St Clair

SA2

Greater Sydney / St Marys

 
 
 
 
 
 
 
Data Sources ABSValuer GeneralRental BoardACARA Newest Sep 2026 · Refreshed ABS QuickStats 124051470 How we calculate this
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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 St Clair

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The median house price in St Clair is $1.22m, with units at $1.01m. House values have moved 7.5% a year compounded over five years.

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DemographicsPopulation Growth in St Clair

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St Clair has an estimated 20,556 residents, up from 19,942 at the 2021 Census — a change of 614 people, or 3.1%. That puts 2,855 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

Demographic assessments by AreaSearch indicate that St Clair has an estimated population of 20,556 as of Aug 2026. Compared to the 19,942 people recorded in the 2021 Census, this marks an expansion of 614 people (3.1%). These calculations draw upon an ABS estimated resident population figure of 20,529 as of June 2025 alongside 34 validated new addresses recorded post-census. The suburb maintains a population density of 2,855 persons per square kilometer, placing it within the upper quartile among nationally evaluated areas. St Clair's post-census increase of 3.1% sits within 2.3 percentage points of the broader SA3 area (5.4%), highlighting solid growth momentum.

Natural increase served as the core contributor to demographic expansion, accounting for roughly 55.7% of total population additions over recent timeframes. Projections for each SA2 region are drawn from ABS/Geoscience Australia models released in 2024 (utilising 2022 as a base year), supplemented by NSW State Government SA2-level figures from 2022 (with 2021 as a base year) wherever necessary. Age-specific expansion trajectories from these datasets are applied across all locations for the 2032 to 2041 period. Looking at forward demographic patterns, the area is anticipated to record a net reduction of 170 persons by 2041 under these models. In contrast to the overarching contraction, specific cohorts will expand, most notably the 75 to 84 age bracket with a projected increase of 603 people. See the age section for more details.

Frequently Asked Questions - Population

What is the latest population estimate for the St Clair SA2?
Total population for the St Clair SA2 was estimated to be approximately 20,556 as at Aug 26. This is based upon an estimated resident population of 20,529 from the ABS up to June 2025.
How has the population in the St Clair SA2 changed since 2021?
The st clair sa2 has added approximately 614 people and shown a 3.08% increase from the 19,942 people recorded at the 2021 Census period.
What is the population density in the St Clair SA2?
The population density in the St Clair SA2 is estimated at 2,855 persons per square kilometer based on the latest population estimate.
How much has the population grown over the past 10 years in the St Clair SA2?
Over the past 10 years, the population in the St Clair SA2 has shown a compound annual growth rate of 0.0% per annum.
What are the main drivers of population growth in the St Clair SA2?
Population growth in the St Clair SA2 is driven by: Natural increase (55.7%), Overseas migration (44.3%), Interstate migration (0.0%). The primary driver is Natural increase, contributing 55.7% of overall population gains.

Residential SupplyHousing Development & Building Approvals in St Clair

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269 new dwellings have been approved in St Clair over the past five years, an average of 53 a year. That is 2.7 approvals per 1,000 residents. Of the 54 dwellings approved in the latest reporting year, 80% 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 development in St Clair has seen roughly 53 new dwelling approvals per annum, resulting in 269 homes across the last 5 financial years. With an inflow rate of 1 new residents per year per completed dwelling across the preceding 5 financial years (from FY-22 and FY-26), residential delivery matches or surpasses local demand, broadening purchaser options and supporting growth potential beyond existing projections. An average construction cost of $274,000 per dwelling sits beneath regional benchmarks, offering relatively accessible building costs for buyers. Furthermore, commercial approvals have reached $2.3 million this financial year, underscoring a development landscape centred predominantly on residential stock.

On a per-capita basis, residential approvals in St Clair stand at roughly two-thirds of the Greater Sydney rate, placing the suburb in the 44th percentile across Australia; this relative scarcity tends to reinforce demand for established dwellings. The lower building rate reflects both local market maturity and potential land constraints. Free-standing houses account for 80.0% of recent builds while medium and high-density housing represents 20.0%, sustaining the low-density suburban character that appeals to buyers seeking space. This delivery mix contrasts with the existing residential base (which consists of 98.0% houses), signaling shrinking greenfield opportunities alongside shifting lifestyle preferences and an appetite for varied, cost-effective dwelling types. Market maturity is further evidenced by a ratio of approximately 373 people per approval. With population trends remaining flat or trending downward, St Clair is likely to face subdued residential pressure, generating advantageous purchasing conditions.

