Thornlie

SA2

Greater Perth / Gosnells

 
 
 
 
 
 
 
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Statistical Area (SA2) Boundary Analysis

This analysis uses ABS Statistical Areas Level 2 (SA2) boundaries, which can materially differ from Suburbs and Localities (SAL) even when sharing similar names.

SA2 boundaries are defined by the Australian Bureau of Statistics and are designed to represent communities for statistical reporting (e.g., census and ERP).

Suburbs and Localities (SAL) represent commonly-used suburb/locality names (postal-style areas) and may use different geographic boundaries. For comprehensive analysis, consider reviewing both boundary types if available.

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Sales ActivityProperty Sales Trends in Thornlie

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DemographicsPopulation Growth in Thornlie

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Thornlie has an estimated 25,990 residents, up from 23,665 at the 2021 Census — a change of 2,325 people, or 9.8%. Growth has averaged 1.2% a year over five years. Overseas migration accounts for 79.1% of that increase. That puts 2,243 residents on each square kilometre. Population is estimated from ABS Estimated Resident Population releases and GNAF address data, re-based from the 2021 Census and updated annually.

Detail

According to research conducted by AreaSearch, Thornlie accommodates approximately 25,990 inhabitants as of Aug 2026. This figure represents an expansion of 2,325 people (9.8%) compared to the 23,665 residents tallied in the 2021 Census. Such demographic movement is deduced from the ABS estimated resident population figure of 25,963 noted in June 2025 alongside 69 validated new addresses registered following the Census. The resulting population density stands at 2,242 persons per square kilometer, outpacing the typical ratio across nationally analyzed communities. Outperforming the wider Australian expansion rate of 9.5%, Thornlie's 9.8% uptick since the 2021 census establishes the suburb as an area growth benchmark, primarily propelled by inbound overseas migration which made up around 79.1% of recent net demographic additions.

Demographic modeling relies upon ABS/Geoscience Australia SA2-level figures published in 2024 using 2022 baseline records. For regions outside this coverage and when projecting beyond 2032, cohort-based expansion rates from the 2023 ABS Greater Capital Region release (utilizing 2022 figures) are incorporated. Looking forward, local demographic gains are forecast to track slightly under the national statistical area median, adding 1,284 persons by 2041 relative to recent annual ERP baselines, which amounts to a cumulative rise of 4.8% over the 16 years.

Frequently Asked Questions - Population

What is the latest population estimate for the Thornlie SA2?
Total population for the Thornlie SA2 was estimated to be approximately 25,990 as at Aug 26. This is based upon an estimated resident population of 25,963 from the ABS up to June 2025.
How has the population in the Thornlie SA2 changed since 2021?
The thornlie sa2 has added approximately 2,325 people and shown a 9.82% increase from the 23,665 people recorded at the 2021 Census period.
What is the population density in the Thornlie SA2?
The population density in the Thornlie SA2 is estimated at 2,242 persons per square kilometer based on the latest population estimate.
How much has the population grown over the past 10 years in the Thornlie SA2?
Over the past 10 years, the population in the Thornlie SA2 has shown a compound annual growth rate of 0.6% per annum.
What are the main drivers of population growth in the Thornlie SA2?
Population growth in the Thornlie SA2 is driven by: Overseas migration (79.1%), Natural increase (20.9%), Interstate migration (0.0%). The primary driver is Overseas migration, contributing 79.1% of overall population gains.

Residential SupplyHousing Development & Building Approvals in Thornlie

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144 new dwellings have been approved in Thornlie over the past five years, an average of 28 a year. That places the area in the 52nd percentile for residential development activity nationally, about 1 approvals per 1,000 residents a year. Of the 28 dwellings approved in the latest reporting year, 93% were detached houses and the rest townhouses or apartments. Figures come from ABS building approvals aggregated to this SA2 boundary and are updated monthly as the ABS releases them.

Detail

Residential building authorisations in Thornlie have tracked at roughly 28 dwellings annually, amounting to 144 homes across the previous 5 financial years. With an inflow rate of 10.8 new residents per year for every home built over the past 5 financial years (between FY-22 and FY-26), local housing requirements heavily outpace construction, exerting upward pressure on property values and intensifying buyer competition. Nevertheless, an average construction value of $269,000 provides relatively affordable entry points below regional averages, while commercial activity remains steady with $24.9 million recorded in commercial approvals during the current financial year.

Building activity across Thornlie remains subdued compared with Greater Perth, falling 73.0% below the regional per capita benchmark. This constrained supply pipeline typically bolsters values and interest in existing properties. Construction volumes also trail nationwide figures, reflecting an established market profile and potential physical capacity limits. Recent building activity is composed of 93.0% detached dwellings and 7.0% attached dwellings, maintaining the suburb's traditional character oriented toward buyers seeking detached homes with ample space. An indicator of market maturity is further demonstrated by a ratio of roughly 752 people per dwelling approval. Projections indicate that Thornlie will gain 1,257 residents by 2041, based on the latest quarterly update from AreaSearch. If prevailing building volumes continue, the supply of new housing may fall short of demographic expansion, likely driving stronger buyer competition and supporting higher property prices.

Frequently Asked Questions - Development

How many dwelling approvals have occurred in the Thornlie SA2 recently?
Dwelling approval activity in the the Thornlie SA2 area has seen 69 residential approvals over the past two financial years, based on AreaSearch's SA2 aggregation method. The Thornlie SA2's current population of 25,990 has been supported by 28 approvals on average over recent years.
How does the Thornlie SA2's development activity compare to the broader region?
The Thornlie SA2 has seen 0.11 approvals per 100 people in recent years, compared to 0.72 approvals in the broader region. This means that one dwelling has been approved for every 752 people in the Thornlie SA2, compared to one for every 118 in the broader region.
Is the Thornlie SA2 keeping up with housing demand?
With the population expected to increase by 1,257 people by 2041, around 629 new dwellings will be necessary. Recent approval levels may be insufficient to meet these forecasts, considering the census average of 2.0 persons per dwelling.
What has been the trend in development approvals over the past five years in the Thornlie SA2?
Looking at development activity over the past five years, the Thornlie SA2's approval levels have been slightly above the yearly average of 28, showing modest growth in recent years.
How many dwellings will be needed to accommodate future population growth in the Thornlie SA2?
The population in the Thornlie SA2 is expected to grow by 1,257 people by 2041, necessitating approximately 629 new dwellings. This calculation is based on the current census average of 2.0 persons per dwelling in the area.
How does recent development compare to population growth in the Thornlie SA2?
Over the past five years, the population in the Thornlie SA2 has grown by approximately 2,195 people, while 144 residential approvals were recorded. This equates to a ratio of 15.2 people added for each new dwelling approval. This high ratio suggests strong population growth relative to housing supply, potentially indicating unmet housing demand.
Are there opportunities for residential developers in the Thornlie SA2?
With dwelling approval activity running at an average of 28 approvals per year and a population of 25,990, the market appears to be reasonably balanced between supply and demand, presenting moderate opportunities for well-positioned developments. With the population expected to increase by 1,257 people by 2041, around 629 new dwellings will be necessary. Current approval trends may be insufficient to meet forecast demand, indicating strong development opportunities.
Approvals Pipeline Development applications near Thornlie

