Suburb profile · Greater Perth
Treeby has an estimated 8,087 residents, up 91.9% since the 2021 Census, with 6 projects tracked in Treeby.
Updated 14 Oct 2026.
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Located 19 kilometres south from Perth CBD, the suburb of Treeby is an affluent and culturally diverse community characterised by rapid expansion and high educational attainment. As of the latest population estimate date of Aug 2026, AreaSearch estimates the suburb of Treeby to have an Estimated Resident Population (ERP) of approximately 8,087 residents, reflecting an increase of 3,873 people (91.9%) since the 2021 Census reported a population of 4,214 people. This growth, derived from yearly aggregated SA2-level ERP releases and quarterly national address file updates, places the area in the top 10% of areas nationally for population growth, supported by 978 Validated New Addresses since the Census date and well above average population drivers and development activity.
Demographically, the suburb of Treeby exhibits a pronounced 25 to 34yo demographic alongside a high proportion of children and young adults, largely configured into family households and couples without children.
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01Profile
The analysis, national rankings and who lives there.
Located 19 kilometres south from Perth CBD, the suburb of Treeby is an affluent and culturally diverse community characterised by rapid expansion and high educational attainment. As of the latest population estimate date of Aug 2026, AreaSearch estimates the suburb of Treeby to have an Estimated Resident Population (ERP) of approximately 8,087 residents, reflecting an increase of 3,873 people (91.9%) since the 2021 Census reported a population of 4,214 people. This growth, derived from yearly aggregated SA2-level ERP releases and quarterly national address file updates, places the area in the top 10% of areas nationally for population growth, supported by 978 Validated New Addresses since the Census date and well above average population drivers and development activity.
Demographically, the suburb of Treeby exhibits a pronounced 25 to 34yo demographic alongside a high proportion of children and young adults, largely configured into family households and couples without children.
Estimated resident population by year (ABS, not Census counts): 276 in 2006 and 7,594 in 2025. The dashed segment ends at the AreaSearch estimate for Aug 2026: 8,087 (ABS June 2025 base).
Share of residents in each age band (ABS age profile, scaled to the Aug 2026 AreaSearch estimate). Largest: 25 to 34, 22.2%.
Share of households in each weekly household income band (2021 Census). Largest: $1,500 - 2,999, 39.9%.
Treeby ranks in the 99th percentile nationally for development activity and the 99th for employment drivers.
Each bar and spoke is a national percentile; the dashed ring is the typical area. 99th = higher than 99 in every 100 neighbourhood-sized areas across Australia (ABS SA2 areas). Higher means more of the measure, not necessarily better. Orange marks the top three measures where a higher percentile is better; not Age, Housing or Housing Cost.
02Market and pipeline
Rents, sale prices and what is being built.
The median rent in Treeby is $815 a week, up 6.9% over 12 months to Sep 2026 and 13% above Greater Perth.
13% above Greater Perth on median weekly rent
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Median rent | $815 a week | Rental bond lodgements, median for the 12 months to Sep 2026 | |
| Change in median rent over 12 months | +6.9% | Rental bond lodgements, median for the 12 months to Sep 2026 | |
| Median rent, Cockburn | $730 a week | Rental bond lodgements, median for the 12 months to Sep 2026 | |
| Change in median rent, Cockburn, over 12 months | +7.2% | Rental bond lodgements, median for the 12 months to Sep 2026 | |
| Median rent, Perth - South West | $717 a week | Rental bond lodgements, median for the 12 months to Sep 2026 |
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Change in median rent, Perth - South West, over 12 months | +6.4% | Rental bond lodgements, median for the 12 months to Sep 2026 | |
| Median rent, Greater Perth | $723 a week | Rental bond lodgements, median for the 12 months to Sep 2026 | |
| Change in median rent, Greater Perth, over 12 months | +6.5% | Rental bond lodgements, median for the 12 months to Sep 2026 | |
| Median rent, WA | $714 a week | Rental bond lodgements, median for the 12 months to Sep 2026 | |
| Change in median rent, WA, over 12 months | +7.0% | Rental bond lodgements, median for the 12 months to Sep 2026 |
AreaSearch tracks 6 projects in Treeby (1 under construction) and 89 more in the surrounding area.
Kara at Treeby is a masterplanned residential community developed by LWP Group in partnership with DevelopmentWA, featuring around 1500 housing lots across a sustainable urban village design. The development includes an early childhood education centre, extensive nature play areas, and a central park network.
A 9-level mixed-use development by SKS Group known as The Boulevard Residences at 20 Linkage Avenue, Cockburn Central. It features 243 build-to-rent and residential apartments alongside six ground-floor retail tenancies, positioned directly next to Cockburn Train Station.
Stockland's 145-hectare masterplanned community in Treeby, 25km south of Perth, developed on a former sand quarry. The estate delivered 2,030 homes across residential lots, terrace homes, and the Aspire over-55s precinct, housing up to 6,000 residents.