Frequently Asked Questions - Development

How many dwelling approvals have occurred in the St Clair SA2 recently?
Dwelling approval activity in the the St Clair SA2 area has seen 121 residential approvals over the past two financial years, based on AreaSearch's SA2 aggregation method. The St Clair SA2's current population of 20,556 has been supported by 53 approvals on average over recent years.
How does the St Clair SA2's development activity compare to the broader region?
The St Clair SA2 has seen 0.27 approvals per 100 people in recent years, compared to 0.62 approvals in the broader region. This means that one dwelling has been approved for every 373 people in the St Clair SA2, compared to one for every 165 in the broader region.
Is the St Clair SA2 keeping up with housing demand?
Population forecasts suggest stable or declining population, reducing pressure on housing supply in the the St Clair SA2 area.
What has been the trend in development approvals over the past five years in the St Clair SA2?
Looking at development activity over the past five years, the St Clair SA2's approval levels have been slightly above the yearly average of 53, showing modest growth in recent years.
How does recent development compare to population growth in the St Clair SA2?
Over the past five years, the St Clair SA2 has seen 269 residential approvals while population has remained stable or declined, indicating potential market oversupply.
Are there opportunities for residential developers in the St Clair SA2?
With dwelling approval activity running at an average of 53 approvals per year and a population of 20,556, stable population forecasts suggest a mature market with selective development opportunities.
Approvals Pipeline Development applications near St Clair

Development applications around St Clair

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 St Clair

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AreaSearch tracks 4 current infrastructure and development projects inside St Clair, worth an estimated $2.8 billion. A further 107 sit in the immediately surrounding suburbs, taking the tracked pipeline within reach of the area to $97.5 billion. 34 are already under construction and 57 are due for completion within three years. The pipeline spans transport & logistics, communities, precincts & urban renewal and residential development. 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

Urban development, major works, and strategic planning initiatives play a decisive role in shaping an area's long-term trajectory. AreaSearch has pinpointed a total of 8 projects poised to influence the suburb. Among the most prominent undertakings are the Erskine Park Employment Area (EPEA) Expansion, M12 Motorway, Western Sydney Aerotropolis Infrastructure and Development, and Mamre Road Upgrade - M4 to Erskine Park Road (Stage 1), with priority developments detailed below.

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Frequently Asked Questions - Infrastructure

What are some of the major infrastructure and planning changes likely to influence the St Clair SA2?
Key infrastructure and planning changes likely to influence the St Clair SA2 include: Erskine Park Employment Area (EPEA) Expansion (Construction); M12 Motorway (Construction); Western Sydney Aerotropolis Infrastructure and Development (Construction); Mamre Road Upgrade - M4 to Erskine Park Road (Stage 1) (Construction); and Orchard Hills Switching Substation (Completed). These projects represent significant developments that will shape the area's future infrastructure landscape.
What types of infrastructure projects are impacting the St Clair SA2?
Infrastructure development impacting the St Clair SA2 spans multiple sectors including Transport & Logistics, Business Parks & Technology Hubs, and Residential Development, among others.
What is the scale of infrastructure investment impacting the St Clair SA2?
Infrastructure investment analysis indicates substantial capital deployment exceeding $52.9 billion in projects that will impact the extended area, with a notable concentration of investment within the immediate the St Clair SA2 vicinity.
How does the St Clair SA2's infrastructure development compare to other areas?
With an infrastructure score in the top 40%, the St Clair SA2 demonstrates above-average development activity compared to national benchmarks.
Erskine Park Employment Area Expansion
Category: Business Parks & Technology Hubs
Stage: Construction | Est. Comp: 2030
Source / Links: Link 1   Link 2  

Major Western Sydney industrial and logistics employment area within the Erskine Park / Western Sydney Employment Area precinct. The precinct includes Goodman assets such as Erskine Park Industrial Estate, Westpark Industrial Estate and Interlink Distribution Centre, with modern warehouse, office, distribution and light industrial space close to the M4 and M7 motorways. Most land is established or committed, while remaining activity is focused on leasing, fitout, subdivision and new warehouse facilities, including recent state significant development activity at Interlink Distribution Centre.

Business Parks & Technology Hubs

Mamre Road Upgrade - M4 Motorway to Erskine Park Road (Stage 1)
Category: Transport & Logistics
Stage: Construction | Est. Comp: 2028
Source / Links: Link 1   Link 2  

Stage 1 of the Mamre Road upgrade widens about 3.8 km of Mamre Road between the M4 Motorway at St Clair and Erskine Park Road at Erskine Park to a four-lane divided road with a wide central median, allowing future expansion to six lanes if demand requires. The scope covers upgrades to six intersections (including Banks Drive, Solander Drive, Luddenham Road and Erskine Park Road), two large structural culverts and extensive drainage works to better withstand flooding, a new shared path along the eastern side of the corridor, reinstated bus stops near Banks Drive, permanent noise walls at St Clair, major utility relocations and improved access for Mamre House and the Erskine Park Rural Fire Service.Mamre Road is a critical freight and commuter connection between the M4 Motorway, the Western Sydney Employment Area and the Western Sydney International (Nancy-Bird Walton) Airport precinct, carrying about 20,000 vehicles a day with volumes forecast to double by 2041. Early works began in September 2024 and major construction commenced in October 2024. Delivery contractor Seymour Whyte Constructions holds a contract valued at $150-200 million within the $290 million Stage 1 budget, part of $1 billion in combined Federal and NSW funding across both Mamre Road stages. As at May 2026 construction is well advanced, with traffic switched onto the newly built western carriageway from March 2026 while work continues on the eastern side. Transport for NSW now advises completion in 2028. Stage 2, between Erskine Park Road and Kerrs Road at Kemps Creek, is progressing separately through planning.