Development applications around Thornlie

Development approvals is a new addition to AreaSearch. We’re actively expanding council coverage and refining the dataset — details and statuses for some councils may be partial. Check back regularly for the latest pipeline.
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SOURCE: Planning portals and council registers, compiled by AreaSearch. Distance & bearing measured from the suburb midpoint.

Project PipelineInfrastructure & Major Projects in Thornlie

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AreaSearch tracks 3 current infrastructure and development projects inside Thornlie, worth an estimated $268 million. A further 121 sit in the immediately surrounding suburbs, taking the tracked pipeline within reach of the area to $16.4 billion. 37 are already under construction and 50 are due for completion within three years. The pipeline spans communities, precincts & urban renewal, transport & logistics and sports & recreation. Records are compiled from Infrastructure Australia, state agencies, council planning portals and public announcements, reviewed and updated daily, then ranked by proximity, construction stage, completion horizon and project scale.

Detail

Local infrastructure projects, strategic plans, and major developments have a significant bearing on community outcomes. AreaSearch has identified 20 notable projects expected to influence the locality. Prominent initiatives include the Nicholson Road, Garden Street and Yale Road Grade Separation, the West Canning Vale Outline Development Plan, the Tulloch Way, Canning Vale Development, and the Forest Lakes District Centre Precinct Structure Plan, with relevant details outlined in the project summary.

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

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Frequently Asked Questions - Infrastructure

What are some of the major infrastructure and planning changes likely to influence the Thornlie SA2?
Key infrastructure and planning changes likely to influence the Thornlie SA2 include: Nicholson Road, Garden Street and Yale Road Grade Separation (Planning); West Canning Vale Outline Development Plan (Approved); Tulloch Way, Canning Vale Development (Approved); Forest Lakes District Centre Precinct Structure Plan (Approved); and North Canning Vale Primary School (planning name) (Under Assessment). These projects represent significant developments that will shape the area's future infrastructure landscape.
What types of infrastructure projects are impacting the Thornlie SA2?
Infrastructure development impacting the Thornlie SA2 spans multiple sectors including Communities, Precincts & Urban Renewal, Residential Development, and Sports & Recreation, among others.
What is the scale of infrastructure investment impacting the Thornlie SA2?
Infrastructure investment analysis indicates substantial capital deployment exceeding $1.6 billion in projects that will impact the extended area, with a notable concentration of investment within the immediate the Thornlie SA2 vicinity.
How does the Thornlie SA2's infrastructure development compare to other areas?
Infrastructure development activity impacting the Thornlie SA2 currently ranks below national averages at the 15thth percentile.
Forest Lakes District Centre Precinct Structure Plan
Category: Communities, Precincts & Urban Renewal
Stage: Approved | Est. Comp: 2033
Source / Links: Link 1   Link 2  

A Precinct Structure Plan for the Forest Lakes District Centre at Thornlie, prepared by the City of Gosnells and approved by the Western Australian Planning Commission in November 2024. Covering 7.762 hectares around the existing Forest Lakes Shopping Centre, the plan provides the framework to consolidate and expand the established centre into a fully developed district centre, supporting up to 21,314 square metres of retail net lettable area by 2033. It allows for new mixed-use development, additional shops, offices, medical and community uses, an upgraded public realm and improved pedestrian connectivity, with up to 932 parking bays delivered as remaining land is developed.Recent activity includes civil and car park works between October and December 2025 to accommodate a new Oporto restaurant and drive-through near the Don Russell Performing Arts Centre, and Council approval in February 2026 of a 4,319 square metre single-storey commercial centre at 3 Finsbury Drive, including a childcare centre for up to 76 children, medical and allied health tenancies, shops, offices and a recreation facility.

Communities, Precincts & Urban Renewal

West Canning Vale Outline Development Plan
Category: Communities
Stage: Approved | Est. Comp: 2030
Source / Links: Link 1   Link 2  

The West Canning Vale Outline Development Plan (ODP) guides subdivision and development in the area bound by Campbell, Nicholson and Ranford Roads, Canning Vale. The ODP is operational under the City of Gosnells Local Planning Scheme No. 24, gazetted September 2025. The Development Contribution Plan was completed and closed in March 2023, with surplus funds returned to contributors. The area is now served by two new METRONET Thornlie-Cockburn Link stations at Nicholson Road and Ranford Road, which opened 9 June 2025, significantly improving public transport access and supporting long-term residential and mixed-use development within the ODP area.

Communities

North Canning Vale Primary School (planning name)
Category: Education & Training
Stage: Planning | Est. Comp: 2028
Source / Links: Link 1   Link 2  

Proposed new Western Australian public primary school planned to service growth in northern Canning Vale and relieve enrolment pressure on surrounding schools. As of July 2026 the Department of Education lists planned school openings through 2028, however North Canning Vale Primary School is not yet included, indicating the project remains in strategic planning or may proceed under a revised name or timetable.

Education & Training

Tulloch Way, Canning Vale Development
Category: Residential Development
Stage: Approved | Est. Comp: 2027
Source / Links: Link 1   Link 2  

The Department of Housing and Works is progressing a social and affordable housing development on 8,500 square metres of State-owned land in Tulloch Way, Canning Vale. The project will deliver a mix of one, two and three-bedroom social and affordable rental homes, including 19 townhouses and 31 apartments, built to Silver Level Liveable Housing Australia standard. Located adjacent to the new Nicholson Road Station on the METRONET Thornlie-Cockburn Link, providing direct access to public transport with journeys to Perth CBD in under 30 minutes.

