Onkaparinga
184,827 residents (ABS estimated resident population, 30 June 2025) across 518 km², 48 suburbs. Council website: onkaparingacity.com/Home.
Council series run to July 2026.
Population
184,827
ABS estimated resident population, 30 June 2025 · +0.9% in a year
Density
357/km²
518 km² · ERP 2025 over the ABS 2024 boundary
Council-wide house median
$682k
Established-house transfers across the whole council, FY 2023-24 (ABS)
Federal grants per resident
$54
Financial Assistance Grant 2025-26 over ERP 2025
Dwelling approvals
7.2 per 1,000
Residents, 12 months to July 2026 (ABS Building Approvals)
Advantage decile
5 of 10
SEIFA 2021 IRSAD, national (10 = most advantaged)
Suburbs
48
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
- 41
- Median household income
- $1,410/week
- Median rent
- $312/week
- Median mortgage repayment
- $1,449/month
- Households renting
- 22.6%
- Average household
- 2.4 people
- Advantage and disadvantage (IRSAD)
- decile 5 of 10
- Disadvantage (IRSD)
- decile 6 of 10
Suburbs
48 suburbs where Onkaparinga 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 |
|---|---|---|---|---|---|
| Morphett Vale | 24,002 | All | $824kJune 2026 | – / 26% | 2 |
| Happy Valley (SA) | 11,420 | All | $896kJune 2026 | 3% / 93% | 6 |
| Woodcroft (SA) | 11,326 | All | $915kJune 2026 | <1% / 77% | 5 |
| Aberfoyle Park | 11,234 | All | $940kJune 2026 | – / 76% | 7 |
| Aldinga Beach | 10,667 | All | $925kJune 2026 | 9% / 83% | 2 |
| Flagstaff Hill | 10,184 | All | $1.1MJune 2026 | – / 100% | 9 |
| Seaford Rise | 6,105 | All | $920kJune 2026 | – / 48% | 3 |
| Christies Beach | 5,962 | All | $1.1MJune 2026 | – / 36% | 2 |
| Christie Downs | 5,239 | All | $788kJune 2026 | – / 0% | 1 |
| Seaford Meadows | 5,102 | All | $900kJune 2026 | 23% / 14% | 4 |
| Reynella | 4,836 | All | $850kJune 2026 | – / 0% | 3 |
| Seaford (SA) | 4,493 | All | $973kJune 2026 | – / 36% | 3 |
| Hackham | 4,491 | All | $800kJune 2026 | 1% / 74% | 1 |
| Coromandel Valley | 4,380 | 70% | $1.2MJune 2026 | – / 100% | 10 |
| Huntfield Heights | 4,199 | All | $808kJune 2026 | 5% / 34% | 1 |
| McLaren Vale | 4,061 | All | $1.0MJune 2026 | 2% / 100% | 6 |
| Noarlunga Downs | 4,031 | All | $840kJune 2026 | 21% / 19% | 2 |
| Hackham West | 3,620 | All | $785kJune 2026 | 0% / 0% | 1 |
| Old Reynella | 3,458 | All | $930kJune 2026 | – / 21% | 4 |
| Moana | 3,316 | All | $1.1MJune 2026 | 7% / 95% | 6 |
| Port Noarlunga | 3,245 | All | $958kJune 2026 | 23% / 46% | 4 |
| Port Noarlunga South | 3,058 | All | $899kJune 2026 | 33% / 47% | 5 |
| O'Halloran Hill | 2,722 | 87% | $880kJune 2026 | 0% / 47% | 6 |
| Sellicks Beach | 2,705 | All | $948kJune 2026 | 3% / 99% | 3 |
| Onkaparinga Hills | 2,610 | All | $988kJune 2026 | 0% / 99% | 7 |
| Willunga | 2,445 | All | $1.2MJune 2026 | 0% / 99% | 8 |
| Reynella East | 1,990 | All | $805kJune 2026 | 11% / 4% | 3 |
| O'Sullivan Beach | 1,844 | All | $820kJune 2026 | – / 78% | 1 |
| Port Willunga | 1,785 | All | $1.0MJune 2026 | – / 93% | 3 |
| McLaren Flat | 1,625 | All | $935kJune 2026 | 2% / 100% | 8 |
| Old Noarlunga | 1,531 | All | $899kJune 2026 | 13% / 97% | 2 |
| Darlington (SA) | 1,275 | 51% | $1.0MJune 2026 | 9% / 81% | 6 |
| Maslin Beach | 1,213 | All | $955kJune 2026 | 0% / 99% | 4 |
| Seaford Heights | 1,079 | All | $900kJune 2026 | – / 67% | 8 |
| Kangarilla | 905 | 94% | $1.1MMar 2026 | <1% / 100% | 8 |
| Chandlers Hill | 792 | All | $1.1MJune 2026 | 0% / 100% | 10 |
| Aldinga | 764 | All | $899kJune 2026 | 1% / 99% | 5 |
| Clarendon (SA) | 643 | All | $880kMar 2026 | <1% / 100% | 9 |
| Cherry Gardens | 633 | All | 0% / 100% | 9 | |
| Ironbank | 537 | 37% | $1.3MJune 2026 | – / 100% | 10 |
| Willunga South | 470 | All | $1.4MMar 2026 | 0% / 100% | 8 |
| Blewitt Springs | 346 | All | 0% / 100% | 8 | |
| Coromandel East | 345 | All | <1% / 100% | 10 | |
| Whites Valley | 313 | All | $400kDec 2018 | 0% / 100% | 7 |
| Sellicks Hill | 299 | 93% | 0% / 100% | 7 | |
| Tatachilla | 231 | All | 0% / 100% | 9 | |
| Noarlunga Centre | 203 | All | $762kJune 2026 | – / 0% | 2 |
| Kuitpo | 198 | 27% | – / 100% | 8 | |
| The Range (SA) | 159 | 65% | 0% / 100% | 9 | |
| Lonsdale | 23 | All | $2.5MMar 2024 | 0% / 46% | |
| Dorset Vale | 16% | – / 100% |
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
7%
Over 34 of 51 member suburbs (the rest are not mapped)
Show the layer on the map →Suburb prices
Across the 42 member suburbs with their own Valuer-General median (unweighted; each suburb's latest figure, periods ending Dec 2018 to June 2026).
- Lowest suburb median
- $400k
- Median of suburb medians
- $923k
- Highest suburb median
- $2.5M
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
- Kingston · Amanda RISHWORTH (ALP)81%
- Mayo · Rebekha SHARKIE (XEN)19%
- Boothby · Louise MILLER-FROST (ALP)1%
State districts
- Reynell · Katrine Hildyard (ALP)23%
- Kaurna · Chris Picton (ALP)22%
- Davenport · Erin Thompson (ALP)21%
- Hurtle Vale · Nat Cook (ALP)16%
- Mawson · Leon Bignell (ALP)15%
- Heysen · Josh Teague (LIB)2%
- Waite · Catherine Hutchesson (ALP)2%
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.