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South Australia · Postcode 5114
One Tree Hill postcode and suburb data
South Australia · Phone area code 08 · 28 km from Adelaide
Suburb snapshot
One Tree 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 One Tree Hill ranks: household income is in the top 10% of SA suburbs.
ABS Census 2021 · SEIFA 2021Detailed comparison table
One Tree Hill vs the SA average and the national average, using population-weighted 2021 Census data.
| Metric | One Tree Hill | SA avg | AU avg | Greater Adelaide |
|---|---|---|---|---|
| Household income/wk | $2,317 +SA | $1,545 | $1,836 | $1,620 |
| Rent/wk | $305 ≈SA | $308 | $390 | $329 |
| Mortgage/month | $1,863 +SA | $1,558 | $1,958 | $1,666 |
| Median age | 45 | 45.0 | 45.0 | 42.0 |
| SEIFA decile | 8/10 +SA | 5.0/10 | 6.0/10 | 7.0/10 |
| Unemployment | 3.5% -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.
One Tree Hill is a locality 28 km from Adelaide in South Australia, classified as inner regional by the ABS. The postcode is 5114. It falls within the Adelaide - North region. The local government area is Playford.
According to the 2021 Census, One Tree Hill has a population of 1,043 with a median age of 45. The median weekly household income is $2,317, above the SA average. The unemployment rate is 3.5%, lower than the SA average. The Indigenous population is 7 (0.7% of residents).
Housing in One Tree Hill includes a median weekly rent of $305, median monthly mortgage repayment of $1,863, with 335 total dwellings. These housing costs sit above the SA average. Owner-occupied dwellings (owned or mortgaged) make up 95.3% of housing.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, One Tree Hill scores in decile 8 out of 10, which is above the national average.
One Tree Hill is served by One Tree Hill Primary School.
One Tree Hill is part of the Tea Tree Gully statistical area in South Australia.
One Tree Hill details
Location, Census, housing, SEIFA and geography fields used across this profile.
| Postcode | 5114 |
| State | South Australia (SA) |
| Phone Area Code | 08 |
| Population (2021) | 1,043 |
| Median Age | 45 years |
| Median Household Income (Census 2021) | $2,317/week |
| Median Personal Income (Census 2021) | $842/week |
| Median Weekly Rent (Census 2021) | $305 |
| Median Monthly Mortgage (Census 2021) | $1,863 |
| Average Household Size | 3 persons |
| Area | 23.4 km² |
| Population Density | 44/km² |
| Total Dwellings | 335 |
| Australian Citizens | 91.3% |
| Indigenous Population | 7 (0.7%) |
| Unemployment Rate | 3.5% |
| SEIFA IRSAD Decile | 8/10 (above average) |
| Latitude | -34.7155458 |
| Longitude | 138.7662817 |
| Distance from Adelaide | 28 km |
| Region (SA4) | Adelaide - North |
| Area (SA3) | Tea Tree Gully |
| Local Government | Playford |
| Federal Electorate | Spence |
| State Electorate | Taylor |
| Time Zone | ACST (UTC+9:30), Australia/Adelaide (standard time) |
Age Profile
Show counts
| 0–14 years | 179 (17.2%) |
| 15–24 years | 153 (14.7%) |
| 25–44 years | 184 (17.6%) |
| 45–64 years | 362 (34.7%) |
| 65+ years | 168 (16.1%) |
Housing Tenure
SEIFA socio-economic index
Health Conditions (2021 Census)
| Arthritis | 89 (8.5%) |
| Asthma | 88 (8.4%) |
| Diabetes | 58 (5.6%) |
| Heart Disease | 45 (4.3%) |
| Cancer | 32 (3.1%) |
| Lung Condition | 20 (1.9%) |
Long-term health conditions self-reported in the 2021 Census. Persons may report more than one condition.
Motor Vehicles per Dwelling
| No vehicle | 4 (1.2%) |
| 1 vehicle | 33 (9.9%) |
| 2 vehicles | 138 (41.6%) |
| 3+ vehicles | 157 (47.3%) |
Schools in One Tree Hill
ACARA 2025 school profiles for schools located in One Tree Hill. ICSEA is shown where ACARA publishes it.
Suburbs Near One Tree Hill
Same Postcode (5114)
More One Tree 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.