Transport & Logistics

Western Sydney Aerotropolis Infrastructure and Development
Category: Communities, Precincts & Urban Renewal
Stage: Construction | Est. Comp: 2030
Source / Links: Link 1   Link 2  

An 11,200-hectare economic and urban transformation precinct on the doorstep of the new Western Sydney International Airport, supported by over $28 billion in combined government investment and rapidly climbing private sector commitments. Anchor developments include Bradfield City Centre, the Advanced Manufacturing Readiness Facility, the toll-free M12 Motorway, and major transport, water, and public open space infrastructure projects targeting over 100,000 long-term jobs.

Communities, Precincts & Urban Renewal

ArkExpress Industrial Development
Category: Business Parks & Technology Hubs
Stage: Approved | Est. Comp: 2025
Source / Links: Link 1   

17 industrial units plus ancillary cafe development approved for corner of Lenore Drive and Erskine Park Road. Units range from 284sqm to 625sqm plus 80sqm cafe. Originally proposed 29 units, reduced to 17 larger units. Ideally located adjacent to Erskine Park link road connecting to M7 motorway.

Business Parks & Technology Hubs

BlueScope Western Sydney Service Centre Expansion
Category: Manufacturing
Stage: Construction | Est. Comp: 2026
Source / Links: Link 1   

BlueScope is investing $415 million to expand its Western Sydney Service Centre in Erskine Park with a new 240,000-tonne-per-annum Metal Coating Line (MCL7). The facility will manufacture pre-painted COLORBOND steel to support growing domestic residential construction demand across eastern Australia. Civil site works and equipment installation commenced following approvals, targeting full commissioning by 2026.

Manufacturing

Distribution Dr, Orchard Hills
Category: Manufacturing
Stage: Proposed | Est. Comp: 0
Source / Links: Link 1   

Plans to expand food manufacturing facility with warehouse area, office space, and 160 additional car parking spaces.

Manufacturing

St Marys Station Upgrade and Metro Integration
Category: Transport & Logistics
Stage: Construction | Est. Comp: 2027
Source / Links: Link 1   Link 2  

A major transport interchange project integrating the existing T1 Western Line with the new Sydney Metro Western Sydney Airport line. Key features include a new underground metro station, a 55-metre-long pedestrian concourse and footbridge via Harris and Hobart Streets, a northern pedestrian plaza, and a multi-storey commuter car park with over 250 additional spaces. The 23-kilometre metro line will connect St Marys to the new Western Sydney International (Nancy-Bird Walton) Airport and Bradfield City Centre, with the metro expected to open in mid-to-late 2027 following delays from the original late 2026 target.A free interim bus service between St Marys and the airport was announced by the NSW Government in January 2026 to bridge the gap. The project is a key commitment under the Western Sydney City Deal and a vital gateway for the Western Parkland City.

Transport & Logistics

Erskine Park Urban Reinvestment Project
Category: Communities, Precincts & Urban Renewal
Stage: Construction | Est. Comp: 2026
Source / Links: Link 1   Link 2  

Penrith City Council is delivering the Erskine Park Urban Reinvestment Project, transforming six underutilised open space sites into 14 residential lots. Civil subdivision works commenced in early 2025. Stormwater works have been completed on initial sites, with water and electrical servicing scheduled from mid-2026. Sale proceeds will fund around $5 million of open space improvements including reserve upgrades, footpaths and implementation of the Chameleon Reserve Masterplan.

Communities, Precincts & Urban Renewal

Jobs & IndustryEmployment Trends in St Clair

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10,912 residents of St Clair are employed, from a labour force of 11,289. Unemployment sits at 3.3%, with participation at 68.4%. Weighted for its industry mix, the area's sectors are forecast to grow about 6.1% nationally over five years. That reflects industry composition only and makes no allowance for local population growth. The working-day population is estimated at 15,975, about 78% 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

St Clair features a capable local labour base, distinguished by a notable concentration in industrial and manufacturing trades and a low unemployment rate of 3.3%. Employed residents numbered 10,912 as of March 2026, while the jobless rate tracking at 0.8% below Greater Sydney's 4.1% highlights local stability, with workforce participation tracking closely to Greater Sydney's 68.9%. Census records show 29.2% of workers operated from home, an outcome potentially shaped by pandemic-era restrictions. The leading employment sectors for local residents are health care & social assistance, construction, and retail trade. A prominent specialization exists within transport, postal & warehousing, capturing a workforce share 1.9 times the broader regional benchmark.

Conversely, professional & technical roles are comparatively limited, employing only 4.3% of St Clair's workers against 11.5% in Greater Sydney. A comparison between the resident workforce and the count of local jobs points to a largely dormitory residential community with limited internal employment generation. Analysis of ABS and SALM figures shows that across the 12-month period, the local workforce contracted by 3.8% and employment dropped by 4.0%, lifting unemployment by 0.2 percentage points. This dynamic diverged from Greater Sydney, which recorded a 1.9% rise in employment, a 1.9% expansion in the labour force, and a slight reduction in joblessness. Broader labour demand patterns can be evaluated via Jobs and Skills Australia forecasts from Mar-26 across five- and ten-year horizons. Across Australia, employment is projected to expand by 6.6% over five years and 13.7% over ten years, though sectoral performance varies widely. Applying these industry trajectories to the local occupational structure indicates prospective employment gains of 6.1% over five years and 12.7% over ten years in St Clair (note that this weighting exercise is illustrative and excludes local demographic modeling).