Residential Development

Southern River Business Park
Category: Business Parks & Technology Hubs
Stage: Construction | Est. Comp: 2026
Source / Links: Link 1   Link 2  

The Southern River Business Park is a major 51-lot commercial and light industrial development by the City of Gosnells. Spanning 20 hectares, the project is designed to address the shortage of industrial land in Perth's south-east. The development includes significant environmental considerations with three large public open space areas acting as buffers for adjacent wetlands. As of 2026, civil works including road sealing, utility connections, and extensive landscaping are being finalized following the successful sale of all lots under contract.

Business Parks & Technology Hubs

Maddington Central Redevelopment
Category: Communities, Precincts & Urban Renewal
Stage: Planning | Est. Comp: 2028
Source / Links: Link 1   

A major transit-oriented town centre urban renewal project spanning 13 hectares at Maddington Central, led by Sirona Urban and Realside Property, incorporating up to 3,500 new residential dwellings, revitalised retail, and direct pedestrian links to Maddington station.

Communities, Precincts & Urban Renewal

Central Maddington Outline Development Plan
Category: Communities, Precincts & Urban Renewal
Stage: Approved | Est. Comp: 2028
Source / Links: Link 1   Link 2  

The Central Maddington Outline Development Plan (ODP) provides a framework for the coordinated redevelopment of approximately 90 hectares surrounding the Maddington Railway Station. As of early 2026, the plan remains operational under the City of Gosnells Local Planning Scheme No. 24 (gazetted in late 2025). The ODP facilitates increased residential density, new road connections, and improved public open space to support urban renewal and transit-oriented development.

Communities, Precincts & Urban Renewal

Burslem Drive Duplication (Stage 3)
Category: Transport & Logistics
Stage: Construction | Est. Comp: 2026
Source / Links: Link 1   

Road duplication works delivered by the City of Gosnells along Burslem Drive from Olga Road towards the Canning River bridge. The project expands the corridor to a dual carriageway with improved intersections, upgraded cycling/pedestrian paths, and enhanced traffic management.

Transport & Logistics

Jobs & IndustryEmployment Trends in Thornlie

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13,260 residents of Thornlie are employed, from a labour force of 14,095. Unemployment sits at 5.9%, with participation at 66.3%. Weighted for its industry mix, the area's sectors are forecast to grow about 6.0% nationally over five years. That reflects industry composition only and makes no allowance for local population growth. The working-day population is estimated at 20,663, about 80% of the resident population, so more people leave the area for work than travel in. Unemployment and labour force come from ABS Small Area Labour Markets, updated quarterly; the industry and occupation profile is from the 2021 Census.

Detail

Thornlie features a skilled workforce with strong participation across industrial and manufacturing sectors, accompanied by a 5.9% unemployment rate and 1.3% annual job growth. In March 2026, employed residents reached 13,260, while the local unemployment rate sat 1.7% higher than the 4.2% registered across Greater Perth. Labour force participation was somewhat subdued at 66.3% compared to the regional figure of 69.9%. Census data indicated that only 5.2% of workers performed their duties from home, though pandemic containment measures should be kept in mind. Locally resident workers are heavily engaged in health care & social assistance, retail trade, and construction.

A clear economic specialty exists in transport, postal & warehousing, where the local concentration is 1.6 times the broader metropolitan average. Conversely, professional & technical roles account for a modest 5.1% of employment compared to 8.2% across the wider region. Comparing local job numbers against the resident workforce suggests that the suburb is predominantly residential with fewer internal workplace opportunities. AreaSearch assessment of ABS and SALM metrics indicates that across the twelve months leading to March 2026, local employment expanded by 1.3% while the labour pool grew by 2.0%, elevating the unemployment rate by 0.6 percentage points. Over the identical timeframe, Greater Perth saw employment rise by 2.0% and the labour force expand by 2.5%, with unemployment increasing by 0.4 percentage points. Forward-looking projections issued by Jobs and Skills Australia in Mar-26 outline broader workforce trajectories. Across Australia, employment is anticipated to climb by 6.6% over five years and 13.7% over ten years, though sectoral rates vary widely. Weighting these projections against Thornlie's industry footprint points to local employment expansions of 6.0% over five years and 12.8% over ten years, noting that this simple illustrative weighting does not adjust for local population projections.

Frequently Asked Questions - Employment

What is the employment situation in the Thornlie SA2?
As of March 2026, the Thornlie SA2 has approximately 13,260 employed residents with an unemployment rate of 5.9%. The unemployment rate is moderate, indicating some available workforce capacity. Employment indicators are below the national average, suggesting room for improvement.
How does the Thornlie SA2's unemployment rate compare to the broader region?
As of March 2026, the unemployment rate in the Thornlie SA2 stands at 5.9%, which is 1.7 percentage points above Greater Perth's rate of 4.2%. This higher unemployment rate may indicate local labour market challenges. For comparison, the national unemployment rate is 4.2%.
What are the major employment sectors in the Thornlie SA2?
The employment landscape in the Thornlie SA2 is dominated by several key sectors. The largest employers are health care & social assistance (13.8% of employment), retail trade (10.1%), and construction (9.2%). The relatively diverse employment base, with the top three sectors comprising 33.1% of jobs, provides economic resilience. Other significant employers include education & training and transport, postal & warehousing.
How has employment changed recently in the Thornlie SA2?
Over the past year to March 2026, the Thornlie SA2 has experienced employment growth, with total employment increasing while the labour force increased. As a result, the unemployment rate has rise. By comparison, Greater Perth saw employment increased and its unemployment rate rose.
What is the workforce participation rate in the Thornlie SA2?
The workforce participation rate in the Thornlie SA2 is 66.3%, which represents the proportion of working-age residents who are either employed or actively seeking work. This healthy participation rate reflects good employment opportunities and workforce engagement. The local rate trailing the Greater Perth average of 69.9%, showing similar workforce dynamics to the broader region.
Which industries are over-represented in the Thornlie SA2's employment market?
The thornlie sa2 shows notable specialization in transport, postal & warehousing, which employs 7.6% of the local workforce compared to 4.7% regionally. This concentration suggests the area has developed competitive advantages in this sector.
What are the employment growth prospects for the Thornlie SA2?
Based on Jobs and Skills Australia projections applied to the Thornlie SA2's industry mix, employment is expected to grow by 6.0% over the next five years and 12.8% over ten years. This compares to national growth expectations of 6.6% over five years. Steady growth is anticipated across multiple sectors, providing diverse employment opportunities.
How does the job market in the Thornlie SA2 compare nationally?
The thornlie sa2's employment market shows below-average performance in national comparisons. While employment opportunities exist, the area faces more challenges than many other regions. Recent job advertisement trends show the broader employment region saw a 0.1% decline, ranking 14.0th out of 37 regions nationally.
What employment opportunities exist for skilled workers in the Thornlie SA2?
Skilled workers will find good opportunities in the Thornlie SA2, with skilled sectors accounting for 30.2% of employment. Key sectors for skilled workers include health care & social assistance (13.8%), education & training (8.4%), and professional & technical (5.1%). With projected employment growth of 6.0% over five years, demand for skilled workers is expected to remain strong.

