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

According to evaluations of ABS demographic releases for the wider region and address listings verified by AreaSearch post-Census, the resident count for the suburb of Treeby is projected to stand at approximately 7,499 as of May 2026. This represents an expansion of 3,285 individuals (78.0%) relative to the 2021 Census, which documented a total of 4,214 residents. This adjustment is deduced from a resident base of 7,350 calculated by AreaSearch using the latest ABS ERP release (June 2025) combined with 950 validated new addresses added since the Census date. This population level yields a density of 910 persons per square kilometer, which aligns closely with the typical figures observed across localities analyzed by AreaSearch. The suburb of Treeby registered a 78.0% expansion rate relative to the 2021 Census, outstripping the national rate of 9.3% and the state benchmark to position it as a regional growth leader. Population increases in this location were primarily fueled by migration from other states, which accounted for roughly 49.0% of the overall population gains in recent times, though all components including overseas migration and natural increase remained positive.

AreaSearch incorporates regional projections from the ABS and Geoscience Australia published in 2024 using 2022 as the base year. For locations lacking this coverage, and to calculate trends beyond 2032, AreaSearch applies cohort-specific growth rates from the latest ABS Greater Capital Region projections released in 2023 based on 2022 data. Forward-looking demographic assessments indicate that the suburb of Treeby is situated within the top quartile of national statistical regions for growth, with projections suggesting a gain of 3,776 individuals by 2041 based on compiled SA2 data, representing an overall increase of 48.4% across the 16 years.

The level of residential development activity in Treeby was found to be higher than 90% of real estate markets across the country

AreaSearch examinations of statistical area building approvals indicate that the suburb of Treeby averages approximately 250 new residential approvals annually, accumulating to an estimated 1,250 dwellings over the preceding 5 financial years. Thus far during FY-26, there have been 114 approvals registered. With an average occupancy of 2.9 new residents per dwelling over the 5 financial years spanning FY-21 to FY-25, residential demand appears robust, supporting local real estate values. Newly approved dwellings carry an average construction value of $467,000, which points to developers focusing on upper-tier, premium housing products. Furthermore, commercial approvals have reached $24.9 million during this financial year, showing ongoing commercial investment.

Relative to Greater Perth, building activity per person in the suburb of Treeby is 486.0% higher, offering prospective buyers plenty of options despite a recent moderation in construction speed. This volume of activity sits well above the national norm, illustrating substantial interest from builders. Recent residential construction has consisted entirely of standalone houses, preserving a low-density environment that appeals to buyers seeking space. Interestingly, builders are focusing on traditional houses at a higher rate than the baseline proportion recorded during the Census (79.0%), highlighting persistent demand for family-sized properties amid broader density trends. A ratio of roughly 32 people for every building approval highlights that this is a developing area.

Looking forward, the suburb of Treeby is projected to add 3,627 residents by 2041 relative to the latest quarterly calculations by AreaSearch. Given the current pace of building, the supply of new dwellings is positioned to satisfy this demand, creating favorable buyer conditions and potentially underpinning growth beyond the baseline projections.

Treeby has moderate levels of nearby infrastructure activity, ranking in the 44thth percentile nationally

Local infrastructure projects, planning changes, and major works have a significant influence on neighborhood performance. AreaSearch has tracked 25 projects expected to influence this locality. Primary projects include Calleya Estate by Stockland, Treeby East Primary School (Planning Name), Tulloch Way Social Housing Development, and Kara at Treeby, with the key developments detailed in the listings.

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

The suburb of Treeby possesses a highly educated labor force with strong representation in essential service industries, an unemployment rate of only 1.0%, and a estimated annual job growth rate of 6.6% according to aggregated statistical area statistics. By March 2026, employed residents numbered 5,036, with the local unemployment rate sitting 3.2% below the Greater Perth average of 4.2%. Labor force participation stands exceptionally high at 82.9% compared to 70.2% across Greater Perth. Census records indicate that a low proportion of residents worked from home, at 8.0%, although this figure was likely influenced by COVID-19 restrictions.

The primary employment sectors for residents are health care & social assistance, professional & technical services, and construction. The local workforce is heavily concentrated in health care & social assistance, showing a specialization rate 1.2 times that of the wider region. Conversely, accommodation & food services is underrepresented, employing only 4.8% of the workforce in the suburb of Treeby compared to 6.8% in Greater Perth. The heavily residential nature of the locality means local employment opportunities are limited, as shown by comparing the count of locally working residents against the total employed population.

Aggregated SALM and ABS data for the broader statistical region indicates that over the 12-month period, employment rose by 6.6% while the labor force expanded by 6.7%, keeping local unemployment stable. By comparison, Greater Perth registered employment growth of 2.0% and labor force growth of 2.5%, resulting in a 0.4 percentage point rise in unemployment. National employment projections from Jobs and Skills Australia dated May-25 offer additional perspective on potential future demand in the suburb of Treeby. These five and ten-year forecasts have been mapped against the local industry profile to estimate future trends. While national employment is projected to grow by 6.6% over five years and 13.7% over ten years, trends vary by sector. Applying these trends to the local industry mix suggests employment for residents of the suburb of Treeby could expand by 6.7% over five years and 14.1% over ten years, representing a basic weighted extrapolation that does not incorporate local population forecasts.

