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Penfield Gardens Postcode
South Australia
Income, rent and SEIFA figures are from the ABS 2021 Census and are reported in 2021 dollars, not adjusted for subsequent inflation.
How Penfield Gardens Compares
Penfield Gardens vs the SA average and the national average (2021 Census, population-weighted).
| Metric | Penfield Gardens | SA avg | AU avg | Greater Adelaide |
|---|---|---|---|---|
| Household income/wk | $1,593 ≈SA | $1,545 | $1,836 | $1,620 |
| Rent/wk | $383 +SA | $308 | $390 | $329 |
| Mortgage/month | $2,000 +SA | $1,558 | $1,958 | $1,666 |
| Median age | 48 | 45.0 | 45.0 | 42.0 |
| SEIFA decile | 4/10 ≈SA | 5.0/10 | 6.0/10 | 7.0/10 |
| Unemployment | 3.2% -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.
Postcode 5121 covers Penfield Gardens, an inland suburb of Adelaide about 30 km from the city centre. It forms part of the Adelaide - North region of South Australia. Local government services are provided by Playford.
According to the 2021 Census, Penfield Gardens has a population of 304 with a median age of 48. The median weekly household income is $1,593, close to the SA average. The unemployment rate is 3.2%, lower than the SA average. The Indigenous population is 3 (1.0% of residents).
Housing in Penfield Gardens includes a median weekly rent of $383, median monthly mortgage repayment of $2,000, with 94 total dwellings. These housing costs sit above the SA average. Owner-occupied dwellings (owned or mortgaged) make up 90.0% of housing.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, Penfield Gardens scores in decile 4 out of 10, which is below the national average.
Penfield Gardens is part of the Playford statistical area in South Australia.
Penfield Gardens Details
| Postcode | 5121 |
| State | South Australia (SA) |
| Phone Area Code | 08 |
| Population (2021) | 304 |
| Median Age | 48 years |
| Median Household Income (Census 2021) | $1,593/week |
| Median Personal Income (Census 2021) | $619/week |
| Median Weekly Rent (Census 2021) | $383 |
| Median Monthly Mortgage (Census 2021) | $2,000 |
| Average Household Size | 3 persons |
| Area | 15.1 km² |
| Population Density | 20/km² |
| Total Dwellings | 94 |
| Australian Citizens | 87.8% |
| Indigenous Population | 3 (1.0%) |
| Unemployment Rate | 3.2% |
| SEIFA IRSAD Decile | 4/10 (below average) |
| Latitude | -34.6584706 |
| Longitude | 138.6132442 |
| Distance from Adelaide | 30 km |
| Region (SA4) | Adelaide - North |
| Area (SA3) | Playford |
| Local Government | Playford |
| Federal Electorate | Spence |
Age Profile
Show counts
| 0–14 years | 43 (14.1%) |
| 15–24 years | 38 (12.5%) |
| 25–44 years | 61 (20.1%) |
| 45–64 years | 77 (25.3%) |
| 65+ years | 82 (27.0%) |
Housing Tenure
SEIFA Socio-economic Index
Index of Relative Socio-economic Advantage and Disadvantage (IRSAD), decile 4 of 10. Higher deciles indicate more advantage.
Health Conditions (2021 Census)
| Arthritis | 31 (10.2%) |
| Diabetes | 28 (9.2%) |
| Asthma | 28 (9.2%) |
| Heart Disease | 18 (5.9%) |
| Lung Condition | 5 (1.6%) |
| Cancer | 4 (1.3%) |
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 | 20 (22.5%) |
| 2 vehicles | 26 (29.2%) |
| 3+ vehicles | 43 (48.3%) |
Suburbs Near Penfield Gardens
Same Postcode (5121)
More Penfield 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.