Treeby East Primary School (planning name) is a new Western Australian public primary school under construction to serve the rapidly growing Treeby community.
ASCEND is a 220-hectare industrial and logistics estate at Jandakot Airport, developed by Dexus and Cbus Super, with high-specification warehousing. Dexus reported 24,100 sqm of developments completed at the estate in the half-year to February 2026.
The Armadale Road to North Lake Road Bridge is a major transport infrastructure project built over the Kwinana Freeway to ease congestion and improve access for Cockburn Central visitors and residents. This world-class project opened in 2022 after two years of construction and serves over 50,000 vehicles daily.
A 32.97 million dollar social and affordable housing development delivering 50 new homes (19 townhouses and 31 apartments) on State-owned land in Canning Vale by the Department of Housing and Works. Built to Silver Level Liveable Housing Australia standards by builder ABN Residential, the project is adjacent to the Nicholson Road METRONET station.
Neighbourhood retail centre within Stockland's Calleya masterplanned community in Treeby, completed across two stages. Stage 1 delivered a Nido Early School (96-place childcare), Mooba Cafe, and town square. Stage 2, completed in 2023, added an IGA supermarket, medical centre, and pharmacy.
The Perth Surf Park is a $120 million major tourism and sports infrastructure development featuring a world-class 62-module Wavegarden Cove surfing lagoon. Delivered by Aventuur in Jandakot, the precinct will also include a beach club, bars, high-performance surf academy, wellness centre, and rooftop accommodation.
Kara Estate is a sold-out residential land community in Treeby developed by LWP Group on behalf of DevelopmentWA (formerly the Department of Communities).
Jandakot Business Park is a 46-unit strata warehouse development by Capital Prudential located at 100 Prinsep Road, Jandakot. Built by Alita Constructions, the project features units ranging from 150 sqm to 539 sqm with high trusses, three-phase power, kitchenettes, and mezzanine levels. Construction is actively progressing toward completion.
Ayana Estate is a masterplanned residential estate in Piara Waters being delivered by Aigle Royal Group and GM Property Group. The project comprises around 60 residential lots with Stage 3 now selling, while earlier stages have been released and titled progressively.
Images marked AI impression are illustrative only and not photographs of the project; follow the project links for actual imagery. Original imagery? Contact us.
Estimated completion year of the 39 projects in and around the area that are not yet completed and have one: 2025 1, 2026 12, 2027 11, 2028 9, 2029 2, 2030 3, 2031 0, 2032 0, 2033 0, 2034 0, 2035 1. 13 have no completion year.
AreaSearch has tracked 3 substantial development applications lodged in and around Treeby over the period covered (about 2.6 years), 1 in the last 12 months; 2 are recorded as under assessment. Coverage varies by council.
Status of the 3 tracked applications: 0 approved, 2 under assessment, 1 other (refused, withdrawn or no status).
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Tracked applications | 3 | Tracked by AreaSearch, in and around the area, period covered (about 2.6 years) | |
| Tracked, last 12 months | 1 | Tracked by AreaSearch, in and around the area | |
| ABS building approvals | 33.4 per 1,000 people | ABS building approvals | 97th percentile nationally |
| Average approvals a year | 168 | ABS building approvals | 89th percentile nationally |
| Applications under assessment | 2 | Tracked by AreaSearch, in and around the area, period covered (about 2.6 years) |
Key infrastructure and planning changes likely to influence the suburb of Treeby include: Solaris Private Estate Treeby (Construction); Lake Treeby Estate (Construction); Lot 5131 Jandakot Road Treeby Development (Approved); South-Central Large Format Retail Expansion Stage II (Construction); and Treeby East Primary School (Planning Name) (Construction). These projects represent significant developments that will shape the area's future infrastructure landscape.
Infrastructure development impacting the suburb of Treeby spans multiple sectors including Communities, Precincts & Urban Renewal, Communities, and Retail, among others.
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AreaSearch's development drivers ranking places residential development activity in Treeby higher than 99% of real estate markets across the country.
Dwelling approval activity in the suburb of Treeby area has seen 327 residential approvals over the past two financial years, based on AreaSearch's SA2 aggregation method. The suburb of Treeby's current population of 8,087 has been supported by 168 approvals on average over recent years.
The suburb of Treeby has seen 33.4 approvals per 1,000 people in recent years, compared to 7.4 approvals in Greater Perth. This means that one dwelling has been approved for every 44 people in the suburb of Treeby, compared to one for every 118 in Greater Perth.
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Looking at development activity over the past five years, the suburb of Treeby's approval levels have been below the yearly average of 168, indicating a recent decline in approval activity.
Over the past five years, the population in the suburb of Treeby has grown by approximately 3,920 people, while 840 residential approvals were recorded. This equates to a ratio of 4.7 people added for each new dwelling approval. This high ratio suggests strong population growth relative to housing supply, potentially indicating unmet housing demand.