EarningsHousehold Income in Thornlie

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Median household income in Thornlie is $1,571 a week (about $82,000 a year), with median personal income at $682 a week. ATO records put median taxable income at $52,702 a year against an average of $61,660. Household income is from the 2021 Census; taxable income is from ATO Taxation Statistics for the latest financial year available, indexed forward using the ABS Wage Price Index.

Detail

Taxation records compiled by AreaSearch from the ATO for financial year 2023 show personal earnings in the Thornlie SA2 tracking below national averages. Taxpayer median earnings were $52,702 while the average reached $61,660, in comparison to $60,748 and $80,248 across Greater Perth. Factoring in Wage Price Index growth of 10.93% following financial year 2023 places updated estimates at roughly $58,462 (median) and $68,399 (average) as of March 2026. Findings from the Census 2021 place individual, family, and household earnings within moderate statewide rankings, between the 25th and 39th percentiles. A cohort of 8,992 individuals, or 34.6% of residents, earns between $1,500 - 2,999, mirroring the metropolitan proportion of 32.0%.

After meeting shelter costs, households retain 85.0% of earnings for general living needs.

Frequently Asked Questions - Income

What is the median taxable income in the Thornlie SA2?
Based on Wage Price Index adjustments to March 2026, the estimated median taxable income in the Thornlie SA2 is approximately $58,462. The official ATO data from FY-23 recorded a median of $52,702.
What is the average taxable income in the Thornlie SA2?
Based on Wage Price Index adjustments to March 2026, the estimated average taxable income in the Thornlie SA2 is approximately $68,399. The official ATO data from FY-23 recorded an average of $61,660.
How does the median taxable income in the Thornlie SA2 compare to the region?
Based on Wage Price Index adjustments to March 2026, the estimated median taxable income in the Thornlie SA2 is approximately $58,462 compared to $67,388 in Greater Perth. The official ATO data from FY-23 shows $52,702 and $60,748 respectively.
How does the average taxable income in the Thornlie SA2 compare to the region?
Based on Wage Price Index adjustments to March 2026, the estimated average taxable income in the Thornlie SA2 is approximately $68,399 compared to $89,019 in Greater Perth. The official ATO data from FY-23 shows $61,660 and $80,248 respectively.
What are the main income cohorts in the Thornlie SA2 according to the 2021 Census?
As per the 2021 Census, the income bracket containing the largest proportion (~34.6% / 8,992 persons) of the Thornlie SA2's population is the $1,500 - 2,999 cohort.
How do the main income cohorts in the Thornlie SA2 compare to the region?
The largest income cohort in the Thornlie SA2 is the $1,500 - 2,999 group, representing about 34.6% of the population. In comparison, Greater Perth's largest income cohort is the $1,500 - 2,999 group, representing 32.0% of its population, according to the 2021 Census.
What is the median household income in the Thornlie SA2 according to the 2021 Census?
The 2021 Census data indicates that the median household income in the Thornlie SA2 is $1,571/wk.
What is the median family income in the Thornlie SA2 according to the 2021 Census?
According to the 2021 Census, the median family income in the Thornlie SA2 is $1,825/wk.
What is the median personal income in the Thornlie SA2 according to the 2021 Census?
The 2021 Census shows that the median personal income in the Thornlie SA2 is $682/wk.
How does the Thornlie SA2's income rank nationally?
The Thornlie SA2's income level is lower than average on a national basis according to the latest ATO data aggregated by AreaSearch for FY-23. The Thornlie SA2's median income among taxpayers is $52,702 and the average income stands at $61,660, which compares to figures for Greater Perth's of $60,748 and $80,248 respectively. Based on Wage Price Index growth of 10.93% since FY-23, current estimates would be approximately $58,462 (median) and $68,399 (average) as of March 2026.
What is the disposable income in the Thornlie SA2?
The estimated disposable income in the Thornlie SA2 is $5,784 per year according to AreaSearch analysis.
How does the Thornlie SA2's disposable income compare to the region?
The thornlie sa2's disposable income is $5,784 compared to $6,842 for Greater Perth, based on AreaSearch analysis.

Housing StockHousing & Dwellings in Thornlie

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Thornlie had 8,401 occupied dwellings at the 2021 Census, 91% detached houses and 1% apartments. 44% are owned with a mortgage, 22% rented and 34% owned outright. At that Census the median rent was $330 a week and the median mortgage repayment $1,625 a month. Rent absorbs 21.0% of household income here and mortgage repayments 23.9%. Dwelling stock, tenure and housing costs are 2021 Census measures — the only source that counts dwellings at this boundary size.

Detail

At the time of the latest Census, Thornlie's housing landscape was dominated by detached houses at 91.1%, with semi-detached structures, units, and other formats accounting for 8.8%, compared against 77.8% houses and 22.1% other dwellings throughout metropolitan Perth. Outright homeownership was elevated at 34.3% relative to the metropolitan benchmark, with mortgaged properties comprising 43.9% and rental housing representing 21.7%. Typical monthly mortgage obligations stood at $1,625, noticeably below the metropolitan level of $1,907, while median weekly rent was $330 compared to $350 across the metro area. On a nationwide scale, local mortgage costs remain well below the Australian benchmark of $1,863, and rents sit substantially lower than the national figure of $375.

