune 2026 | – / 0% | 6 |
| Edwardstown | 4,514 | All | $955kJune 2026 | – / 0% | 4 |
| Marion | 4,101 | All | $1.4MJune 2026 | 14% / 0% | 6 |
| Oaklands Park | 3,948 | All | $955kJune 2026 | 30% / 0% | 3 |
| Plympton Park | 3,881 | All | $1.3MJune 2026 | – / 0% | 6 |
| Morphettville | 3,686 | All | $1.1MJune 2026 | – / 0% | 4 |
| Ascot Park | 3,588 | All | $1.0MJune 2026 | – / 0% | 4 |
| Seacombe Gardens | 3,373 | All | $1.1MJune 2026 | 41% / 0% | 4 |
| Park Holme | 3,199 | All | $1.1MJune 2026 | – / 0% | 4 |
| Clovelly Park | 3,126 | All | $1.1MJune 2026 | – / 0% | 6 |
| Trott Park | 3,124 | All | $885kJune 2026 | – / 0% | 6 |
| Dover Gardens | 3,062 | All | $1.1MJune 2026 | 51% / 0% | 5 |
| Glandore | 3,041 | 57% | $1.3MJune 2026 | – / 0% | 7 |
| Sturt (SA) | 2,787 | All | $1.0MJune 2026 | 28% / 41% | 3 |
| O'Halloran Hill | 2,722 | 13% | $880kJune 2026 | 0% / 47% | 6 |
| Seaview Downs | 2,718 | All | $1.0MJune 2026 | 7% / 0% | 8 |
| Seacliff Park | 2,644 | 39% | $1.3MJune 2026 | 12% / 0% | 8 |
| Marino | 2,277 | All | $1.5MJune 2026 | 6% / 0% | 10 |
| Seacombe Heights | 1,549 | All | $1.1MJune 2026 | 10% / 1% | 8 |
| Darlington (SA) | 1,275 | 49% | $1.0MJune 2026 | 9% / 81% | 6 |
| Tonsley | 743 | All | $725kJune 2026 | – / 54% | 4 |
Hazards
Share of each member suburb's land inside the mapped layer, averaged across the council weighted by the residents each suburb contributes. Only suburbs a source covers count; the rest are left out, not counted as zero.
Flood planning land
29%
Over 13 of 26 member suburbs (the rest are not mapped)
Show the layer on the map →Suburb prices
Across the 23 member suburbs with their own Valuer-General median (unweighted; each suburb's latest figure, periods ending June 2026).
- Lowest suburb median
- $725k
- Median of suburb medians
- $1.1M
- Highest suburb median
- $1.6M
Representation
Federal electorates and state districts covering the council, by share of the residents its suburbs contribute (each suburb counts once, for the seat containing a representative interior point).
Federal electorates
- Boothby · Louise MILLER-FROST (ALP)76%
- Kingston · Amanda RISHWORTH (ALP)24%
State districts
- Black · David Speirs (LIB)30%
- Gibson · Sarah Andrews (ALP)24%
- Elder · Nadia Clancy (ALP)15%
- Badcoe · Jayne Stinson (ALP)15%
- Morphett · Stephen Patterson (LIB)13%
- Davenport · Erin Thompson (ALP)3%
Neighbouring councils
Councils in the same state whose suburbs share a boundary with this one's, and councils it splits a suburb with.
Compare it with every South Australia council on the council map or the South Australia council list.
Boundaries: ABS ASGS Edition 3, LGA 2024 boundaries; suburbs allocated by 2021 mesh block, weighted by Census 2021 residents. Population: ABS estimated resident population 2025. Census 2021 and SEIFA 2021: ABS. Council-wide medians: ABS Data by Region. Approvals: ABS Building Approvals. Grants: Financial Assistance Grants, Dept of Infrastructure. Suburb prices: state Valuer-General. Flood and bushfire: state planning layers. Observed water: Geoscience Australia DEA Water Observations. Website and identity: Wikidata (CC0). ABS, Dept of Infrastructure and state government data CC BY 4.0. Council facts loaded 2026-09-24.