03People
Population, age, income, work, education and more.
99th = higher than 99 in every 100 neighbourhood-sized areas across Australia (ABS SA2 areas). Higher means more of the measure, not necessarily better.
Treeby lies within the top 2% of areas nationally in terms of population growth performance according to AreaSearch analysis of short and medium-term trends.
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Population | 8,087 | AreaSearch estimate, Aug 2026, from the ABS June 2025 base | |
| Growth since 2021 Census | +91.9% | AreaSearch estimate, Aug 2026, against the 2021 Census | 99th percentile nationally |
| Population density | 982 per km² | AreaSearch estimate, Aug 2026, from the ABS June 2025 base | 51st percentile nationally |
| Average yearly growth, 2020 to 2025 | +15.6% | ABS estimated resident population series to June 2025 | |
| Average yearly growth, 2015 to 2025 | +24.4% | ABS estimated resident population series to June 2025 |
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Population at the 2021 Census | 4,214 | 2021 Census | |
| Residents added since the 2021 Census | 3,873 | AreaSearch estimate, Aug 2026, against the 2021 Census | |
| Average yearly growth, 2022 to 2025 | +13.7% | ABS estimated resident population series to June 2025 | |
| Population growth, 2024 to 2025 | +11.2% | ABS estimated resident population series to June 2025 | |
| Land area | 8.24 km² | AreaSearch boundary analysis |
Total population for the suburb of Treeby was estimated to be approximately 8,087 as at Aug 2026. This is based upon an estimated resident population of 7,594 from the ABS up to June 2025.
The suburb of Treeby has added approximately 3,873 people and shown a 91.91% increase from the 4,214 people recorded at the 2021 Census period.
The population density in the suburb of Treeby is estimated at 981 persons per square kilometre based on the latest population estimate.
Over the past 10 years, the population in the suburb of Treeby has shown a compound annual growth rate of 24.4% per annum.
Population growth in the suburb of Treeby is driven by: Interstate migration (49.0%), Overseas migration (29.0%), Natural increase (22.0%). The primary driver is Interstate migration, contributing 49.0% of overall population gains.
Treeby hosts a very young demographic, ranking in the bottom 10% of areas nationwide.
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Median age | 34 years | ABS estimated resident population age profile (June 2025), scaled to the Aug 2026 AreaSearch estimate | 10th percentile nationally |
| Aged 65 and over | 12.8% | ABS estimated resident population age profile (June 2025), scaled to the Aug 2026 AreaSearch estimate | |
| Children under 15 | 17.2% | ABS estimated resident population age profile (June 2025), scaled to the Aug 2026 AreaSearch estimate | |
| Aged 15 to 34 | 34.2% | ABS estimated resident population age profile (June 2025), scaled to the Aug 2026 AreaSearch estimate | |
| Aged 25 to 64 | 57.9% | ABS estimated resident population age profile (June 2025), scaled to the Aug 2026 AreaSearch estimate |
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Median age at the 2021 Census | 32 years | 2021 Census | |
| Aged 0 to 4 | 7.3% | ABS estimated resident population age profile (June 2025), scaled to the Aug 2026 AreaSearch estimate | |
| Aged 5 to 14 | 9.9% | ABS estimated resident population age profile (June 2025), scaled to the Aug 2026 AreaSearch estimate | |
| Aged 15 to 24 | 12.0% | ABS estimated resident population age profile (June 2025), scaled to the Aug 2026 AreaSearch estimate | |
| Aged 25 to 34 | 22.2% | ABS estimated resident population age profile (June 2025), scaled to the Aug 2026 AreaSearch estimate | |
| Aged 35 to 44 | 15.8% | ABS estimated resident population age profile (June 2025), scaled to the Aug 2026 AreaSearch estimate | |
| Aged 45 to 54 | 10.6% | ABS estimated resident population age profile (June 2025), scaled to the Aug 2026 AreaSearch estimate | |
| Aged 55 to 64 | 9.3% | ABS estimated resident population age profile (June 2025), scaled to the Aug 2026 AreaSearch estimate | |
| Aged 65 to 74 | 8.1% | ABS estimated resident population age profile (June 2025), scaled to the Aug 2026 AreaSearch estimate | |
| Aged 75 to 84 | 3.9% | ABS estimated resident population age profile (June 2025), scaled to the Aug 2026 AreaSearch estimate | |
| Aged 85 and over | 0.8% | ABS estimated resident population age profile (June 2025), scaled to the Aug 2026 AreaSearch estimate |
AreaSearch estimates the median age in the suburb of Treeby at 34 years as at August 2026. That is up from the 2021 Census figure of 32 years, with AreaSearch updating the age profile for population change recorded since the Census.
At an estimated 34 years as at August 2026, Treeby is 3 years younger than the Greater Perth 2021 Census average (37 years) and 4 years younger than the national Census average (38 years).
