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- Mount Barker Junction
South Australia · Postcode 5251
Mount Barker Junction postcode and suburb data
South Australia · Phone area code 08 · 27 km from Adelaide
Suburb snapshot
Mount Barker Junction 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 Mount Barker Junction ranks: household income is in the top 10% of SA suburbs; SEIFA decile 9 puts it in the top 20% of Australia for socio-economic advantage.
ABS Census 2021 · SEIFA 2021Detailed comparison table
Mount Barker Junction vs the SA average and the national average, using population-weighted 2021 Census data.
| Metric | Mount Barker Junction | SA avg | AU avg | Greater Adelaide |
|---|---|---|---|---|
| Household income/wk | $3,999 +SA | $1,545 | $1,836 | $1,620 |
| Mortgage/month | $1,200 -SA | $1,558 | $1,958 | $1,666 |
| Median age | 39 | 45.0 | 45.0 | 42.0 |
| SEIFA decile | 9/10 +SA | 5.0/10 | 6.0/10 | 7.0/10 |
| Unemployment | 0.0% -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.
Mount Barker Junction is a locality 27 km from Adelaide in South Australia, classified as inner regional by the ABS. The postcode is 5251. It falls within the Adelaide - Central and Hills region. The local government area is Mount Barker.
According to the 2021 Census, Mount Barker Junction has a population of 8 with a median age of 39. The median weekly household income is $3,999, above the SA average.
Housing in Mount Barker Junction includes a median monthly mortgage repayment of $1,200, 4 total dwellings. Housing costs in the area sit below the SA average.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, Mount Barker Junction scores in decile 9 out of 10, which is well above the national average.
Mount Barker Junction is part of the Adelaide Hills statistical area in South Australia.
Mount Barker Junction details
Location, Census, housing, SEIFA and geography fields used across this profile.
| Postcode | 5251 |
| State | South Australia (SA) |
| Phone Area Code | 08 |
| Population (2021) | 8 |
| Median Age | 39 years |
| Median Household Income (Census 2021) | $3,999/week |
| Median Personal Income (Census 2021) | $1,499/week |
| Median Monthly Mortgage (Census 2021) | $1,200 |
| Average Household Size | 3.3 persons |
| Area | 1.0 km² |
| Population Density | 8/km² |
| Total Dwellings | 4 |
| Australian Citizens | 100.0% |
| Unemployment Rate | 0.0% |
| SEIFA IRSAD Decile | 9/10 (well above average) |
| Latitude | -35.0248033 |
| Longitude | 138.868672 |
| Distance from Adelaide | 27 km |
| Region (SA4) | Adelaide - Central and Hills |
| Area (SA3) | Adelaide Hills |
| Local Government | Mount Barker |
| Federal Electorate | Mayo |
| State Electorate | Kavel |
| Time Zone | ACST (UTC+9:30), Australia/Adelaide (standard time) |
Age Profile
Show counts
| 0–14 years | 0 (0.0%) |
| 15–24 years | 0 (0.0%) |
| 25–44 years | 0 (0.0%) |
| 45–64 years | 6 (75.0%) |
| 65+ years | 0 (0.0%) |
SEIFA socio-economic index
Motor Vehicles per Dwelling
| No vehicle | 0 (0.0%) |
| 1 vehicle | 0 (0.0%) |
| 2 vehicles | 0 (0.0%) |
| 3+ vehicles | 3 (100.0%) |
Suburbs Near Mount Barker Junction
Same Postcode (5251)
More Mount Barker Junction 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.