One Tree Hill, SA
By Lauren McCaleb · Reviewed by Dylan Duncan ·
More advantaged than the national average
One Tree Hill is more socio-economically advantaged than about 78% of the 14,462 Australian suburbs we score, based on the ABS SEIFA index (raw score 1038, where about 1000 is the national average).
A socio-economic measure from ABS Census data — not a measure of how good a suburb is to live in or visit. How we calculate this.
One Tree Hill at a glance
- Population (2021)
- 1,043
- Median age
- 45
- Median weekly household income
- $2,317
- SEIFA score
- 1038
- Coordinates
- -34.7214, 138.7450
One Tree Hill demographics (2021 Census)
The figures below profile One Tree Hill using the Australian Bureau of Statistics 2021 Census; every percentage is a share of a clearly stated Census count, so each one traces back to the source. At a glance, the largest age group is mid-life (45–64) at 35%, 5% of homes are rented, and 21% of residents were born overseas.
Age profile
| Age group | People | Share |
|---|---|---|
| Children (0–14) | 179 | 17% |
| Youth (15–24) | 153 | 15% |
| Young adults (25–44) | 184 | 18% |
| Mid-life (45–64) | 362 | 35% |
| Seniors (65+) | 168 | 16% |
Share of the 1,046 people counted by age.
Housing and households
| Tenure | Dwellings | Share |
|---|---|---|
| Owned outright | 149 | 45% |
| Owned with a mortgage | 155 | 47% |
| Rented | 15 | 5% |
| Dwelling type | Dwellings | Share |
|---|---|---|
| Houses | 335 | 100% |
| Townhouses & semis | 0 | 0% |
| Flats & apartments | 0 | 0% |
Tenure and dwelling shares are of the roughly 335 occupied private dwellings in One Tree Hill.
- Median weekly rent
- $305
- Median monthly mortgage
- $1,863
- Average household size
- 3 people
- Median weekly family income
- $2,364
- Median weekly personal income
- $842
Community and culture
- Born overseas
- 211 (21%)
- Speaks a language other than English at home
- 56 (6%)
- Aboriginal and/or Torres Strait Islander
- 7 (1%)
Work and education
- Completed Year 12
- 398 (48%)
- Labour-force participation
- 68.5%
- Unemployment rate
- 3.5%
- Employed full-time
- 321
- Employed part-time
- 218
Source: ABS Census of Population and Housing, 2021 (General Community Profile, by Suburb and Locality). © Australian Bureau of Statistics, released under CC BY 4.0. How we group bands and derive each share is set out on our methodology page.
Weather and climate in One Tree Hill
Based on 2014–2023 records, the warmest month in One Tree Hill is January (average daytime high around 28.9°C) and the coolest is July (around 13°C). The area receives roughly 850 mm of rain across the year.
| Month | Avg high | Avg low | Rain |
|---|---|---|---|
| Jan | 28.9°C | 16.1°C | 31 mm |
| Feb | 27.5°C | 15.4°C | 28 mm |
| Mar | 25.2°C | 14.3°C | 23 mm |
| Apr | 21.2°C | 12°C | 55 mm |
| May | 16.4°C | 9.4°C | 90 mm |
| Jun | 13.7°C | 7.3°C | 112 mm |
| Jul | 13°C | 6.4°C | 132 mm |
| Aug | 13.8°C | 6.6°C | 141 mm |
| Sep | 16.6°C | 8°C | 87 mm |
| Oct | 20.6°C | 10.1°C | 63 mm |
| Nov | 23°C | 11.7°C | 58 mm |
| Dec | 26.5°C | 13.9°C | 30 mm |
Climate normals, 2014–2023 (Open-Meteo, ERA5 reanalysis).
Common questions about One Tree Hill
Where is One Tree Hill?
One Tree Hill is a suburb of South Australia, Australia.
What is the population of One Tree Hill?
At the 2021 Census, One Tree Hill had a population of about 1,043.
Is One Tree Hill an advantaged area?
One Tree Hill has an ABS SEIFA score of 1038, where about 1000 is the national average — higher scores indicate greater relative socio-economic advantage. That gives it a Suburb Score of 78 out of 100 — more socio-economically advantaged than about 78% of Australian suburbs.
What is the weather like in One Tree Hill?
One Tree Hill has average daytime highs of about 20.5°C and overnight lows of about 10.9°C, with roughly 850 mm of rain across the year (based on 2014–2023 climate normals).
Does One Tree Hill have high household incomes?
One Tree Hill has one of the highest median weekly household incomes in South Australia — the 24th-highest among suburbs with at least 1,000 residents at the 2021 Census ($2,317 per week).
Where One Tree Hill ranks
One Tree Hill appears in these data-driven guides — each a transparent sort on a single ABS figure shown on this page.
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