On AreaSearch estimates updated to August 2026, the most over-represented age group in the suburb of Treeby compared to the Greater Perth region is the 25 - 34 group, making up 22.2% of the population.
On AreaSearch estimates updated to August 2026, the most under-represented age group in the suburb of Treeby compared to the Greater Perth region is the 5 - 14 group, making up 9.9% of the population.
Yes, certain age groups in the suburb of Treeby show significant variance compared to Greater Perth. The most over-represented age group is 25-34 year-olds (22.2% vs 15.8%). The most under-represented age group is 85+ year-olds (0.8% vs 2.0%).
AreaSearch estimates children aged 0-14 years at 17.2% of the population in the suburb of Treeby as at August 2026.
AreaSearch estimates people aged 65 and over at 12.8% of the population in the suburb of Treeby as at August 2026.
The economic profile demonstrates exceptional strength, placing the area among the top 5% nationally based on comprehensive AreaSearch income analysis.
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Median taxable income (ATO) | $80,739 a year | ATO FY-24, annual | 96th percentile nationally |
| Average taxable income | $96,748 a year | ATO FY-24, annual |
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Census household income / week | $2,479 | 2021 Census, weekly | 90th percentile nationally |
| Census personal income / week | $1,197 | 2021 Census, weekly | 90th percentile nationally |
| High-income households | 37.1% | 2021 Census | |
| Census family income / week | $2,705 | 2021 Census, weekly | |
| Low-income households | 7.3% | 2021 Census |
Based on Wage Price Index adjustments to June 2026, the estimated median taxable income in the suburb of Treeby is approximately $86,423. The official ATO data from FY-24 recorded a median of $80,739.
Based on Wage Price Index adjustments to June 2026, the estimated average taxable income in the suburb of Treeby is approximately $103,559. The official ATO data from FY-24 recorded an average of $96,748.
Based on Wage Price Index adjustments to June 2026, the estimated median taxable income in the suburb of Treeby is approximately $86,423 compared to $68,556 in Greater Perth. The official ATO data from FY-24 shows $80,739 and $64,047 respectively.
Based on Wage Price Index adjustments to June 2026, the estimated average taxable income in the suburb of Treeby is approximately $103,559 compared to $90,565 in Greater Perth. The official ATO data from FY-24 shows $96,748 and $84,609 respectively.
As per the 2021 Census, the weekly household income bracket containing the largest proportion of the suburb of Treeby's households (~39.9% / 592 households) is the $1,500 - 2,999 cohort.
The largest weekly household income cohort in the suburb of Treeby is the $1,500 - 2,999 group, representing about 39.9% of households. In comparison, Greater Perth's largest household income cohort is the $1,500 - 2,999 group, representing 32.0% of its households, according to the 2021 Census.
The 2021 Census data indicates that the median household income in the suburb of Treeby is $2,479/wk.
According to the 2021 Census, the median family income in the suburb of Treeby is $2,705/wk.
The 2021 Census shows that the median personal income in the suburb of Treeby is $1,197/wk.
The suburb of Treeby shows a median taxpayer income of $80,739 and an average of $96,748 according to the latest postcode level ATO data aggregated by AreaSearch for FY-24. This is among the highest in Australia, contrasting with Greater Perth's median income of $64,047 and average income of $84,609. Based on Wage Price Index growth of 7.04% since FY-24, current estimates would be approximately $86,423 (median) and $103,559 (average) as of June 2026.
The estimated disposable income in the suburb of Treeby is $9,070 per year according to AreaSearch analysis.
The suburb of Treeby's disposable income is $9,070 compared to $6,842 for Greater Perth, based on AreaSearch analysis.
AreaSearch analysis of employment trends sees Treeby performing better than 99% of local markets assessed across Australia.
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Unemployment rate | 1.0% | ABS and DEWR labour data, compiled by AreaSearch | |
| Workforce participation | 75.0% | ABS and DEWR labour data, compiled by AreaSearch | |
| Employed residents | 4,663 | ABS and DEWR labour data, compiled by AreaSearch | |
| Daytime population | 6,107 | AreaSearch estimate of residents and workers present on a weekday | |
| Labour force | 4,709 | ABS and DEWR labour data, compiled by AreaSearch |
As of March 2026, the suburb of Treeby has approximately 4,663 employed residents with an unemployment rate of 1.0%. This very low unemployment rate indicates a tight labour market with strong demand for workers. The area ranks in the top 25% nationally for employment performance, indicating a robust job market.
As of March 2026, the unemployment rate in the suburb of Treeby stands at 1.0%, which is 3.2 percentage points below Greater Perth's rate of 4.2%. This lower unemployment rate suggests stronger local employment conditions. For comparison, the national unemployment rate is 4.2%.