Frequently Asked Questions - Housing

What percentage of homes are owned vs rented in the Thornlie SA2?
In the Thornlie SA2, 34.3% of homes are owned outright, 43.9% are owned with a mortgage, and 21.7% are rented.
What percentage of dwellings in the Thornlie SA2 are houses?
According to the latest data, 91.1% of dwellings in the Thornlie SA2 are houses.
What percentage of dwellings in the Thornlie SA2 are apartments or units?
In the Thornlie SA2, 1.2% of dwellings are apartments or units, with an additional 7.6% being semi-detached dwellings.
What is the level of outright home ownership in the Thornlie SA2?
Outright home ownership in the Thornlie SA2 stands at 34.3%, compared to 29.3% in Greater Perth.
What is the median monthly mortgage repayment in the Thornlie SA2?
The median monthly mortgage repayment in the Thornlie SA2 is $1,625, compared to $1,907 in Greater Perth.
What is the median weekly rent in the Thornlie SA2?
The median weekly rent in the Thornlie SA2 is $330, compared to $350 in Greater Perth.
What is the distribution of rental prices in the Thornlie SA2?
In the Thornlie SA2, 6.0% of rentals are $0-149/week, 51.7% are $150-349/week, 41.8% are $350-649/week, 0.3% are $650-949/week, and 0.2% are $950+/week.
What is the average monthly housing cost in the Thornlie SA2?
The aggregate monthly housing cost in the Thornlie SA2 is $1,023, which represents the average monthly cost across all housing types.
What percentage of income do residents spend on housing in the Thornlie SA2?
In the Thornlie SA2, households with mortgages typically spend 23.9% of their income on mortgage repayments, while renters spend 21.0% of their income on rent.
How crowded are homes in the Thornlie SA2?
The average persons per bedroom ratio in the Thornlie SA2 is 0.8, indicating the level of household density.
How does housing affordability in the Thornlie SA2 compare to the region?
Housing affordability in the Thornlie SA2 shows mortgage holders spending 23.9% of income on repayments (vs 23.6% regionally), while renters spend 21.0% of income on rent (vs 18.8% regionally).
What types of dwellings are most common in the Thornlie SA2?
The dwelling mix in the Thornlie SA2 consists of 91.1% detached houses, 7.6% semi-detached dwellings, 1.2% apartments, and 0.0% other dwelling types.
What is the weighted average housing cost based on tenure mix in the Thornlie SA2?
Factoring in the ownership distribution, the weighted average monthly housing cost is approximately $1,023. This accounts for outright owners paying no housing costs, mortgage holders paying $1,625/month, and renters paying $1,429/month.
How affordable is housing in the Thornlie SA2 relative to local incomes?
Housing in Thornlie consumes approximately 15.0% of median household income ($6,802 monthly), indicating costs are highly affordable. The generally accepted benchmark is that housing should not exceed 30% of household income.
How do proposed developments compare to existing housing types in the Thornlie SA2?
Recent development applications in Thornlie show attached dwellings contributing 6% of approvals compared to 9% of existing stock, while detached houses represent 94% of applications versus 91% of current dwellings. This suggests development patterns consistent with existing housing mix. Density increases remain below national trends.

HouseholdsHousehold Composition in Thornlie

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Thornlie counted 8,401 households at the 2021 Census, an estimated 9,226 today, averaging 2.7 people each. 35% are couples with children, against 27% couples without children. 21% of households are people living alone, and families average 1.7 children. Household and family composition is measured only by the Census, so these are 2021 figures.

Detail

Families constitute 76.2% of all Thornlie households, led by couples with children (35.4%), couples without children (26.8%), and single parent families (12.5%). Non-family living arrangements account for the remaining 23.8%, comprising lone person households at 21.0% and group arrangements at 2.8%. The typical household includes 2.7 people, slightly higher than the Greater Perth standard of 2.6.

Frequently Asked Questions - Households

How many households are in the Thornlie SA2?
As of the 2021 Census, the Thornlie SA2 had 8,401 households. Based on population growth patterns, this has grown by approximately 9.8% to an estimated 9,226 households today.
What is the typical household size?
The median household size in the Thornlie SA2 is 2.7 people. This compares to 2.6 in Greater Perth and reflects the area's household composition mix.
What types of households are most common?
Family households dominate at 76.2% of all households. The remaining households consist of lone person households (21.0%), group households (2.8%), and other household types (0.0%).
How are families structured in the area?
Among the 6,401 family households, 35.4% are couples with children, 26.8% are couples without children at home, and 12.5% are single parent families. This mix shapes local demand for schools, family services, and housing types.
How does the Thornlie SA2 compare to regional household patterns?
Compared to Greater Perth, the Thornlie SA2 shows distinct household patterns. This family-oriented profile influences local demand for family homes, schools, and children's services.
What is the average family size?
Families in the Thornlie SA2 have an average of 1.7 children, slightly above the Greater Perth average of 1.6. This influences local demand for child-related services and larger family homes.
What are the marriage patterns in the Thornlie SA2?
Marriage patterns reveal 50.6% of the adult population are currently married, while 33.7% have never married. This compares to 47.6% married and 36.1% never married across Greater Perth.
How significant are single-person households?
Single-person households represent 21.0% of all households in the Thornlie SA2, similar to the regional average of 24.9%. This affects demand for smaller dwellings and single-person accommodation.
Are shared living arrangements common?
Group households (unrelated people sharing) account for 2.8% of households, well below the Greater Perth average of 3.5%. This low rate suggests limited student or young professional shared accommodation.
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EducationSchools & Education in Thornlie

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21.3% of adults in Thornlie hold a university qualification, including 15.1% with a bachelor degree and 4.4% with postgraduate qualifications. A further 25.3% hold a vocational qualification. 7 schools serve the area, with 4,141 enrolment places and an average ICSEA of 991 against a national benchmark of 1,000. Qualifications come from the 2021 Census; school enrolments, ICSEA and results come from ACARA's current release.

