Treeby

Treeby lies within the top 10% of areas nationally in terms of population growth performance according to AreaSearch analysis of short and medium-term trends

As of Nov 2025, the Treeby statistical area's population is estimated at around 6,950. This reflects an increase of 2,736 people since the 2021 Census, which reported a population of 4,214. The change was inferred from AreaSearch's estimate of the resident population at 6,792 following examination of ABS's latest ERP data release in June 2024 and an additional 848 validated new addresses since the Census date. This level of population equates to a density ratio of 843 persons per square kilometer. The Treeby (SA2) experienced a growth rate of 64.9% since the 2021 census, exceeding both national (9.7%) and state averages. Primary driver for this growth was interstate migration contributing approximately 49.0% of overall population gains during recent periods.

AreaSearch is adopting ABS/Geoscience Australia projections released in 2024 with a base year of 2022 for each SA2 area, and using growth rates by age cohort provided by the ABS in its latest Greater Capital Region projections released in 2023 based on 2022 data for areas not covered. Future projections indicate a significant population increase in the top quartile of national statistical areas, with the Treeby (SA2) expected to expand by 1,536 persons to reach an estimated total of 8,486 by 2041 based on aggregated SA2-level projections, reflecting an overall reduction of 6.0% over the 17-year period.

AreaSearch assessment of residential development activity positions Treeby among the top 25% of areas assessed nationwide

AreaSearch analysis of ABS building approval numbers in Treeby shows around 237 new homes approved annually over the past five financial years, totalling an estimated 1,187 homes. As of FY-26 so far, 73 approvals have been recorded. On average, 0.8 new residents per year per dwelling constructed were added between FY-21 and FY-25. This suggests that new construction is meeting or exceeding demand, providing more buyer options and enabling population growth.

The average value of new dwellings developed is $467,000, indicating a focus on the premium segment with upmarket properties. In Treeby, $24.9 million in commercial development approvals have been recorded this financial year, demonstrating steady commercial investment activity. Compared to Greater Perth, Treeby records 478.0% more construction activity per person, reflecting strong developer confidence in the area despite recent moderation in development activity. New construction has consisted entirely of detached houses, maintaining the area's low density character and appealing to families seeking space. There are approximately 24 people per dwelling approval in Treeby, indicating an expanding market.

However, population projections suggest stability or decline, which may reduce housing demand pressures and benefit potential buyers in the future.

Treeby has moderate levels of nearby infrastructure activity, ranking in the 45thth percentile nationally

Local infrastructure changes significantly influence an area's performance. AreaSearch has identified 25 projects likely impacting the area. Notable projects include Provence Estate, Treeby Village, Treeby East Primary School (provisional name), and Calleya Estate by Stockland. The following list details those most relevant.

Professional plan users can use the search below to filter and access additional projects.

Denotes AI-based impression for illustrative purposes only, not to be taken as definitive under any circumstances. Please follow links and conduct other investigations from the project's source for actual imagery. Developers and project owners wishing us to use original imagery please Contact Us and we will do so.

The exceptional employment performance in Treeby places it among Australia's strongest labour markets

Treeby has an educated workforce with significant representation in essential services sectors. Its unemployment rate is 0.8%, and it experienced a 5.0% employment growth over the past year (AreaSearch).

As of September 2025, Treeby's residents numbered 3413 employed, with an unemployment rate of 3.1%, below Greater Perth's 4.0%. Workforce participation was high at 74.9%. Leading industries were health care & social assistance, professional & technical services, and construction. Health care had a particularly strong share, being 1.2 times the regional level.

However, accommodation & food services were under-represented with only 4.8% of Treeby's workforce compared to Greater Perth's 6.8%. Employment opportunities seemed limited locally based on Census data. Over the year ending September 2025, employment increased by 5.0%, while labour force grew by the same percentage, keeping unemployment stable. In contrast, Greater Perth had employment growth of 2.9% and a marginal rise in labour force. State-level data to 25-Nov showed WA employment contracting by 0.27%. Treeby's future employment outlook was estimated using Jobs and Skills Australia projections. Applying these to Treeby's current mix suggested local employment could increase by 6.7% over five years and 14.1% over ten years, though this is a simplified extrapolation for illustrative purposes only.

The economic profile demonstrates exceptional strength, placing the area among the top 10% nationally based on comprehensive AreaSearch income analysis

AreaSearch's latest postcode level ATO data for financial year 2023 shows Treeby's median income among taxpayers is $72,694. The average income in the suburb is $86,768. Both figures are among the highest in Australia. Greater Perth's median income is $60,748 with an average of $80,248. Based on Wage Price Index growth of 9.62% since financial year 2023, current estimates for Treeby would be approximately $79,687 (median) and $95,115 (average) as of September 2025. Census data reveals incomes in Treeby rank highly nationally, with household, family, and personal incomes between the 90th and 90th percentiles. Income brackets indicate that 39.9% of locals (2,773 people) fall into the $1,500 - $2,999 category, similar to broader trends across the area showing 32.0% in the same category. A significant 37.1% earn above $3,000 weekly. High housing costs consume 15.6% of income, but strong earnings place disposable income at the 89th percentile nationally. The area's SEIFA income ranking places it in the 8th decile.