The employment landscape in the suburb of Treeby is dominated by several key sectors. The largest employers are health care & social assistance (18.4% of employment), professional & technical (9.7%), and construction (8.4%). Other significant employers include education & training and retail trade.
Over the past year to March 2026, the suburb of Treeby has experienced employment growth, with total employment increasing while the labour force increased. As a result, the unemployment rate has risen. By comparison, Greater Perth saw employment increased and its unemployment rate rose.
The workforce participation rate in the suburb of Treeby is 75.0%, which represents the proportion of working-age residents who are either employed or actively seeking work. This high participation rate indicates strong workforce engagement and economic vitality. The local rate leading the Greater Perth average of 69.9%, indicating stronger workforce attachment in the local area.
The suburb of Treeby shows notable specialisation in health care & social assistance, which employs 18.4% of the local workforce compared to 14.8% across Greater Perth. This moderate specialisation indicates some local strength in the sector.
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The suburb of Treeby's employment market shows strong performance nationally, ranking in the top 25% of areas assessed by AreaSearch. This indicates robust employment conditions and economic vitality compared to other regions. Recent job advertisement trends show the broader employment region experienced 4.5% growth, ranking 12th out of 37 regions nationally.
Treeby shows strong educational performance, ranking in the upper quartile nationally when assessed across multiple qualification and achievement indicators.
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Bachelor qualifications | 30.4% | 2021 Census | 87th percentile nationally |
| Postgraduate qualifications | 9.6% | 2021 Census | 75th percentile nationally |
| University qualifications | 43.3% | 2021 Census | |
| Vocational qualifications | 20.2% | 2021 Census | 36th percentile nationally |
| Graduate diploma or certificate | 3.3% | 2021 Census | 74th percentile nationally |
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Advanced diploma or diploma | 11.5% | 2021 Census | 68th percentile nationally |
| No post-school qualification | 25.0% | 2021 Census | |
| Residents attending an educational institution | 24.4% | 2021 Census | |
| Residents attending university or other higher education | 5.8% | 2021 Census | 68th percentile nationally |
| Residents attending primary school | 7.3% | 2021 Census | 11th percentile nationally |
| Residents attending secondary school | 4.9% | 2021 Census | 8th percentile nationally |
43.3% of people aged 15 and over in the suburb of Treeby have university qualifications, compared to 30.1% in Greater Perth.
25.0% of people aged 15 and over in the suburb of Treeby have no formal qualifications, compared to 35.6% in Greater Perth.
The suburb of Treeby ranks in the 83th percentile nationally for education based on AreaSearch's analysis of qualification and performance metrics.
The most common qualifications in the suburb of Treeby are: Bachelor Degree (30.4%), Certificate (20.2%), Advanced Diploma (11.5%).
24.4% of the population in the suburb of Treeby is currently engaged in formal education, including 7.3% in primary school, 4.9% in secondary school, 5.8% at university (all shares of total residents).
The average ICSEA (Index of Community Socio-Educational Advantage) score for schools in the suburb of Treeby is 1084, indicating average socio-educational advantage (national average is 1000).
There are 1 schools within the suburb of Treeby, with a combined enrollment of approximately 467 students.
The suburb of Treeby includes 1 primary school.
Treeby features high concentrations of family households and couples without children but relatively few single parent families, with a larger average household size than Greater Perth.
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Median household size | 2.7 people | 2021 Census | 71st percentile nationally |
| Lone-person households | 14.9% | 2021 Census | 12th percentile nationally |
| Couples with children | 41.2% | 2021 Census | 82nd percentile nationally |
| Couples without children | 33.2% | 2021 Census | 84th percentile nationally |
| One-parent families | 6.3% | 2021 Census | 7th percentile nationally |
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Group households | 3.6% | 2021 Census | 68th percentile nationally |
| Households at the 2021 Census | 1,483 | 2021 Census | |
| Estimated households | 2,846 | AreaSearch estimate, Aug 2026 | |
| Family households | 81.6% | 2021 Census | 85th percentile nationally |
| Average children per family | 1.2 per family | 2021 Census | 12th percentile nationally |
As of the 2021 Census, the suburb of Treeby had 1,483 households. Based on population growth patterns, this has grown by approximately 91.9% to an estimated 2,846 households today.
The average household size in the suburb of Treeby is 2.7 people. This compares to 2.6 in Greater Perth and reflects the area's household composition mix.
Family households dominate at 81.6% of all households. Non-family households consist of lone person households (14.9%), group households (3.6%), and other household types (0.0%).
Of the 1,210 family households, couples with children account for 41.2% of all households, couples without children at home 33.2%, and single parent families 6.3%. This mix shapes local demand for schools, family services, and housing types.
Compared to Greater Perth, the suburb of Treeby shows distinct household patterns. Family households are notably over-represented at 81.6% (versus 71.5% in Greater Perth). Conversely, lone person households are under-represented at 14.9% compared to 24.9% in Greater Perth. This family-oriented profile influences local demand for family homes, schools, and children's services.