Detail

Tertiary educational attainment among Thornlie residents is lower than broader standards, with 21.3% of those aged 15+ holding university credentials compared to 30.4% nationwide, indicating opportunities for further skill advancement. Bachelor degrees represent 15.1%, followed by postgraduate awards at 4.4% and graduate diplomas at 1.8%. Vocational qualifications are prominent, with 36.2% of individuals aged 15+ possessing technical training, comprising certificates (25.3%) and advanced diplomas (10.9%). Participation in study is active, with 29.8% of the local population currently engaged in formal education. Primary school students constitute 10.2%, secondary students represent 7.9%, and 4.9% are enrolled in tertiary studies.

Frequently Asked Questions - Education

What percentage of people in the Thornlie SA2 have university qualifications?
21.3% of people aged 15 and over in the Thornlie SA2 have university qualifications, compared to 30.1% in the broader region.
What percentage of people in the Thornlie SA2 have no formal qualifications?
42.5% of people aged 15 and over in the Thornlie SA2 have no formal qualifications, compared to 35.6% regionally.
How does the Thornlie SA2's education level compare to national averages?
The thornlie sa2 ranks in the 41th percentile nationally for education based on AreaSearch's analysis of qualification and performance metrics.
What types of qualifications are most common in the Thornlie SA2?
The most common qualifications in the Thornlie SA2 are: Certificate (25.3%), Bachelor Degree (15.1%), Advanced Diploma (10.9%).
What proportion of the Thornlie SA2's population is currently attending educational institutions?
29.8% of the population in the Thornlie SA2 is currently engaged in formal education, with 10.2% in primary school, 7.9% in secondary school, 4.9% at university.
What is the ICSEA score for schools in the Thornlie SA2?
The average ICSEA (Index of Community Socio-Educational Advantage) score for schools in the Thornlie SA2 is 991, indicating below-average socio-educational advantage compared to the national average of 1000.
How many schools are located within the Thornlie SA2?
There are 7 schools within the Thornlie SA2, with a combined enrollment of approximately 4,141 students.
What types of schools are available in the Thornlie SA2?
The thornlie sa2 includes 5 primary schools, 1 secondary school, 1 combined school.

Schools Detail

AmenitiesServices & Amenities in Thornlie

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Getting AroundTransport & Commuting in Thornlie

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Public transport in Thornlie reaches 136 stops on 16 routes, timetabled for about 3,800 services a week. The typical home sits about 190 m from its nearest stop. Buses carry the largest share of public transport commuters. Households keep an average of 1.6 vehicles. Stop and service counts are built from operators' published GTFS timetables and refresh with each timetable release; vehicle ownership is from the 2021 Census.

Detail

An assessment of local transit networks identifies 136 active transport stops across Thornlie, incorporating both bus and rail options. These facilities are served by 16 distinct routes generating 3,812 weekly passenger trips. Transit access is highly convenient, with residents residing an average of 193 meters from their closest boarding point. Given the residential orientation of the suburb, private vehicles serve as the main commuting method for 83% of workers, while 9% travel by train, and vehicle ownership averages 1.6 per dwelling. At the 2021 Census, 5.2% of workers worked from home, which may have been influenced by COVID-19 settings.

Public transport operations provide an average frequency of 544 trips per day across the network, translating to roughly 28 weekly trips per individual stop. The 100 nearest stops to the geographic centerpoint are presented on the accompanying map.

Frequently Asked Questions - Transport

How many public transport stops are in Thornlie?
There are 136 public transport stops within the Thornlie SA2.
How frequent are the transport services in Thornlie?
the Thornlie SA2 has 3,812 weekly trips across 16 routes, averaging 544 trips per day.
How far are residents from public transport in Thornlie?
On average, residential properties are 193 meters from the nearest transport stop.

Transport Stops Detail

HealthcareHealth Services in Thornlie

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70.2% of residents in Thornlie report no long-term health condition, a healthier profile than 77% of areas nationally. 4.8% need daily assistance with core activities, and 49.8% hold private health cover. The standardised death rate runs at 3.8 per 1,000 residents. Health conditions, assistance needs and insurance are 2021 Census measures; the death rate comes from current ABS releases.

Detail

General health indicators in Thornlie are favorable based on AreaSearch evaluations of chronic illnesses and mortality trends, with younger demographics showing minimal rates of common medical conditions. Private health insurance coverage covers roughly 50% of the population (~12,943 people), lower than the Greater Perth proportion of 59.0% and the Australian figure of 55.7%. Arthritis and mental health conditions are the most prevalent recorded illnesses, affecting 7.3 and 7.1% of the community respectively. Meanwhile, 70.2% of residents reported having no long-term medical conditions, comparable to 71.9% across Greater Perth. Inhabitants aged under 65 show above-average health results.

The community includes 4,792 residents aged 65 and over, making up 18.4% of the population compared to 15.9% across Greater Perth, with senior health indicators rating positively overall despite slightly lower national rankings than younger age groups.

Frequently Asked Questions - Health

How many people in the Thornlie SA2 have private health insurance?
Around 49.8% of people in the Thornlie SA2 are covered by private health insurance, which compares to 59.0% in the broader region of Greater Perth.
What percentage of the population requires ongoing medical assistance in the Thornlie SA2?
In the Thornlie SA2, 4.8% of the population is identified as requiring ongoing medical assistance. This figure is slightly different from the regional average, where 4.6% of people in Greater Perth require similar assistance.
How prevalent is asthma in the Thornlie SA2?
7.0% of people in the Thornlie SA2 are diagnosed with asthma. In comparison, 6.8% of the population across Greater Perth is affected by asthma.
What percentage of people have diabetes in the Thornlie SA2?
Diabetes affects 5.7% of the the Thornlie SA2 population, while in the surrounding region, 4.0% of people are diagnosed with diabetes.
What is the percentage of people with heart disease in the Thornlie SA2?
3.6% of people in the Thornlie SA2 have heart disease. Across the region of Greater Perth, 3.3% of the population is affected by heart disease.
How does the Thornlie SA2 compare to the region in terms of overall private health coverage?
In the Thornlie SA2, 49.8% of the population are estimated to have private health insurance. Comparatively, Greater Perth sees an estimated private health coverage rate of 59.0%.

Ancestry & LanguageCultural Diversity in Thornlie

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43.5% of Thornlie residents were born overseas and 32.2% speak a language other than English at home, more culturally diverse than 82% of areas nationally. The largest reported ancestries are English (24.9%) and Australian (18.8%). Ancestry, language and country of birth are counted only by the Census, so these are 2021 figures.

