South Australia · Postcode 5575
Brentwood postcode and suburb data
South Australia · Phone area code 08 · 104 km from Adelaide
Suburb snapshot
Brentwood 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.
Detailed comparison table
Brentwood vs the SA average and the national average, using population-weighted 2021 Census data.
| Metric | Brentwood | SA avg | AU avg |
|---|---|---|---|
| Household income/wk | $1,333 -SA | $1,545 | $1,836 |
| Rent/wk | $150 -SA | $308 | $390 |
| Mortgage/month | $867 -SA | $1,558 | $1,958 |
| Median age | 49 | 45.0 | 45.0 |
| SEIFA decile | 4/10 ≈SA | 5.0/10 | 6.0/10 |
| Unemployment | 0.0% -SA | 6.0% | 5.0% |
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.
Brentwood is a remote community in South Australia, with postcode 5575. It lies roughly 104 km from Adelaide, classified by the ABS as remote Australia. The area is administered by Yorke Peninsula.
According to the 2021 Census, Brentwood has a population of 71 with a median age of 49. The median weekly household income is $1,333, below the SA average. The Indigenous population is 5 (7.0% of residents).
Housing in Brentwood includes a median weekly rent of $150, median monthly mortgage repayment of $867, with 26 total dwellings. Housing costs in the area sit below the SA average. Owner-occupied dwellings (owned or mortgaged) make up 83.3% of housing.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, Brentwood scores in decile 4 out of 10, which is below the national average.
Brentwood is part of the Yorke Peninsula statistical area in South Australia.
Brentwood details
Location, Census, housing, SEIFA and geography fields used across this profile.
| Postcode | 5575 |
| State | South Australia (SA) |
| Phone Area Code | 08 |
| Population (2021) | 71 |
| Median Age | 49 years |
| Median Household Income (Census 2021) | $1,333/week |
| Median Personal Income (Census 2021) | $494/week |
| Median Weekly Rent (Census 2021) | $150 |
| Median Monthly Mortgage (Census 2021) | $867 |
| Average Household Size | 2.7 persons |
| Area | 53.3 km² |
| Population Density | 1/km² |
| Total Dwellings | 26 |
| Australian Citizens | 91.5% |
| Indigenous Population | 5 (7.0%) |
| Unemployment Rate | 0.0% |
| SEIFA IRSAD Decile | 4/10 (below average) |
| Latitude | -34.846909 |
| Longitude | 137.4608382 |
| Distance from Adelaide | 104 km |
| Region (SA4) | Barossa - Yorke - Mid North |
| Area (SA3) | Yorke Peninsula |
| Local Government | Yorke Peninsula |
| Federal Electorate | Grey |
| State Electorate | Narungga |
| Time Zone | ACST (UTC+9:30), Australia/Adelaide (standard time) |
Age Profile
Show counts
| 0–14 years | 12 (16.9%) |
| 15–24 years | 8 (11.3%) |
| 25–44 years | 8 (11.3%) |
| 45–64 years | 18 (25.4%) |
| 65+ years | 22 (31.0%) |
Housing Tenure
SEIFA socio-economic index
Health Conditions (2021 Census)
| Arthritis | 17 (23.9%) |
| Diabetes | 7 (9.9%) |
| Asthma | 4 (5.6%) |
| Heart Disease | 4 (5.6%) |
| Cancer | 4 (5.6%) |
Long-term health conditions self-reported in the 2021 Census. Persons may report more than one condition.
Motor Vehicles per Dwelling
| No vehicle | 0 (0.0%) |
| 1 vehicle | 9 (29.0%) |
| 2 vehicles | 11 (35.5%) |
| 3+ vehicles | 11 (35.5%) |
Suburbs Near Brentwood
Same Postcode (5575)
More Brentwood 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.