Families in the suburb of Treeby have an average of 1.2 children, slightly below the Greater Perth average of 1.6. This influences local demand for child-related services and larger family homes.
Marriage patterns reveal 54.8% of the adult population are currently married, while 35.0% have never married. This compares to 47.6% married and 36.1% never married across Greater Perth.
Single-person households represent 14.9% of all households in the suburb of Treeby, notably lower than the average for Greater Perth of 24.9%. This affects demand for smaller dwellings and single-person accommodation.
Group households (unrelated people sharing) account for 3.6% of households, in line with the Greater Perth average of 3.5%.
Treeby is among the most culturally diverse areas in the country based on AreaSearch assessment of a range of language and cultural background related metrics.
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Born overseas | 46.8% | 2021 Census | 88th percentile nationally |
| Speak another language at home | 35.0% | 2021 Census | 79th percentile nationally |
| English only at home | 65.0% | 2021 Census | 20th percentile nationally |
| Australian citizens | 80.1% | 2021 Census | 22nd percentile nationally |
| Born in Australia | 53.2% | 2021 Census | 12th percentile nationally |
| Aboriginal and Torres Strait Islander residents | 0.5% | 2021 Census | 21st percentile nationally |
Treeby scores quite highly on cultural diversity, with 35.0% of its population speaking a language other than English at home and 46.8% born overseas.
The main religion in Treeby was found to be Christianity, which makes up 44.8% of people in Treeby. However, the most apparent overrepresentation was in Hinduism, which comprises 8.3% of the population, substantially higher than the Greater Perth average of 2.5%.
In terms of ancestry (country of birth of parents), the top three represented groups in Treeby are English, comprising 22.0% of the population, which is notably lower than Greater Perth's 28.0%, Australian, comprising 18.7% of the population, and Other, comprising 15.1% of the population. Additionally, there are notable divergences in the representation of certain other ethnic groups: South African is notably overrepresented at 1.5% of Treeby (vs 1.0% across Greater Perth), Filipino at 3.9% (vs 1.4%) and Spanish at 0.8% (vs 0.4%).
46.8% of the suburb of Treeby population was born overseas, compared to 37.7% across Greater Perth.
35.0% of the population in the suburb of Treeby speaks a language other than English at home, compared to 22.0% in Greater Perth.
0.5% of the suburb of Treeby population identifies as Australian Aboriginal, compared to 1.4% in Greater Perth.
80.1% of the suburb of Treeby population holds citizenship, compared to 83.0% in Greater Perth.
04Place
Housing, health, transport, local services and the reports on them.
Treeby is characterized by a predominantly suburban housing profile, with ownership patterns similar to Greater Perth.
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Rented homes | 15.4% | 2021 Census | 13th percentile nationally |
| Owned outright | 16.0% | 2021 Census | 9th percentile nationally |
| Detached houses | 79.0% | 2021 Census | 36th percentile nationally |
| Median mortgage repayment | $2,000 a month | 2021 Census, monthly | 67th percentile nationally |
| Owned with a mortgage | 68.6% | 2021 Census | 99th percentile nationally |
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Semi-detached, terrace and townhouses | 20.7% | 2021 Census | 85th percentile nationally |
| Median weekly rent paid, 2021 Census | $450 | 2021 Census, weekly | 81st percentile nationally |
| Median rent as a share of median household income | 18.2% | 2021 Census, ratio calculated by AreaSearch | 25th percentile nationally |
| Median mortgage repayment as a share of household income | 18.6% | 2021 Census, ratio calculated by AreaSearch | 8th percentile nationally |
| People per bedroom | 0.7 per bedroom | 2021 Census | 23rd percentile nationally |
In the suburb of Treeby, 16.0% of homes are owned outright, 68.6% are owned with a mortgage, and 15.4% are rented.
According to the latest data, 79.0% of dwellings in the suburb of Treeby are houses.
In the suburb of Treeby, 0.3% of dwellings are apartments or units, with an additional 20.7% being semi-detached dwellings.
Outright home ownership in the suburb of Treeby stands at 16.0%, compared to 29.3% in Greater Perth.
The median monthly mortgage repayment in the suburb of Treeby is $2,000, compared to $1,907 in Greater Perth.
The aggregate monthly housing cost in the suburb of Treeby is $1,672, which represents the average monthly cost across all housing types.
In the suburb of Treeby, households with mortgages typically spend 18.6% of their income on mortgage repayments, while renters spend 18.2% of their income on rent.
The average persons per bedroom ratio in the suburb of Treeby is 0.7, indicating the level of household density.
Housing affordability in the suburb of Treeby shows mortgage holders spending 18.6% of income on repayments (vs 23.6% in Greater Perth), while renters spend 18.2% of income on rent (vs 18.8% in Greater Perth).