Frequently Asked Questions - Employment

What is the employment situation in the St Clair SA2?
As of March 2026, the St Clair SA2 has approximately 10,912 employed residents with an unemployment rate of 3.3%. This healthy unemployment rate suggests a well-functioning labour market. Employment indicators are below the national average, suggesting room for improvement, though the very low unemployment rate of 3.3% indicates the ranking primarily reflects recent job losses rather than underlying labor market weakness.
How does the St Clair SA2's unemployment rate compare to the broader region?
As of March 2026, the unemployment rate in the St Clair SA2 stands at 3.3%, which is 0.8 percentage points below Greater Sydney's rate of 4.1%. This lower unemployment rate suggests stronger local employment conditions. For comparison, the national unemployment rate is 4.2%.
What are the major employment sectors in the St Clair SA2?
The employment landscape in the St Clair SA2 is dominated by several key sectors. The largest employers are health care & social assistance (12.6% of employment), construction (12.0%), and retail trade (11.9%). Other significant employers include transport, postal & warehousing and manufacturing.
How has employment changed recently in the St Clair SA2?
Over the past year to March 2026, the St Clair SA2 has experienced a decline in employment, with total jobs decreasing while the labour force decreased. As a result, the unemployment rate has rise. By comparison, Greater Sydney saw employment increased and its unemployment rate dropped.
What is the workforce participation rate in the St Clair SA2?
The workforce participation rate in the St Clair SA2 is 68.4%, 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 Sydney average of 68.9%, showing similar workforce dynamics to the broader region.
Which industries are over-represented in the St Clair SA2's employment market?
The st clair sa2 shows notable specialization in transport, postal & warehousing, which employs 10.0% of the local workforce compared to 5.3% regionally. This concentration suggests the area has developed competitive advantages in this sector. The area also shows above-average employment in 3 other sectors, contributing to a distinctive economic profile.
What are the employment growth prospects for the St Clair SA2?
Based on Jobs and Skills Australia projections applied to the St Clair SA2's industry mix, employment is expected to grow by 6.1% over the next five years and 12.7% 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 St Clair SA2 compare nationally?
The st clair sa2's employment market shows below-average performance in national comparisons. While employment opportunities exist, the area faces more challenges than many other regions. However, the low unemployment rate of 3.3% suggests the ranking is driven by recent job losses rather than structural weakness. Recent job advertisement trends show the broader employment region saw a 5.9% decline, ranking 29.0th out of 37 regions nationally.
What employment opportunities exist for skilled workers in the St Clair SA2?
Skilled workers will find good opportunities in the St Clair SA2, with skilled sectors accounting for 29.6% of employment. Key sectors for skilled workers include health care & social assistance (12.6%), education & training (7.4%), and finance & insurance (4.3%). With projected employment growth of 6.1% over five years, demand for skilled workers is expected to remain strong.

EarningsHousehold Income in St Clair

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Median household income in St Clair is $2,067 a week (about $107,000 a year), with median personal income at $849 a week. ATO records put median taxable income at $60,609 a year against an average of $66,409. 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

According to AreaSearch's evaluation of ATO tax statistics released for financial year 2023, taxpayers in the St Clair SA2 recorded a median income of $60,609 and an average of $66,409. These earnings fall marginally below national standards and compare to Greater Sydney benchmarks of $60,817 (median) and $83,003 (average). Factoring in Wage Price Index growth of 10.32% since financial year 2023, updated earnings equate to roughly $66,864 (median) and $73,262 (average) as of March 2026. The 2021 Census placed personal, family, and household earnings around the 63rd percentile nationally. The $1,500 - 2,999 income bracket encompasses 38.6% of residents (7,934 individuals), mirroring regional patterns where 30.9% earn within this range.

While housing outlays absorb 16.0% of earnings, solid remuneration keeps disposable income at the 69th percentile, with the area sitting in the 4th decile on the SEIFA income scale.

