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 November 2025, the estimated population of Treeby is around 7,118. This figure reflects an increase of 2,904 people from the 2021 Census population of 4,214. The change is inferred from AreaSearch's resident population estimate of 6,902 in June 2024 and an additional 848 validated new addresses since the Census date. This results in a density ratio of 863 persons per square kilometer. Treeby's growth rate of 68.9% since the 2021 Census exceeds both national (8.9%) and state averages, making it a growth leader in the region. Interstate migration contributed approximately 49.0% of overall population gains during recent periods.

AreaSearch is adopting ABS/Geoscience Australia projections for each SA2 area released in 2024 with a base year of 2022. For areas not covered, AreaSearch uses growth rates by age cohort provided by the ABS in its latest Greater Capital Region projections released in 2023 based on 2022 data. Future population dynamics forecast a significant increase in Treeby's top quartile of national statistical areas, with an expected expansion of 1,533 persons to reach 8,651 by 2041, reflecting a reduction of 8.3% 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 indicates Treeby has seen approximately 240 new homes approved annually over the past five financial years, totalling around 1,200 homes. As of FY-26, 56 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 keeping pace with or exceeding demand, offering buyers more options while facilitating population growth.

The average expected construction cost value of new dwellings in Treeby is $467,000. In the current financial year, there have been $24.8 million in commercial approvals, indicating steady investment activity in the area. Compared to Greater Perth, Treeby shows 485% higher building activity per person, reflecting strong developer confidence. All new construction in Treeby has consisted of detached houses, maintaining its traditional low-density character and appealing to those seeking family homes. The location has approximately 26 people per dwelling approval, indicating an expanding market.

Given the expected stable or declining population, Treeby may see reduced housing pressure, potentially presenting buying opportunities.

Treeby has moderate levels of nearby infrastructure activity, ranking in the top 50% nationally

Changes to local infrastructure significantly influence an area's performance. AreaSearch has identified 25 projects likely impacting the area. Notable projects are Provence Estate, Treeby Village, future Treeby Primary School, and Calleya Estate by Stockland. The following details projects expected to be 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 a highly educated workforce with essential services sectors well represented. The unemployment rate in Treeby is 0.8%, lower than Greater Perth's 3.9%.

Employment growth over the past year was estimated at 5.8% based on AreaSearch aggregation of statistical area data. As of June 2025, there are 3,354 residents employed with an unemployment rate of 3.1%, below Greater Perth's rate. Workforce participation in Treeby is 74.9%, higher than Greater Perth's 65.2%. Leading employment industries include health care & social assistance, professional & technical services, and construction.

The area has a particularly strong specialization in health care & social assistance, with an employment share of 1.2 times the regional level. Conversely, accommodation & food services are under-represented at 4.8% compared to Greater Perth's 6.8%. Employment opportunities locally appear limited as indicated by the count of Census working population versus resident population. Between June 2024 and June 2025, employment increased by 5.8%, while labour force increased by 6.0%, causing the unemployment rate to rise by 0.1 percentage points in Treeby. In contrast, Greater Perth experienced employment growth of 3.7% with a similar increase in labour force and unemployment rate. Jobs and Skills Australia's national employment forecasts from Sep-22 project national employment growth at 6.6% over five years and 13.7% over ten years. Applying these projections to Treeby's employment mix suggests local employment should increase by 6.7% over five years and 14.1% over ten years, based on a simple weighting extrapolation for illustrative purposes.

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

AreaSearch released postcode level ATO data for financial year 2022. Treeby's median income among taxpayers was $72,694, with an average of $86,768. These figures were among the highest in Australia, compared to Greater Perth's median of $58,380 and average of $78,020. As of September 2025, estimated incomes would be approximately $83,017 (median) and $99,089 (average), based on Wage Price Index growth of 14.2% since financial year 2022. Census data shows Treeby's household, family, and personal incomes rank highly nationally, between the 90th and 90th percentiles. Income brackets indicate that 39.9% of locals (2,840 people) fall into the $1,500 - 2,999 category, consistent with broader trends across the broader 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 structures, as per the latest Census, consisted of 79.0% houses and 21.0% other dwellings (semi-detached, apartments, 'other' dwellings). This compares to Perth metro's 81.2% houses and 18.8% other dwellings. Home ownership in Treeby was at 16.0%, with mortgaged dwellings at 68.6% and rented ones at 15.4%. The median monthly mortgage repayment was $2,000, higher than Perth metro's average of $1,950. The median weekly rent in Treeby was $450, compared to Perth metro's $370. Nationally, Treeby's mortgage repayments were higher at $2,000 versus the Australian average of $1,863, and rents were substantially above the national figure of $375 at $450.

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

Family households account for 81.6% of all households, consisting of 41.2% couples with children, 33.2% couples without children, and 6.3% single parent families. Non-family households make up the remaining 18.4%, with lone person households at 14.9% and group households comprising 3.6% of the total. 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. 43.3% of residents aged 15+ have university qualifications, compared to 27.4% in the SA3 area and 27.9% in Western Australia overall. Bachelor degrees are most common at 30.4%, followed by postgraduate qualifications (9.6%) and graduate diplomas (3.3%). Vocational credentials are also prevalent, with 31.7% of residents aged 15+ holding such qualifications - advanced diplomas account for 11.5% and certificates for 20.2%.

A significant 24.4% of the population is actively engaged in formal education, including 7.3% in primary education, 5.8% in tertiary education, and 4.9% pursuing secondary education. Treeby Primary School serves the local community with an enrollment of 467 students as of a recent report, and the area has above-average socio-educational conditions (ICSEA: 1084). The single school focuses exclusively on primary education, with secondary options available in nearby areas. School places per 100 residents stand at 6.6, below the regional average of 11.4, indicating some students may attend schools outside Treeby.

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

Transport analysis shows 14 active stops in Treeby served by buses. Four routes operate here, offering 1,107 weekly passenger trips combined. Residents' average distance to the nearest stop is 346 meters, indicating good accessibility.

Daily service frequency averages 158 trips across all routes, translating to around 79 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 excellent results across Treeby, with younger cohorts particularly experiencing low prevalence of common health conditions. Approximately 62% of Treeby's total population (4,388 people) has private health cover, compared to Greater Perth's 56.4%. Nationally, the average is 55.3%.

Mental health issues and asthma are the most prevalent medical conditions in Treeby, affecting 6.7% and 6.1% of residents respectively. A total of 78.0% of residents report being completely free from medical ailments, compared to Greater Perth's 72.9%. As of 2021, 12.4% of Treeby's population is aged 65 and over (882 people), lower than the 14.8% in Greater Perth. However, health outcomes among seniors require more attention than those in the broader population.

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. The predominant religion in Treeby is Christianity, accounting for 44.8% of the population. However, Hinduism is significantly overrepresented, making up 8.3% compared to the Greater Perth average of 1.9%.

In terms of ancestry, the top three groups are English (22.0%), Australian (18.7%), and Other (15.1%). Notably, South African (1.5%) Filipino (3.9%), and Spanish (0.8%) ethnicities are overrepresented in Treeby compared to regional averages.

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 significantly lower than Australia's 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 well above the national average of 14.5%. According to data from the post-2021 Census, 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%. Demographic modeling suggests that Treeby's age profile will change significantly by 2041, with the strongest projected growth in the 75-84 cohort (62%), adding 177 residents to reach a total of 462. The population is expected to age further as residents aged 65 and older represent 90% of anticipated growth. Meanwhile, population declines are projected for the 45-54 and 15-24 age cohorts.