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South Australia · Postcode 5158
O'Halloran Hill postcode and suburb data
South Australia · Phone area code 08 · 16 km from Adelaide
Suburb snapshot
O'Halloran Hill 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 O'Halloran Hill ranks: rents are among the top 10% in SA.
ABS Census 2021 · SEIFA 2021Detailed comparison table
O'Halloran Hill vs the SA average and the national average, using population-weighted 2021 Census data.
| Metric | O'Halloran Hill | SA avg | AU avg | Greater Adelaide |
|---|---|---|---|---|
| Household income/wk | $1,558 ≈SA | $1,545 | $1,836 | $1,620 |
| Rent/wk | $350 +SA | $308 | $390 | $329 |
| Mortgage/month | $1,500 ≈SA | $1,558 | $1,958 | $1,666 |
| Median age | 40 | 45.0 | 45.0 | 42.0 |
| SEIFA decile | 6/10 ≈SA | 5.0/10 | 6.0/10 | 7.0/10 |
| Unemployment | 4.5% -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 5158 covers O'Halloran Hill, an inland suburb of Adelaide about 16 km from the city centre. It forms part of the Adelaide - South region of South Australia. Local government services are provided by Onkaparinga.
According to the 2021 Census, O'Halloran Hill has a population of 2,722 with a median age of 40. The median weekly household income is $1,558, close to the SA average. The unemployment rate is 4.5%, lower than the SA average. The Indigenous population is 35 (1.3% of residents).
Housing in O'Halloran Hill includes a median weekly rent of $350, median monthly mortgage repayment of $1,500, with 1,095 total dwellings. These housing costs sit above the SA average. Owner-occupied dwellings (owned or mortgaged) make up 81.8% of housing.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, O'Halloran Hill scores in decile 6 out of 10, which is around the national average.
O'Halloran Hill is served by IQRA College.
O'Halloran Hill is part of the Onkaparinga statistical area in South Australia.
O'Halloran Hill details
Location, Census, housing, SEIFA and geography fields used across this profile.
| Postcode | 5158 |
| State | South Australia (SA) |
| Phone Area Code | 08 |
| Population (2021) | 2,722 |
| Median Age | 40 years |
| Median Household Income (Census 2021) | $1,558/week |
| Median Personal Income (Census 2021) | $796/week |
| Median Weekly Rent (Census 2021) | $350 |
| Median Monthly Mortgage (Census 2021) | $1,500 |
| Average Household Size | 2.5 persons |
| Area | 7.8 km² |
| Population Density | 348/km² |
| Total Dwellings | 1,095 |
| Australian Citizens | 92.0% |
| Indigenous Population | 35 (1.3%) |
| Unemployment Rate | 4.5% |
| SEIFA IRSAD Decile | 6/10 (average) |
| Latitude | -35.064 |
| Longitude | 138.553 |
| Distance from Adelaide | 16 km |
| Region (SA4) | Adelaide - South |
| Area (SA3) | Onkaparinga |
| Local Government | Onkaparinga |
| Federal Electorate | Kingston |
| State Electorate | Reynell |
| Time Zone | ACST (UTC+9:30), Australia/Adelaide (standard time) |
Age Profile
Show counts
| 0–14 years | 491 (18.0%) |
| 15–24 years | 269 (9.9%) |
| 25–44 years | 802 (29.5%) |
| 45–64 years | 649 (23.8%) |
| 65+ years | 512 (18.8%) |
Housing Tenure
SEIFA socio-economic index
Health Conditions (2021 Census)
| Asthma | 304 (11.2%) |
| Arthritis | 301 (11.1%) |
| Diabetes | 159 (5.8%) |
| Heart Disease | 134 (4.9%) |
| Cancer | 92 (3.4%) |
| Lung Condition | 54 (2.0%) |
| Dementia | 7 (0.3%) |
Long-term health conditions self-reported in the 2021 Census. Persons may report more than one condition.
Motor Vehicles per Dwelling
| No vehicle | 33 (3.0%) |
| 1 vehicle | 357 (32.7%) |
| 2 vehicles | 470 (43.1%) |
| 3+ vehicles | 231 (21.2%) |
Schools in O'Halloran Hill
ACARA 2025 school profiles for schools located in O'Halloran Hill. ICSEA is shown where ACARA publishes it.
Suburbs Near O'Halloran Hill
Same Postcode (5158)
More O'Halloran Hill 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.