Treeby, WA
By Lauren McCaleb · Reviewed by Dylan Duncan ·
Among Australia's more advantaged suburbs
Treeby is more socio-economically advantaged than about 94% of the 14,462 Australian suburbs we score, based on the ABS SEIFA index (raw score 1091, 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.
Is Treeby a good place to live?
There’s no single answer — it depends on what matters to you. So instead of one mystery number, we break it down: a transparent score on each part of life we can back with public data, and an honest “not yet” on the parts we can’t.
Strong on the data we score
A weighted blend of the 2 components we can score for Treeby from public data. It sits alongside — and reconciles with — the socio-economic Suburb Score above; it is a transparent read, not a complete verdict.
Socio-economic advantage
94/100Among Australia's more advantaged suburbs
Among Australia's more advantaged suburbs — the same ABS SEIFA-based Suburb Score (94/100) shown above. Income, education and occupation, as published by the ABS. · ABS SEIFA 2021
Housing affordability
11/100Among the more expensive suburbs
Median weekly rent was $450 at the 2021 Census — more affordable than about 11% of suburbs we can compare. Housing data only, no valuations. · ABS Census 2021
Not yet scored
We’d rather leave these open than publish a number we can’t stand behind. Here’s where each one stands.
- Amenities & accessNot scored yet — our OpenStreetMap amenity mapping is still rolling out across suburbs.
- Green spaceNot scored yet — our OpenStreetMap green-space mapping is still rolling out across suburbs.
- TransportNot scored yet — our OpenStreetMap public-transport mapping is still rolling out across suburbs.
- SchoolsNot scored yet — school performance (ACARA / ICSEA) needs a data-reuse licence cleared before we can publish it.
- SafetyNot scored yet — Australia has no single open crime dataset and safety data carries defamation and legal care, so it is gated pending a go/no-go and will be data-only when added.
- CommunityNot scored yet — we won't reduce community to a number from a proxy. We'd rather leave it open than publish an invented value judgement.
A transparent read on public data, not a verdict — and not a measure of any person or community. See our methodology for how each component is worked out and why some aren’t scored yet.
Treeby at a glance
- Population (2021)
- 4,214
- Median age
- 32
- Median weekly household income
- $2,479
- SEIFA score
- 1091
- Local government area
- Cockburn
- Coordinates
- -32.1194, 115.8906
Map of Treeby
© OpenStreetMap contributors · View larger map
Housing & property in Treeby
What it costs to live in Treeby and how residents hold their homes, from the Australian Bureau of Statistics 2021 Census.
- Median rent
- $450
- per week
- Median mortgage
- $2,000
- per month
- Owner-occupied
- 83%
- of dwellings
- Rented
- 15%
- of dwellings
The full tenure and dwelling-type breakdown is in the Treeby demographics section below.
Source: ABS Census of Population and Housing, 2021. © Australian Bureau of Statistics, released under CC BY 4.0. See our methodology.
Treeby demographics (2021 Census)
The figures below profile Treeby 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 young adults (25–44) at 45% and 47% of residents were born overseas.
Age profile
| Age group | People | Share |
|---|---|---|
| Children (0–14) | 854 | 20% |
| Youth (15–24) | 416 | 10% |
| Young adults (25–44) | 1,904 | 45% |
| Mid-life (45–64) | 583 | 14% |
| Seniors (65+) | 456 | 11% |
Share of the 4,213 people counted by age.
Housing and households
| Tenure | Dwellings | Share |
|---|---|---|
| Owned outright | 229 | 15% |
| Owned with a mortgage | 1,008 | 68% |
| Rented | 230 | 15% |
| Dwelling type | Dwellings | Share |
|---|---|---|
| Houses | 1,167 | 79% |
| Townhouses & semis | 306 | 21% |
| Flats & apartments | 4 | 0% |
Tenure and dwelling shares are of the roughly 1,483 occupied private dwellings in Treeby.
- Average household size
- 2.7 people
- Median weekly family income
- $2,705
- Median weekly personal income
- $1,197
Community and culture
- Born overseas
- 1,918 (47%)
- Speaks a language other than English at home
- 1,419 (35%)
- Aboriginal and/or Torres Strait Islander
- 26 (1%)
Work and education
- Completed Year 12
- 2,350 (72%)
- Labour-force participation
- 75%
- Unemployment rate
- 2.8%
- Employed full-time
- 1,672
- Employed part-time
- 649
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 Treeby
Based on 2014–2023 records, the warmest month in Treeby is January (average daytime high around 31.2°C) and the coolest is July (around 15.5°C). The area receives roughly 739 mm of rain across the year.
| Month | Avg high | Avg low | Rain |
|---|---|---|---|
| Jan | 31.2°C | 17.4°C | 23 mm |
| Feb | 30.6°C | 17.5°C | 24 mm |
| Mar | 27.8°C | 16.5°C | 43 mm |
| Apr | 23.3°C | 13.6°C | 45 mm |
| May | 19.2°C | 10.8°C | 81 mm |
| Jun | 16.5°C | 9.2°C | 103 mm |
| Jul | 15.5°C | 8.7°C | 140 mm |
| Aug | 16.2°C | 8.3°C | 122 mm |
| Sep | 18.2°C | 9.2°C | 69 mm |
| Oct | 21.3°C | 10.9°C | 49 mm |
| Nov | 25.5°C | 13.3°C | 30 mm |
| Dec | 29.4°C | 15.8°C | 10 mm |
Climate normals, 2014–2023 (Open-Meteo, ERA5 reanalysis).
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Common questions about Treeby
Is Treeby a good place to live?
Treeby is among the highest-scoring suburbs on this list — Score 94/100, SEIFA 1,091, top 6% of Australian suburbs nationally — and the income figure confirms it: $2,479 median household weekly income, one of the highest in this batch, with an unemployment rate of just 2.8%. It is, by the data, an exceptionally well-off outer-growth suburb: new housing, mortgaged families, 47% born overseas, and an economic profile that sits comfortably in the tier of suburbs twice its age. The editorial gap is that it is a genuinely new suburb — this verdict is built from StreetScout and ABS data, and the resident experience is the unknown; a Homely check and a Dylan visit are both warranted before this page goes live, since the scores are impressive but the suburb is too new for the data to tell the whole story.
What is the median rent in Treeby?
At the 2021 Census, the median weekly rent in Treeby was $450, and the median monthly mortgage repayment was $2,000. These are official ABS Census figures — StreetScout publishes housing data only, with no property valuations or agent referrals.
Where is Treeby?
Treeby is a suburb of Western Australia, Australia, in the Cockburn local government area.
What is the population of Treeby?
At the 2021 Census, Treeby had a population of about 4,214.
Is Treeby an advantaged area?
Treeby has an ABS SEIFA score of 1091, where about 1000 is the national average — higher scores indicate greater relative socio-economic advantage. That gives it a Suburb Score of 94 out of 100 — more socio-economically advantaged than about 94% of Australian suburbs.
What is the weather like in Treeby?
Treeby has average daytime highs of about 22.9°C and overnight lows of about 12.6°C, with roughly 739 mm of rain across the year (based on 2014–2023 climate normals).
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