The dwelling mix in the suburb of Treeby consists of 79.0% detached houses, 20.7% semi-detached dwellings, 0.3% apartments, and 0.0% other dwelling types.
Housing in Treeby consumes approximately 15.6% of median household income ($10,734 monthly), indicating costs are highly affordable. The generally accepted benchmark is that housing should not exceed 30% of household income.
Recent development applications in Treeby show attached dwellings contributing 0% of approvals compared to 21% of existing stock, while detached houses represent 100% of applications versus 79% of current dwellings. This suggests development patterns consistent with existing housing mix. The area shows minimal growth in housing density compared to other Australian locations.
Treeby's residents are extremely healthy relative to locations nationally with younger cohorts in particular seeing very low prevalence of common health conditions.
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Private health cover | 63.9% | ATO FY 2024, private health cover | 85th percentile nationally |
| No long-term health condition | 78.0% | 2021 Census | 89th percentile nationally |
| Need help with daily activities | 4.4% | 2021 Census | 32nd percentile nationally |
| No long-term health condition, under 65 | 83.6% | 2021 Census | 91st percentile nationally |
| Three or more long-term health conditions, under 65 | 0.4% | 2021 Census | 5th percentile nationally |
Around 63.9% of people in the suburb of Treeby are covered by private health insurance, which compares to 59.1% in Greater Perth.
In the suburb of Treeby, 4.4% of the population is identified as requiring ongoing medical assistance. By comparison, 4.6% of people in Greater Perth require similar assistance.
6.1% of people in the suburb of Treeby are diagnosed with asthma. In comparison, 6.8% of the population across Greater Perth is affected by asthma.
Diabetes affects 2.8% of the suburb of Treeby population, while in Greater Perth, 4.0% of people are diagnosed with diabetes.
2.3% of people in the suburb of Treeby have heart disease. Across Greater Perth,3.3% of the population is affected by heart disease.
In the suburb of Treeby, 63.9% of the population are estimated to have private health insurance. Comparatively, Greater Perth sees an estimated private health coverage rate of 59.1%.
Transport servicing is moderate compared to other areas nationally based on assessment of service frequency, route connectivity and accessibility.
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Transport access | 47 out of 100 | AreaSearch transport analysis of timetable data | 47th percentile nationally |
| Public transport stops | 16 | Public transport timetable (GTFS) data, compiled by AreaSearch | 17th percentile nationally |
| Weekly public transport trips | 1,003 | Public transport timetable (GTFS) data, compiled by AreaSearch | 35th percentile nationally |
| People per public transport stop | 469 | Public transport timetable (GTFS) data, compiled by AreaSearch | |
| Public transport routes | 4 | Public transport timetable (GTFS) data, compiled by AreaSearch |
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Vehicles per dwelling | 1.6 per dwelling | 2021 Census | |
| Working residents who worked from home | 8.0% | 2021 Census, taken during COVID-19 restrictions |
There are 16 public transport stops within the suburb of Treeby.
The suburb of Treeby has 1,003 weekly trips across 4 routes, averaging 143 trips per day.
On average, residential properties are 346 metres from the nearest transport stop.
From the typical resident, the nearest child care centre is 684 m away and the nearest school 793 m.
Distance from the typical resident to the nearest of each service. Every bar starts at 0 m. The nearest is orange.
Public transport 16 stops nearby, 1,003 weekly trips, access rating 47 out of 100.
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Amenity score | 23 out of 100 | AreaSearch proximity analysis | 23rd percentile nationally |
| Nearest child care | 684 m | AreaSearch proximity analysis, from the typical resident | |
| Nearest school | 793 m | AreaSearch proximity analysis, from the typical resident | |
| Nearest pharmacy | 809 m | AreaSearch proximity analysis, from the typical resident | |
| Nearest supermarket | 1.1 km | AreaSearch proximity analysis, from the typical resident |
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Nearest fitness centre | 1.4 km | AreaSearch proximity analysis, from the typical resident | |
| Nearest GP | 2.2 km | AreaSearch proximity analysis, from the typical resident | |
| Nearest dentist | 2.3 km | AreaSearch proximity analysis, from the typical resident | |
| Nearest bank | 2.5 km | AreaSearch proximity analysis, from the typical resident | |
| Nearest shopping centre | 2.6 km | AreaSearch proximity analysis, from the typical resident | |
| Nearest government service | 2.9 km | AreaSearch proximity analysis, from the typical resident | |
| Nearest hospital | 6.7 km | AreaSearch proximity analysis, from the typical resident |
Sector reports that go deeper on these services: child care, medical, retail, aged care and specialist disability accommodation (SDA). There are 3 long day care centres with 202 places in Treeby, about 2.6 children aged 0-4 per place.
Short silent previews of sample pages. Sector reports are ordered for a catchment you draw, not for the suburb as a whole.
05Reports and tools
Order a report and find more tools.
An area report on Treeby is built to order and emailed to you.
