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South Australia · Postcode 5047
Seacombe Gardens postcode and suburb data
South Australia · Phone area code 08 · 12 km from Adelaide
Suburb snapshot
Seacombe Gardens at a glance vs SA
Fast facts and benchmark bars show the suburb's key postcode, Census, SEIFA, school and LGA signals in context.
Quick facts
Benchmarks against SA
Income, rent and SEIFA figures are from the ABS 2021 Census and are reported in 2021 dollars, not adjusted for subsequent inflation.
Where Seacombe Gardens ranks: rents are among the top 10% in SA.
ABS Census 2021 · SEIFA 2021Detailed comparison table
Seacombe Gardens vs the SA average and the national average, using population-weighted 2021 Census data.
| Metric | Seacombe Gardens | SA avg | AU avg | Greater Adelaide |
|---|---|---|---|---|
| Household income/wk | $1,420 ≈SA | $1,545 | $1,836 | $1,620 |
| Rent/wk | $370 +SA | $308 | $390 | $329 |
| Mortgage/month | $1,672 ≈SA | $1,558 | $1,958 | $1,666 |
| Median age | 35 | 45.0 | 45.0 | 42.0 |
| SEIFA decile | 4/10 ≈SA | 5.0/10 | 6.0/10 | 7.0/10 |
| Unemployment | 4.6% -SA | 6.0% | 5.0% | 6.0% |
Green pill = at least 10% above the SA average; red = at least 10% below; grey = within 10%. For unemployment, colour polarity is inverted: lower is better.
Seacombe Gardens is a coastal suburb of Adelaide in South Australia, with postcode 5047. It sits about 12 km from the Adelaide CBD, within the Marion local government area. The suburb footprint covers roughly 1.0 square kilometres.
According to the 2021 Census, Seacombe Gardens has a population of 3,373 with a median age of 35. The median weekly household income is $1,420, close to the SA average. The unemployment rate is 4.6%, lower than the SA average. The Indigenous population is 72 (2.1% of residents).
Housing in Seacombe Gardens includes a median weekly rent of $370, median monthly mortgage repayment of $1,672, with 1,416 total dwellings. These housing costs sit above the SA average. Rental properties account for 43.7% of dwellings.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, Seacombe Gardens scores in decile 4 out of 10, which is below the national average.
Schools in Seacombe Gardens include Stella Maris Parish School and Darlington Primary School.
Seacombe Gardens is part of the Onkaparinga statistical area in South Australia.
Seacombe Gardens details
Location, Census, housing, SEIFA and geography fields used across this profile.
| Postcode | 5047 |
| State | South Australia (SA) |
| Phone Area Code | 08 |
| Population (2021) | 3,373 |
| Median Age | 35 years |
| Median Household Income (Census 2021) | $1,420/week |
| Median Personal Income (Census 2021) | $715/week |
| Median Weekly Rent (Census 2021) | $370 |
| Median Monthly Mortgage (Census 2021) | $1,672 |
| Average Household Size | 2.3 persons |
| Area | 1.0 km² |
| Population Density | 3402/km² |
| Total Dwellings | 1,416 |
| Australian Citizens | 79.6% |
| Indigenous Population | 72 (2.1%) |
| Unemployment Rate | 4.6% |
| SEIFA IRSAD Decile | 4/10 (below average) |
| Latitude | -35.026 |
| Longitude | 138.545 |
| Distance from Adelaide | 12 km |
| Region (SA4) | Adelaide - South |
| Area (SA3) | Onkaparinga |
| Local Government | Marion |
| Federal Electorate | Boothby |
| State Electorate | Gibson |
| Time Zone | ACST (UTC+9:30), Australia/Adelaide (standard time) |
Age Profile
Show counts
| 0–14 years | 523 (15.5%) |
| 15–24 years | 457 (13.5%) |
| 25–44 years | 1,125 (33.4%) |
| 45–64 years | 674 (20.0%) |
| 65+ years | 579 (17.2%) |
Housing Tenure
SEIFA socio-economic index
Health Conditions (2021 Census)
| Asthma | 298 (8.8%) |
| Arthritis | 289 (8.6%) |
| Diabetes | 172 (5.1%) |
| Heart Disease | 127 (3.8%) |
| Cancer | 92 (2.7%) |
| Lung Condition | 70 (2.1%) |
| Dementia | 16 (0.5%) |
Long-term health conditions self-reported in the 2021 Census. Persons may report more than one condition.
Motor Vehicles per Dwelling
| No vehicle | 160 (11.4%) |
| 1 vehicle | 594 (42.4%) |
| 2 vehicles | 481 (34.4%) |
| 3+ vehicles | 165 (11.8%) |
Schools in Seacombe Gardens
ACARA 2025 school profiles for schools located in Seacombe Gardens. ICSEA is shown where ACARA publishes it.
Suburbs Near Seacombe Gardens
Same Postcode (5047)
More Seacombe Gardens Data
Page last reviewed . Data sources: Australian Bureau of Statistics 2021 Census (CC BY 4.0), SEIFA 2021 IRSAD, ACARA school profiles 2025. How this data is sourced.