Frequently Asked Questions - Income

What is the median taxable income in the St Clair SA2?
Based on Wage Price Index adjustments to March 2026, the estimated median taxable income in the St Clair SA2 is approximately $66,864. The official ATO data from FY-23 recorded a median of $60,609.
What is the average taxable income in the St Clair SA2?
Based on Wage Price Index adjustments to March 2026, the estimated average taxable income in the St Clair SA2 is approximately $73,262. The official ATO data from FY-23 recorded an average of $66,409.
How does the median taxable income in the St Clair SA2 compare to the region?
Based on Wage Price Index adjustments to March 2026, the estimated median taxable income in the St Clair SA2 is approximately $66,864 compared to $67,093 in Greater Sydney. The official ATO data from FY-23 shows $60,609 and $60,817 respectively.
How does the average taxable income in the St Clair SA2 compare to the region?
Based on Wage Price Index adjustments to March 2026, the estimated average taxable income in the St Clair SA2 is approximately $73,262 compared to $91,569 in Greater Sydney. The official ATO data from FY-23 shows $66,409 and $83,003 respectively.
What are the main income cohorts in the St Clair SA2 according to the 2021 Census?
As per the 2021 Census, the income bracket containing the largest proportion (~38.6% / 7,934 persons) of the St Clair SA2's population is the $1,500 - 2,999 cohort.
How do the main income cohorts in the St Clair SA2 compare to the region?
The largest income cohort in the St Clair SA2 is the $1,500 - 2,999 group, representing about 38.6% of the population. In comparison, Greater Sydney's largest income cohort is the $1,500 - 2,999 group, representing 30.9% of its population, according to the 2021 Census.
What is the median household income in the St Clair SA2 according to the 2021 Census?
The 2021 Census data indicates that the median household income in the St Clair SA2 is $2,067/wk.
What is the median family income in the St Clair SA2 according to the 2021 Census?
According to the 2021 Census, the median family income in the St Clair SA2 is $2,183/wk.
What is the median personal income in the St Clair SA2 according to the 2021 Census?
The 2021 Census shows that the median personal income in the St Clair SA2 is $849/wk.
How does the St Clair SA2's income rank nationally?
AreaSearch's latest postcode level ATO data for FY-23 reveals that income in the St Clair SA2 is just below the national average, with the median assessed at $60,609 while the average income stands at $66,409. This contrasts to Greater Sydney's figures of a median income of $60,817 and an average income of $83,003. Based on Wage Price Index growth of 10.32% since FY-23, current estimates would be approximately $66,864 (median) and $73,262 (average) as of March 2026.
What is the disposable income in the St Clair SA2?
The estimated disposable income in the St Clair SA2 is $7,523 per year according to AreaSearch analysis.
How does the St Clair SA2's disposable income compare to the region?
The st clair sa2's disposable income is $7,523 compared to $7,412 for Greater Sydney, based on AreaSearch analysis.

Housing StockHousing & Dwellings in St Clair

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St Clair had 6,327 occupied dwellings at the 2021 Census, 99% detached houses and 1% apartments. 47% are owned with a mortgage, 22% rented and 31% owned outright. At that Census the median rent was $440 a week and the median mortgage repayment $2,167 a month, a total housing cost higher than 76% of areas nationally. Rent absorbs 21.3% of household income here and mortgage repayments 24.2%. Dwelling stock, tenure and housing costs are 2021 Census measures — the only source that counts dwellings at this boundary size.

Detail

According to the latest Census, the housing inventory in St Clair is overwhelmingly dominated by standalone houses at 98.5%, with apartments, semi-detached properties, and other structures accounting for just 1.4%, differing sharply from the Sydney metro distribution of 55.9% houses and 44.1% other dwellings. Outright home ownership stood at 31.2%, surpassing the metropolitan level, while 47.1% of properties were held under a mortgage and 21.7% were rented. Typical housing expenses showed median monthly mortgage payments of $2,167 and median weekly rent of $440, both lower than Sydney metro figures of $2,427 and $470.

On a nationwide scale, local mortgage servicing costs outpace the Australian median of $1,863, and rental rates remain well above the national level of $375.

Frequently Asked Questions - Housing

What percentage of homes are owned vs rented in the St Clair SA2?
In the St Clair SA2, 31.2% of homes are owned outright, 47.1% are owned with a mortgage, and 21.7% are rented.
What percentage of dwellings in the St Clair SA2 are houses?
According to the latest data, 98.5% of dwellings in the St Clair SA2 are houses.
What percentage of dwellings in the St Clair SA2 are apartments or units?
In the St Clair SA2, 0.5% of dwellings are apartments or units, with an additional 0.9% being semi-detached dwellings.
What is the level of outright home ownership in the St Clair SA2?
Outright home ownership in the St Clair SA2 stands at 31.2%, compared to 28.7% in Greater Sydney.
What is the median monthly mortgage repayment in the St Clair SA2?
The median monthly mortgage repayment in the St Clair SA2 is $2,167, compared to $2,427 in Greater Sydney.
What is the median weekly rent in the St Clair SA2?
The median weekly rent in the St Clair SA2 is $440, compared to $470 in Greater Sydney.
What is the distribution of rental prices in the St Clair SA2?
In the St Clair SA2, 1.2% of rentals are $0-149/week, 12.1% are $150-349/week, 83.7% are $350-649/week, 2.6% are $650-949/week, and 0.4% are $950+/week.
What is the average monthly housing cost in the St Clair SA2?
The aggregate monthly housing cost in the St Clair SA2 is $1,434, which represents the average monthly cost across all housing types.
What percentage of income do residents spend on housing in the St Clair SA2?
In the St Clair SA2, households with mortgages typically spend 24.2% of their income on mortgage repayments, while renters spend 21.3% of their income on rent.
How crowded are homes in the St Clair SA2?
The average persons per bedroom ratio in the St Clair SA2 is 0.8, indicating the level of household density.
How does housing affordability in the St Clair SA2 compare to the region?
Housing affordability in the St Clair SA2 shows mortgage holders spending 24.2% of income on repayments (vs 27.0% regionally), while renters spend 21.3% of income on rent (vs 22.6% regionally).
What types of dwellings are most common in the St Clair SA2?
The dwelling mix in the St Clair SA2 consists of 98.5% detached houses, 0.9% semi-detached dwellings, 0.5% apartments, and 0.0% other dwelling types.
What is the weighted average housing cost based on tenure mix in the St Clair SA2?
Given the tenure profile of the area, the weighted average monthly housing cost is approximately $1,434. This accounts for outright owners paying no housing costs, mortgage holders paying $2,167/month, and renters paying $1,905/month.
How affordable is housing in the St Clair SA2 relative to local incomes?
Housing in St Clair consumes approximately 16.0% of median household income ($8,950 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 St Clair SA2?
Recent development applications in St Clair show attached dwellings contributing 17% of approvals compared to 2% of existing stock, while detached houses represent 83% of applications versus 98% of current dwellings. This suggests increasing densification. Housing density growth is around the national average.