Treeby is characterized by a predominantly suburban housing profile, with ownership patterns similar to the broader region

Treeby's dwelling structure, as per the latest Census, consisted of 79.0% houses and 21.0% other dwellings (semi-detached, apartments, 'other' dwellings). Perth metro had a higher proportion of houses at 81.2%, with 18.8% being other dwellings. Home ownership in Treeby was lower at 16.0%, with most dwellings mortgaged (68.6%) or rented (15.4%). The median monthly mortgage repayment in Treeby was $2,000, higher than Perth metro's $1,950 and the national average of $1,863. Weekly rent in Treeby was $450, compared to Perth metro's $370 and the national figure of $375.

Treeby features high concentrations of family households, with a higher-than-average median household size

Family households constitute 81.6% of all households, including 41.2% couples with children, 33.2% couples without children, and 6.3% single parent families. Non-family households account for 18.4%, comprising 14.9% lone person households and 3.6% group households. The median household size is 2.7 people, which is larger than the Greater Perth average of 2.6.

Treeby shows strong educational performance, ranking in the upper quartile nationally when assessed across multiple qualification and achievement indicators

Educational attainment in Treeby is notably higher than broader averages. Among residents aged 15 and above, 43.3% have university qualifications, compared to 27.4% in the SA3 area and 27.9% across Western Australia. This high level of educational attainment positions Treeby favourably for knowledge-based opportunities. Bachelor degrees are most prevalent at 30.4%, followed by postgraduate qualifications (9.6%) and graduate diplomas (3.3%).

Vocational credentials are also prominent, with 31.7% of residents aged 15 and above holding such qualifications – advanced diplomas account for 11.5% and certificates for 20.2%. A significant portion of the population is actively engaged in formal education, with 24.4% pursuing it. This includes 7.3% in primary education, 5.8% in tertiary education, and 4.9% in secondary education.

Transport servicing is moderate compared to other areas nationally based on assessment of service frequency, route connectivity and accessibility

Transport analysis indicates 15 active transit stops in Treeby, offering a mix of bus services. These stops are served by four distinct routes, cumulatively facilitating 1,003 weekly passenger trips. Transit accessibility is deemed good, with residents on average situated 346 meters from the nearest stop.

Service frequency averages 143 trips daily across all routes, translating to roughly 66 weekly trips per individual stop.

Treeby's residents boast exceedingly positive health performance metrics with younger cohorts in particular seeing very low prevalence of common health conditions

Health outcomes data shows exceptional results across Treeby, with younger age groups experiencing a very low prevalence of common health conditions. Approximately 62% of Treeby's total population (4,284 people) have private health cover, compared to Greater Perth's 57.9%. Nationally, the average is 55.7%.

Mental health issues and asthma are the most prevalent medical conditions in Treeby, affecting 6.7% and 6.1% of residents respectively. 78.0% of residents report being completely free from medical ailments, compared to Greater Perth's 72.9%. Treeby has 12.4% (861 people) of its population aged 65 and over, lower than Greater Perth's 14.8%. While health outcomes among seniors in Treeby present some challenges requiring more attention, overall results are outstanding.

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 has a high level of cultural diversity, with 35.0% of its population speaking a language other than English at home and 46.8% born overseas. Christianity is the predominant religion in Treeby, accounting for 44.8% of people. Hinduism is notably overrepresented, comprising 8.3%, compared to the Greater Perth average of 1.9%.

The top three ancestry groups are English (22.0%), Australian (18.7%), and Other (15.1%). Some ethnic groups show significant differences: South African (1.5% vs regional 1.1%), Filipino (3.9% vs 2.1%), and Spanish (0.8% vs 0.5%) are notably overrepresented in Treeby.

Treeby hosts a very young demographic, ranking in the bottom 10% of areas nationwide

Treeby's median age is 32 years, which is younger than Greater Perth's average of 37 years and the national average of 38 years. Compared to Greater Perth, Treeby has a higher proportion of residents aged 25-34 (27.0%), but fewer residents aged 5-14 (7.9%). This concentration of 25-34 year-olds is significantly higher than the national average of 14.5%. Post-2021 Census data shows that the proportion of residents aged 55-64 has increased from 5.9% to 7.1%, while the proportion of residents aged 5-14 has decreased from 9.4% to 7.9%. By 2041, demographic modeling suggests Treeby's age profile will change significantly. The number of residents aged 75-84 is projected to increase by 65%, adding 182 residents to reach a total of 460. Residents aged 65 and older are expected to represent 87% of the population growth, while the populations of those aged 15-24 and 0-4 are projected to decline.