Detail

Cultural diversity is pronounced in Thornlie, where 43.5% of the community was born overseas and 32.2% speak a non-English language at home. Christianity represents the leading faith at 42.1% of residents. In addition, Islamic affiliation is notably prominent at 12.1%, significantly exceeding the Greater Perth proportion of 3.2%. Regarding ancestral background based on parental birthplaces, the most common lineages are English at 24.9%, Australian at 18.8%, and Other at 17.3%, which is well above the regional share of 11.2%. Variations among other backgrounds include Maori ancestry at 1.2% (compared to 0.9% across the region), Chinese at 7.9% (versus 4.0%), and South Australian at 0.7% (compared to 1.0%).

Frequently Asked Questions - Diversity

What is the level of cultural diversity in the Thornlie SA2?
Thornlie scores quite highly on cultural diversity, with 32.2% of its population speaking a language other than English at home and 43.5% born overseas.
What is the most common religion in the Thornlie SA2?
The main religion in Thornlie was found to be Christianity, which makes up 42.1% of people in Thornlie. However, the most apparent overrepresentation was in Islam, which comprises 12.1% of the population, substantially higher than the Greater Perth average of 3.2%.
What are the top countries of origin in the Thornlie SA2?
In terms of ancestry (country of birth of parents), the top three represented groups in Thornlie are English, comprising 24.9% of the population, Australian, comprising 18.8% of the population, and Other, comprising 17.3% of the population, which is substantially higher than the regional average of 11.2%. Additionally, there are notable divergences in the representation of certain other ethnic groups: Maori is notably overrepresented at 1.2% of Thornlie (vs 0.9% regionally), Chinese at 7.9% (vs 4.0%) and South African at 0.7% (vs 1.0%).
How does the percentage of people born overseas compare to the regional average?
43.5% of the the Thornlie SA2 population was born overseas, compared to 37.7% regionally.
What percentage of the the Thornlie SA2 population speaks a language other than English at home?
32.2% of the population in the Thornlie SA2 speaks a language other than English at home, compared to 22.0% in the wider region.
How many people in the Thornlie SA2 identify as Australian Aboriginal?
1.9% of the the Thornlie SA2 population identifies as Australian Aboriginal, compared to 1.4% in the region.
What is the citizenship status of the population in the Thornlie SA2?
80.3% of the the Thornlie SA2 population holds citizenship, compared to 83.0% in the wider region.

Age StructureAge Profile of Thornlie

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The median resident of Thornlie is 38. 26.1% of residents are aged 15 to 34. Age cohorts are not raw Census counts: the Census split is re-based to the latest ABS population estimates and state projections.

Detail

Age distributions in Thornlie generally track Greater Perth patterns, with the largest variance across broad age groups being 3.4 percentage points. The median age is estimated at 38 as at August 2026, identical to the 2021 Census outcome and 1 year older than Greater Perth's median of 37 at that time. The most notable shift since the Census occurred among the 45 - 64 age group, which fell from 24.7% to an estimated 23.1%. By 2041, older residents aged 65+ are projected to drive growth, expanding by 1,913 people (40%) to reach 6,706, while numbers of children, young adults, and middle-aged adults are anticipated to decrease.

Frequently Asked Questions - Age

What is the median age in the Thornlie SA2?
AreaSearch estimates the median age in the Thornlie SA2 at 38 years as at August 2026. That is in line with the 2021 Census figure of 38 years, on an age profile AreaSearch re-estimates for population change recorded since the Census.
How does the Thornlie SA2's median age compare to broader areas?
At an estimated 38 years as at August 2026, Thornlie is comparable to the Greater Perth 2021 Census average (37 years) and similarly aligned with equal to the national Census average.
What age groups are over-represented in the Thornlie SA2?
On AreaSearch estimates updated to August 2026, the most over-represented age group in the Thornlie SA2 compared to the Greater Perth region is the 65 - 74 group, making up 10.0% of the population.
What age groups are under-represented in the Thornlie SA2?
On AreaSearch estimates updated to August 2026, the most under-represented age group in the Thornlie SA2 compared to the Greater Perth region is the 25 - 34 group, making up 13.3% of the population.
Are there age groups with notable population variances?
No, the age distribution in the Thornlie SA2 is broadly in line with the Greater Perth region.
What is the percentage of children (0-14 years) in the Thornlie SA2?
AreaSearch estimates children aged 0-14 years at 18.1% of the population in the Thornlie SA2 as at August 2026.
What is the percentage of older people (65+ years) in the Thornlie SA2?
AreaSearch estimates people aged 65 and over at 18.4% of the population in the Thornlie SA2 as at August 2026.

Data & MethodBoundaries, Sources & Method for Thornlie

Data currency Refreshed

9 of 14 data sections on this page were updated within the last 12 months — the newest current to Aug 2026.

Everything is aggregated to the SA2 boundary shown above, on a 2021 Census baseline. Only 3 sections — housing, households and cultural diversity — still wait on the 2026 Census.