Ordered reports
The other sector reports are ordered on a custom catchment: draw your own area to add them. The order window shows the estimate before you place the order.
Order a reportShort silent previews of sample pages. Base and Child Care can be ordered for Treeby.
06About this profile
Where the figures come from, downloads and nearby areas.
AreaSearch's development drivers ranking places residential development activity in Treeby higher than 99% of real estate markets across the country.
Treeby has moderate levels of nearby infrastructure activity, ranking in the 44th percentile nationally.
No headline figures are reported for this area.
Median rent in Treeby is $815 a week, +6.9% over 12 months to Sep 2026.
Treeby lies within the top 2% of areas nationally in terms of population growth performance according to AreaSearch analysis of short and medium-term trends.
Treeby hosts a very young demographic, ranking in the bottom 10% of areas nationwide.
The economic profile demonstrates exceptional strength, placing the area among the top 5% nationally based on comprehensive AreaSearch income analysis.
AreaSearch analysis of employment trends sees Treeby performing better than 99% of local markets assessed across Australia.
Treeby shows strong educational performance, ranking in the upper quartile nationally when assessed across multiple qualification and achievement indicators.
Treeby features high concentrations of family households and couples without children but relatively few single parent families, with a larger average household size than Greater Perth.
Treeby is among the most culturally diverse areas in the country based on AreaSearch assessment of a range of language and cultural background related metrics.
Treeby is characterized by a predominantly suburban housing profile, with ownership patterns similar to Greater Perth.
Treeby's residents are extremely healthy relative to locations nationally with younger cohorts in particular seeing very low prevalence of common health conditions.
Transport servicing is moderate compared to other areas nationally based on assessment of service frequency, route connectivity and accessibility.
Amenity provision was found to be below the typical area assessed nationally by AreaSearch, based on counts and proximity analysis.
Treeby has an estimated 8,087 residents, up 91.9% since the 2021 Census, with 6 projects tracked in Treeby.
Latest estimate as at Aug 2026; other figures from the 2021 Census, ATO FY-24 and AreaSearch estimates where labelled. Updated 14 Oct 2026.
Sources: ABS Census 2021, ABS estimated resident population, ATO taxation statistics, state rental bonds and property sales records where published, and AreaSearch analysis for Treeby.
Data currency
Refreshed . Rents to Sep 2026, population and age estimated to Aug 2026, taxable income FY 2024 and projects to Sep 2026. Housing, households and cultural diversity are from the 2021 Census (next update with the 2026 Census results).
Infrastructure projects and development applications also include sites in the surrounding area, and are labelled as such. Other sections were compiled 15 Oct 2026 from sources that update on their own cycles; "See the evidence" lists each source and its cycle.
SAL boundaries are defined by Australia Post and the Australian Bureau of Statistics to represent commonly-known suburb names used in postal addresses.
Statistical Areas (SA2) are designed for census data collection and may combine multiple suburbs or use different geographic boundaries. For a complete picture, consider both boundary types where available.
Main sources: ABS, Geoscience Australia, GNAF, ATO, State governments, Valuer General, Rental Board and Infrastructure Australia.
Cross-check us. The Census baseline for this boundary is at ABS 2021 Census QuickStats (SAL51467). QuickStats reports 2021 only; the figures on this page are more current wherever the ledger shows a later date.
This page uses Suburbs and Localities (SAL) boundaries (suburb-style geography). SAL represents commonly-known suburb names used in addresses, while Statistical Areas (SA2) are designed for census and statistical reporting. Even when sharing the same name, SAL and SA2 boundaries often cover different geographic areas with different populations.
AreaSearch compiles this page from official and industry sources, including ABS, Geoscience Australia, GNAF, ATO, State governments, Valuer General, Rental Board and Infrastructure Australia, then calculates statistics for the boundary shown, and ranks, growth rates and benchmarks itself. Property sales come from the state valuation authority, rents from state rental bond lodgements, development applications from council and state planning portals, school data from ACARA, and public transport from state transport departments. Infrastructure projects and development applications also include sites in the surrounding area, labelled as such.
No. Most of this page is built beyond the Census. Dated for this area: population (Aug 2026), age profile (Aug 2026), infrastructure projects (Sep 2026) and income (FY 2024). Compiled with this profile from sources that publish on their own cycles: development and approvals, property sales and rents, employment, education, transport, health and services and amenities. Only housing, households and cultural diversity remain wholly Census-based, because no more current small-area dataset exists for those measures.
Key demographics and figures for Treeby from the 2021 Census, ATO taxpayer data and AreaSearch estimates and analysis. Each topic has its own table of key figures beside the section it belongs to, and each row names its source and date. The percentile compares Treeby with every neighbourhood-sized area across Australia (ABS SA2 areas): a higher percentile means more of that measure than most, not necessarily better.
Source: AreaSearch (areasearch.com.au) compiled from ABS Census 2021, ATO and other public sources.
