Blakiston 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 Blakiston Compares
Blakiston vs the SA average and the national average (2021 Census, population-weighted).
| Metric | Blakiston | SA avg | AU avg | Greater Adelaide |
|---|---|---|---|---|
| Household income/wk | $2,600 +SA | $1,545 | $1,836 | $1,620 |
| Rent/wk | $550 +SA | $308 | $390 | $329 |
| Mortgage/month | $2,134 +SA | $1,558 | $1,958 | $1,666 |
| Median age | 46 | 45.0 | 45.0 | 42.0 |
| SEIFA decile | 9/10 +SA | 5.0/10 | 6.0/10 | 7.0/10 |
| Unemployment | 2.0% -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 5250 covers Blakiston, an inland suburb of Adelaide about 29 km from the city centre. It forms part of the Adelaide - Central and Hills region of South Australia. Local government services are provided by Mount Barker.
According to the 2021 Census, Blakiston has a population of 377 with a median age of 46. The median weekly household income is $2,600, above the SA average. The unemployment rate is 2.0%, lower than the SA average.
Housing in Blakiston includes a median weekly rent of $550, median monthly mortgage repayment of $2,134, with 120 total dwellings. These housing costs sit above the SA average. Owner-occupied dwellings (owned or mortgaged) make up 96.7% of housing.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, Blakiston scores in decile 9 out of 10, which is well above the national average.
Blakiston is part of the Adelaide Hills statistical area in South Australia.
Blakiston Details
| Postcode | 5250 |
| State | South Australia (SA) |
| Phone Area Code | 08 |
| Population (2021) | 377 |
| Median Age | 46 years |
| Median Household Income (Census 2021) | $2,600/week |
| Median Personal Income (Census 2021) | $810/week |
| Median Weekly Rent (Census 2021) | $550 |
| Median Monthly Mortgage (Census 2021) | $2,134 |
| Average Household Size | 3 persons |
| Area | 2.1 km² |
| Population Density | 180/km² |
| Total Dwellings | 120 |
| Australian Citizens | 96.0% |
| Unemployment Rate | 2.0% |
| SEIFA IRSAD Decile | 9/10 (well above average) |
| Latitude | -35.05 |
| Longitude | 138.883333 |
| Distance from Adelaide | 29 km |
| Region (SA4) | Adelaide - Central and Hills |
| Area (SA3) | Adelaide Hills |
| Local Government | Mount Barker |
| Federal Electorate | Mayo |
Age Profile
Show counts
| 0–14 years | 63 (16.7%) |
| 15–24 years | 59 (15.6%) |
| 25–44 years | 52 (13.8%) |
| 45–64 years | 136 (36.1%) |
| 65+ years | 65 (17.2%) |
Housing Tenure
SEIFA Socio-economic Index
Index of Relative Socio-economic Advantage and Disadvantage (IRSAD), decile 9 of 10. Higher deciles indicate more advantage.
Health Conditions (2021 Census)
| Asthma | 40 (10.6%) |
| Arthritis | 37 (9.8%) |
| Heart Disease | 20 (5.3%) |
| Diabetes | 16 (4.2%) |
| Cancer | 16 (4.2%) |
| Lung Condition | 3 (0.8%) |
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 | 16 (12.8%) |
| 2 vehicles | 47 (37.6%) |
| 3+ vehicles | 62 (49.6%) |
Suburbs Near Blakiston
Same Postcode (5250)
More Blakiston 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.