HouseholdsHousehold Composition in St Clair

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St Clair counted 6,327 households at the 2021 Census, averaging 3.0 people each. 43% are couples with children, more than in 86% of areas nationally, against 25% couples without children. 14% of households are people living alone, and families average 1.8 children. Household and family composition is measured only by the Census, so these are 2021 figures.

Detail

Family units constitute the vast majority of local households at 84.1%, consisting of couples with children (43.3%), couples without children (25.1%), and single parent families (14.8%). Non-family living arrangements account for the remaining 15.9%, divided between single-occupant households (14.2%) and group shared dwellings (1.7%). The median household size of 3.0 people exceeds the Greater Sydney benchmark of 2.7.

Frequently Asked Questions - Households

How many households are in the St Clair SA2?
As of the 2021 Census, the St Clair SA2 had 6,327 households. Based on population growth patterns, this has grown by approximately 3.1% to an estimated 6,522 households today.
What is the typical household size?
The median household size in the St Clair SA2 is 3.0 people. This compares to 2.7 in Greater Sydney and reflects the area's household composition mix.
What types of households are most common?
Family households dominate at 84.1% of all households. The remaining households consist of lone person households (14.2%), group households (1.7%), and other household types (0.0%).
How are families structured in the area?
Among the 5,321 family households, 43.3% are couples with children, 25.1% are couples without children at home, and 14.8% are single parent families. This mix shapes local demand for schools, family services, and housing types.
How does the St Clair SA2 compare to regional household patterns?
Compared to Greater Sydney, the St Clair SA2 shows distinct household patterns. Family households are notably over-represented at 84.1% (versus 72.6% regionally). Conversely, lone person households are under-represented at 14.2% compared to the regional 23.2%. This family-oriented profile influences local demand for family homes, schools, and children's services.
What is the average family size?
Families in the St Clair SA2 have an average of 1.8 children, slightly above the Greater Sydney average of 1.5. This influences local demand for child-related services and larger family homes.
What are the marriage patterns in the St Clair SA2?
Marriage patterns reveal 50.1% of the adult population are currently married, while 35.0% have never married. This compares to 48.3% married and 36.4% never married across Greater Sydney.
How significant are single-person households?
Single-person households represent 14.2% of all households in the St Clair SA2, notably lower than the regional average of 23.2%. This affects demand for smaller dwellings and single-person accommodation.
Are shared living arrangements common?
Group households (unrelated people sharing) account for 1.7% of households, well below the Greater Sydney average of 4.2%. This low rate suggests limited student or young professional shared accommodation.
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EducationSchools & Education in St Clair

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17.1% of adults in St Clair hold a university qualification, including 12.7% with a bachelor degree and 3.3% with postgraduate qualifications. A further 27.5% hold a vocational qualification. 6 schools serve the area, with 2,652 enrolment places and an average ICSEA of 981 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

University attainment levels present a notable local disparity, as 17.1% of residents hold higher education degrees compared to 38.0% across Greater Sydney, highlighting potential for future educational advancement. Bachelor degrees represent the primary higher credential at 12.7%, with postgraduate qualifications at 3.3% and graduate diplomas at 1.1%. Vocational and technical pathways are strongly represented, with 37.6% of individuals aged 15+ possessing trade credentials, comprising certificates (27.5%) and advanced diplomas (10.1%). Formal study engagement is substantial, with 29.6% of the local population actively participating in education. Primary school students account for 10.9%, secondary school attendees represent 8.4%, and tertiary students comprise 4.0%.

Frequently Asked Questions - Education

What percentage of people in the St Clair SA2 have university qualifications?
17.1% of people aged 15 and over in the St Clair SA2 have university qualifications, compared to 38.0% in the broader region.
What percentage of people in the St Clair SA2 have no formal qualifications?
45.4% of people aged 15 and over in the St Clair SA2 have no formal qualifications, compared to 34.2% regionally.
How does the St Clair SA2's education level compare to national averages?
The st clair sa2 ranks in the 31th percentile nationally for education based on AreaSearch's analysis of qualification and performance metrics.
What types of qualifications are most common in the St Clair SA2?
The most common qualifications in the St Clair SA2 are: Certificate (27.5%), Bachelor Degree (12.7%), Advanced Diploma (10.1%).
What proportion of the St Clair SA2's population is currently attending educational institutions?
29.6% of the population in the St Clair SA2 is currently engaged in formal education, with 10.9% in primary school, 8.4% in secondary school, 4.0% at university.
What is the ICSEA score for schools in the St Clair SA2?
The average ICSEA (Index of Community Socio-Educational Advantage) score for schools in the St Clair SA2 is 981, indicating below-average socio-educational advantage compared to the national average of 1000.
How many schools are located within the St Clair SA2?
There are 6 schools within the St Clair SA2, with a combined enrollment of approximately 2,652 students.
What types of schools are available in the St Clair SA2?
The st clair sa2 includes 5 primary schools, 1 secondary school.