The ledger — source, cycle and currency by section

Section Source & update cycle Currency
Updated within the last 12 months 9 sections
Population ABS, GNAF, Geoscience Australia Annual (ABS ERP) Aug 2026 last month headline measures · 2021 Census baseline
Re-based to the ABS Estimated Resident Population (June 2025 release) and updated with new dwellings from GNAF address data. Current to Aug 2026, with the 2021 Census supplying the small-area baseline.
Age profile ABS, Geoscience Australia, State governments Annual Aug 2026 last month headline measures · 2021 Census baseline
Age cohorts are re-based to the latest ABS population estimates and state projections, current to Aug 2026. Each cohort is held as a Census baseline and a current estimate.
Development & approvals ABS, GNAF Monthly (ABS approvals) Aug 2026 last month headline measures · Jun 2026 baseline
Property sales & rents Valuer General, Rental Board, ABS Weekly sales, quarterly rents Aug 2026 last month all 21 measures
Sales from the state Valuer General register, refreshed weekly, and rents from quarterly rental bond lodgements. Both are read live each time this page loads, current to Aug 2026.
Infrastructure projects Infrastructure Australia, State agencies, Local governments Daily Jul 2026 2 months ago all 3 projects tracked here
Project pipeline maintained continuously from Infrastructure Australia, state agencies, local government and public announcements. Records are added and revised daily; this area was last updated Jul 2026.
Employment ABS, DEWR, JSA Quarterly (ABS SALM) Mar 2026 6 months ago headline measures · 2021 Census baseline
Unemployment and labour force from ABS Small Area Labour Markets, current to Mar 2026. The growth outlook applies Department of Employment (now Jobs and Skills Australia) forecasts for all 19 industry divisions to the local industry mix, so it measures sector composition rather than local expansion and makes no allowance for population growth. Job demand comes from the same agency via its Internet Vacancy Index; industry and occupation structure from the 2021 Census.
Education ABS, ACARA Annual (ACARA) Aug 2026 last month headline measures · 2021 Census baseline
Transport ABS, State Transport Departments Each timetable release Jul 2026 2 months ago headline measures · 2021 Census baseline
Services & amenities Provider directories, ACECQA Continuous Jul 2026 2 months ago all 14 measures
Annual and financial-year sources 2 sections
Income ABS, ATO Annual (ATO) FY 2023 3 years ago headline measures · 2021 Census baseline
ATO taxable income statistics for FY 2023, indexed forward using the Wage Price Index. Census household income provides the distribution detail.
Health ABS, ATO Annual 2024 2 years ago headline measures · 2021 Census baseline
Census-measured — next update: 2026 Census 3 sections No more current small-area source exists for these, so they are labelled as Census-measured rather than implied to be current.
Housing ABS 5-yearly (Census) 2021 Census next update 2026 all 30 measures
Households ABS 5-yearly (Census) 2021 Census next update 2026 all 18 measures
Cultural diversity ABS, Geoscience Australia 5-yearly (Census) 2021 Census next update 2026 all 44 measures

"Currency" is the most recent release feeding that section. Where the Census supplies the structural baseline underneath a current headline figure, the row says so.

How the numbers are built

Population

The Census provides the small-area baseline, aggregated from mesh blocks to this boundary. It is then re-based to the ABS Estimated Resident Population (June 2025 release), and new dwellings built since Census night are counted from address data — 69 validated new addresses here. The headline figure is therefore a current estimate for Aug 2026, not a 2021 count (23,665 at the 2021 Census → 25,990 now). Annual growth rates are compound (CAGR), not simple averages.

Age profile

Cohort shares are not raw Census counts. Every cohort is held as a pair — the Census baseline and a current estimate — and the split is re-based using ERP and state population projections, current to Aug 2026. Median age is the Census median plus modelled change since. Charts that show both are labelled "2021 Census vs Current Estimate".

Property sales

Sourced from the state valuation authority's sales register — current, not Census, and refreshed weekly. Medians are calculated from settled transactions in the period shown; periods with very low transaction counts are flagged or suppressed, because a handful of sales can move a median substantially.

Rents

Derived from state rental bond lodgement data, by dwelling type and bedroom count. Bonds are lodged at the start of a new tenancy, so this reflects new lettings, not the whole rented stock.

Development & infrastructure

Building approvals come from current ABS releases; development applications are collected from council and state planning portals; the infrastructure pipeline is compiled from Infrastructure Australia and local government sources. Applications are matched to this boundary by address or coordinates, so very recent lodgements may not yet appear.

Employment & income

Industry and occupation structure comes from the Census, but the headline labour-market indicators do not. Unemployment and labour force are derived from ABS Small Area Labour Markets (quarterly). The employment outlook applies Department of Employment forecasts for all 19 industry divisions to this area's own industry mix (the agency is now Jobs and Skills Australia), as does the Internet Vacancy Index used for job demand. Because it is weighted on industry composition alone, that outlook carries no allowance for local population growth — in fast-growing areas the real rise in local jobs will typically be higher. Income combines Census household income with ATO taxable-income statistics for FY 2023, indexed forward using the Wage Price Index.

Education, transport & amenities

School enrolments, ICSEA and performance come from ACARA's current release, not the Census. Public transport stops and service frequency are derived from GTFS timetable feeds published by state transport departments. Services and amenities are proximity and count scores built from provider directories, refreshed on their own cycle. The Census contributes only the travel-to-work and qualification measures.

Rankings and benchmarks. Where we rank this area, the comparison set is every area of the same boundary type — suburbs against suburbs, SA2s against SA2s. Benchmarks compare this area against its greater capital city region and the national figure for the same measure and period.

Limits worth knowing. Small areas carry larger error margins, and the ABS introduces small random adjustments to Census counts to protect confidentiality — so totals may not sum exactly. Estimates re-based from regional data describe the area's expected trajectory, not a direct count of it. Figures are indicative for research and are not financial, planning or valuation advice.

Cross-check us. The Census baseline for this boundary is at ABS 2021 Census QuickStats (506041137). QuickStats reports 2021 only — the figures on this page are more current wherever the ledger shows a later date.

Common questions about this page

Why can the Thornlie SA2 boundary differ from the suburb boundary?
This page uses ABS Statistical Area Level 2 (SA2) boundaries for statistical reporting (e.g., census and ERP). SA2 areas can differ materially from Suburbs and Localities (SAL) boundaries, even when they share similar names, because they are defined for different purposes and often use different geographic boundaries.
Where does the data on this Thornlie page come from?
AreaSearch compiles this page from official and industry sources — including ABS, Geoscience Australia, Valuer General, Provider directories, DEWR, JSA, State Transport Departments and ACARA — then aggregates them to the boundary shown and calculates the rankings, 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.
Is the Thornlie data on this page just from the 2021 Census?
No. Most of this page is maintained well beyond the Census. Sourced entirely from current releases: development & approvals (Aug 2026), property sales & rents (Aug 2026), infrastructure projects (Jul 2026) and services & amenities (Jul 2026). Built on a Census baseline but carrying newer measures on top: population (to Aug 2026), age profile (to Aug 2026), employment (to Mar 2026), income (to FY 2023), education (to Aug 2026), transport (to Jul 2026) and health (to 2024). Population and age cohorts in particular are re-based to the latest ABS Estimated Resident Population rather than left at 2021 counts. Only housing, households and cultural diversity remain wholly Census-based, because no more current small-area dataset exists for those measures.

Nearby Areas