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

According to the latest postcode-level ATO data released for the financial year 2023, taxpaying residents in the suburb of Treeby earn a median income of $72,694 and an average income of $86,768. These figures place the area among the top earning locations nationally, exceeding the Greater Perth median of $60,748 and average of $80,248. Factoring in Wage Price Index growth of 10.93% since the financial year 2023, current estimates correspond to approximately $80,639 for the median and $96,252 for the average as of March 2026. Census data confirms that household, family, and individual incomes are all highly ranked, positioning the area in the 90th percentile nationally. The largest income group comprises 39.9% of local taxpayers (2,992 people) earning between $1,500 and $2,999 weekly, which aligns with the broader regional trend where 32.0% fall into this bracket. A substantial cohort of 37.1% earn more than $3,000 weekly, pointing to high levels of local affluence that support retail spending. Mortgage and rent costs account for 15.6% of household income, but strong earnings keep disposable income in the 89th percentile, with the area ranking in the 8th decile of the SEIFA income index.

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

Residential housing in the suburb of Treeby at the time of the latest Census consisted of 79.0% standalone houses and 21.0% semi-detached, apartment, or other dwelling types, compared to 77.8% houses and 22.1% alternative dwellings across Greater Perth. Home ownership rates in the suburb of Treeby lagged the metropolitan average, sitting at 16.0%, with the remaining properties occupied by residents with a mortgage (68.6%) or renting tenants (15.4%). The median monthly mortgage payment was higher than the metropolitan average at $2,000, while the median weekly rent stood at $450, compared to Greater Perth figures of $1,907 and $350 respectively. On a national level, local mortgage costs exceed the Australian median of $1,863, and weekly rents are significantly higher than the national benchmark of $375.

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

Families make up the majority of households at 81.6%, consisting of couples with children at 41.2%, couples without children at 33.2%, and single-parent homes at 6.3%. Non-family households account for the remaining 18.4%, with single-person households representing 14.9% and group households making up 3.6% of the total. The median household size of 2.7 residents is slightly higher 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 qualification rates in the suburb of Treeby are high, with 43.3% of residents aged 15+ holding a university degree, compared to 27.4% in the SA3 region and 27.9% across Western Australia. This profile positions the local workforce well for professional opportunities. Bachelor degrees are the most common higher qualification at 30.4%, followed by postgraduate degrees at 9.6% and graduate diplomas at 3.3%. Vocational and technical training is also well represented, with 31.7% of the population aged 15+ holding qualifications, including advanced diplomas at 11.5% and certificates at 20.2%.

A significant portion of the local population is enrolled in study, with 24.4% of residents undertaking formal education. This group includes 7.3% in primary school, 5.8% in higher education, and 4.9% in secondary school.

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

Public transport infrastructure includes 15 active stops within the suburb of Treeby, serviced by bus networks. These stops accommodate 4 different routes, delivering a combined total of 1,003 passenger journeys weekly. Transit access is rated highly, with homes located an average of 346 meters from their nearest stop. As a residential area, the majority of workers travel outward, with private vehicles remaining the primary choice for 78% of workers, and 16% commuting by train. Dwellings average 1.6 vehicles. A low proportion of 8.0% of residents worked from home according to the 2021 Census, which may reflect pandemic-era conditions.

Weekly transit schedules average 143 trips daily across local routes, representing approximately 66 weekly trips for each transport stop.

Treeby's residents are extremely healthy with younger cohorts in particular seeing very low prevalence of common health conditions

Health outcomes are positive throughout the suburb of Treeby, with AreaSearch evaluations of mortality and chronic illnesses showing low rates of common health conditions, particularly among younger cohorts. Private health insurance coverage is high, with approximately 62% of residents (4,623 people) holding cover. This compares to 59.0% across Greater Perth and a national average of 55.7%.

Mental health concerns and asthma represent the most frequent diagnoses locally, affecting 6.7% and 6.1% of residents respectively, while 78.0% of the population reported no chronic conditions, compared to 71.9% in Greater Perth. Residents aged 65 and over account for 13.5% of the population (1,012 people), below the metropolitan average of 16.1%. Senior health outcomes present some challenges, ranking lower nationally than the average for the local 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

The suburb of Treeby exhibits high levels of cultural diversity, with 35.0% of residents speaking a language other than English at home and 46.8% born outside Australia. Christianity is the most common religious affiliation, representing 44.8% of residents. However, the most distinct religious concentration is Hinduism, which is practiced by 8.3% of the population, compared to the Greater Perth average of 2.5%.

Regarding family heritage based on parental birthplaces, the most common ancestries are English at 22.0% of the population, which sits below the regional average of 28.0%, followed by Australian at 18.7%, and other backgrounds at 15.1%. Specific demographic cohorts show notable variations, with South Australian backgrounds at 1.5% of the population (compared to 1.0% regionally), Filipino at 3.9% (compared to 1.4%), and Spanish at 0.8% (compared to 0.4%).

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

The median age in the suburb of Treeby is 35 years, which is younger than the Greater Perth average of 37 and the national average of 38. The 25 to 34 demographic is highly represented at 21.2% of the local population, compared to a lower concentration in the 5 to 14 cohort at 9.7%. This concentration of young adults aged 25 to 34 is higher than the national benchmark of 14.6%. Since 2021, the median age has increased by 2.8 years, rising from 32 to 35. Shifts in age distribution show the 55 to 64 group grew from 5.9% to 10.1%, and the 45 to 54 cohort rose from 7.9% to 11.0%. Conversely, the 25 to 34 group fell from 27.6% to 21.2%, and children aged 0 to 4 declined from 10.9% to 6.9%. Population forecasts for 2041 suggest further shifts, with the 25 to 34 cohort expected to grow by 40%, adding 638 residents to reach 2,228.