Schools Detail

AmenitiesServices & Amenities in St Clair

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Getting AroundTransport & Commuting in St Clair

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Public transport in St Clair reaches 102 stops on 33 routes, timetabled for about 1,300 services a week. The typical home sits about 210 m from its nearest stop. Buses carry the largest share of public transport commuters. Households keep an average of 1.8 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

The local transit network in St Clair includes 102 operational transport stops, primarily serving bus connections. Across these stops, 33 dedicated routes run to deliver 1,332 weekly passenger trips. Public transport access is convenient, with residents situated an average distance of 213 meters from their closest boarding point. Given the predominantly suburban residential character, outbound commuting is typical, with private vehicle travel serving as the dominant mode for 91% of trips. Dwellings maintain an average of 1.8 vehicles, surpassing regional averages. In addition, 29.2% of residents were recorded as working from home (2021 Census; may reflect COVID-19 conditions).

Across the entire network, service frequencies average 190 trips per day, translating to roughly 13 weekly trips per individual stop. The accompanying reference map outlines the 100 nearest stops to the geographic center.

Frequently Asked Questions - Transport

How many public transport stops are in St Clair?
There are 102 public transport stops within the St Clair SA2.
How frequent are the transport services in St Clair?
the St Clair SA2 has 1,332 weekly trips across 33 routes, averaging 190 trips per day.
How far are residents from public transport in St Clair?
On average, residential properties are 213 meters from the nearest transport stop.

Transport Stops Detail

HealthcareHealth Services in St Clair

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70.7% of residents in St Clair report no long-term health condition. 5.3% need daily assistance with core activities, and 52.1% hold private health cover. The standardised death rate runs at 3.9 per 1,000 residents. Health conditions, assistance needs and insurance are 2021 Census measures; the death rate comes from current ABS releases.

Detail

Based on AreaSearch assessments of chronic illness and mortality, St Clair exhibits favorable overarching health metrics, characterized by lower chronic condition incidence among the broader population, though older and vulnerable demographics experience rates exceeding national averages. Private health insurance participation stands at roughly 52% of residents (~10,709 people), which trails typical SA2 figures as well as the Greater Sydney average of 59.9%. Asthma and arthritis represent the most prevalent chronic conditions in the locality, recorded among 8.0 and 7.4% of residents, respectively, while 70.7% reported no long-term medical conditions compared to 74.6% across Greater Sydney.

Health indicators across the working-age cohort remain standard. Older adults aged 65 and over comprise 16.3% of the community (3,344 people), and while health outcomes within this senior bracket present specific challenges, they rank below the broader community's relative national position.

Frequently Asked Questions - Health

How many people in the St Clair SA2 have private health insurance?
Around 52.1% of people in the St Clair SA2 are covered by private health insurance, which compares to 59.9% in the broader region of Greater Sydney.
What percentage of the population requires ongoing medical assistance in the St Clair SA2?
In the St Clair SA2, 5.3% of the population is identified as requiring ongoing medical assistance. This figure is slightly different from the regional average, where 5.2% of people in Greater Sydney require similar assistance.
How prevalent is asthma in the St Clair SA2?
8.0% of people in the St Clair SA2 are diagnosed with asthma. In comparison, 6.4% of the population across Greater Sydney is affected by asthma.
What percentage of people have diabetes in the St Clair SA2?
Diabetes affects 6.1% of the the St Clair SA2 population, while in the surrounding region, 4.3% of people are diagnosed with diabetes.
What is the percentage of people with heart disease in the St Clair SA2?
3.2% of people in the St Clair SA2 have heart disease. Across the region of Greater Sydney, 3.2% of the population is affected by heart disease.
How does the St Clair SA2 compare to the region in terms of overall private health coverage?
In the St Clair SA2, 52.1% of the population are estimated to have private health insurance. Comparatively, Greater Sydney sees an estimated private health coverage rate of 59.9%.

Ancestry & LanguageCultural Diversity in St Clair

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28.3% of St Clair residents were born overseas and 25.6% speak a language other than English at home. The largest reported ancestries are Australian (23.2%) and English (20.4%). Ancestry, language and country of birth are counted only by the Census, so these are 2021 figures.

Detail

St Clair displays a high degree of cultural diversity relative to most Australian suburbs, with 28.3% of its residents born abroad and 25.6% speaking a non-English language at home. Christianity stands as the predominant faith, practiced by 63.6% of the population compared to 49.2% across Greater Sydney. Looking at parental lineage, the leading reported ancestries in St Clair are Australian at 23.2% (exceeding the regional benchmark of 17.8%), English at 20.4%, and Other at 13.8%. Distinct concentrations of specific ethnic backgrounds are also evident, including Filipino residents at 4.2% (compared to 2.0% regionally), Maltese at 3.2% (versus 1.0%), and Samoan at 1.8% (against 0.5%).

Frequently Asked Questions - Diversity

What is the level of cultural diversity in the St Clair SA2?
St Clair was found to be more culturally diverse than the vast majority of local markets, with 28.3% of its population born overseas and 25.6% speaking a language other than English at home.
What is the most common religion in the St Clair SA2?
The main religion in St Clair was found to be Christianity, which makes up 63.6% of people in St Clair. This compares to 49.2% across Greater Sydney.
What are the top countries of origin in the St Clair SA2?
In terms of ancestry (country of birth of parents), the top three represented groups in St Clair are Australian, comprising 23.2% of the population, which is substantially higher than the regional average of 17.8%, English, comprising 20.4% of the population, and Other, comprising 13.8% of the population. Additionally, there are notable divergences in the representation of certain other ethnic groups: Maltese is notably overrepresented at 3.2% of St Clair (vs 1.0% regionally), Samoan at 1.8% (vs 0.5%) and Filipino at 4.2% (vs 2.0%).
How does the percentage of people born overseas compare to the regional average?
28.3% of the the St Clair SA2 population was born overseas, compared to 40.5% regionally.
What percentage of the the St Clair SA2 population speaks a language other than English at home?
25.6% of the population in the St Clair SA2 speaks a language other than English at home, compared to 39.5% in the wider region.
How many people in the St Clair SA2 identify as Australian Aboriginal?
2.7% of the the St Clair SA2 population identifies as Australian Aboriginal, compared to 1.3% in the region.
What is the citizenship status of the population in the St Clair SA2?
88.1% of the the St Clair SA2 population holds citizenship, compared to 80.8% in the wider region.

Age StructureAge Profile of St Clair

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The median resident of St Clair is 36. 27.0% 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

St Clair retains a comparatively youthful demographic profile. As of August 2026, AreaSearch estimates indicate that children and young adults (0 - 24) account for 33.5% of the population versus 30.4% regionally, while young to middle aged adults (25 - 44) comprise 27.3% compared to 31.4% across Greater Sydney. The median age is an estimated 36 as at August 2026, remaining unchanged from the 2021 Census and sitting 1 year below the Greater Sydney median of 37 recorded at that Census. Senior cohorts (65+) have expanded from 12.8% at Census time to an estimated 16.3%.

Concurrently, the 55 to 64 group declined from 13.6% to an estimated 11.1%, while the 65 to 74 demographic rose from 9.3% to 10.8%, demonstrating an ageing resident population without incoming younger replacements. Projections through 2041 anticipate the retiree and elderly segment will experience the most substantial expansion, growing by 751 residents (22%) to 4,095, while cohorts of children, young adults, and young-to-middle-aged adults are forecasted to decline.

Frequently Asked Questions - Age

What is the median age in the St Clair SA2?
AreaSearch estimates the median age in the St Clair SA2 at 36 years as at August 2026. That is in line with the 2021 Census figure of 36 years, on an age profile AreaSearch re-estimates for population change recorded since the Census.
How does the St Clair SA2's median age compare to broader areas?
At an estimated 36 years as at August 2026, St Clair is comparable to the Greater Sydney 2021 Census average (37 years) and 2 years younger than the national Census average (38 years).
What age groups are over-represented in the St Clair SA2?
On AreaSearch estimates updated to August 2026, the most over-represented age group in the St Clair SA2 compared to the Greater Sydney region is the 65 - 74 group, making up 10.8% of the population.
What age groups are under-represented in the St Clair SA2?
On AreaSearch estimates updated to August 2026, the most under-represented age group in the St Clair SA2 compared to the Greater Sydney region is the 25 - 34 group, making up 13.1% of the population.
Are there age groups with notable population variances?
Yes, certain age groups in the St Clair SA2 show significant variance compared to the Greater Sydney region. The most under-represented age group is 85+ year-olds (1.1% vs 2.1%).
What is the percentage of children (0-14 years) in the St Clair SA2?
AreaSearch estimates children aged 0-14 years at 19.6% of the population in the St Clair SA2 as at August 2026.
What is the percentage of older people (65+ years) in the St Clair SA2?
AreaSearch estimates people aged 65 and over at 16.3% of the population in the St Clair SA2 as at August 2026.

Data & MethodBoundaries, Sources & Method for St Clair

Data currency Refreshed

9 of 14 data sections on this page were updated within the last 12 months — the newest current to Sep 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 · Jul 2026 baseline
Property sales & rents Valuer General, Rental Board, ABS Weekly sales, quarterly rents Sep 2026 this 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 Sep 2026.
Infrastructure projects Infrastructure Australia, State agencies, Local governments Daily Jul 2026 2 months ago all 4 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 — 34 validated new addresses here. The headline figure is therefore a current estimate for Aug 2026, not a 2021 count (19,942 at the 2021 Census → 20,556 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 (124051470). 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 St Clair 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 St Clair 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 St Clair 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 (Sep 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.

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