St Marys (NSW)

Suburb (SAL)

Greater Sydney / St Marys

 
 
 
 
 
 
 
Data Sources ABSValuer GeneralRental BoardACARA Newest Aug 2026 · Refreshed ABS QuickStats SAL13658 How we calculate this
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Suburb (SAL) Boundary Analysis

This analysis uses Suburbs and Localities (SAL) boundaries, which can materially differ from Statistical Areas (SA2) even when sharing the same name.

SAL boundaries are defined by Australia Post and the Australian Bureau of Statistics to represent commonly-known suburb names used in postal addresses.

Statistical Areas (SA2) are designed for census data collection and may combine multiple suburbs or use different geographic boundaries. For comprehensive analysis, consider reviewing both boundary types if available.

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Sales ActivityProperty Sales Trends in St Marys (NSW)

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The median house price in St Marys (NSW) is $1.21m, with units at $736k. House values have moved 7.7% a year compounded over five years.

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DemographicsPopulation Growth in St Marys (NSW)

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St Marys (NSW) has an estimated 14,944 residents, up from 13,256 at the 2021 Census — a change of 1,688 people, or 12.7%. Growth has averaged 2.0% a year over five years, faster than 79% of areas nationally. 403 new addresses have been validated here since Census night. Overseas migration accounts for 67.0% of that increase. That puts 1,534 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 analysis of ABS population updates for the wider region, along with new addresses validated by AreaSearch since the Census, the population of the suburb of St Marys (NSW) is estimated to be approximately 14,944 as of May 2026. This represents a growth of 1,688 people (12.7%) from the 2021 Census, which recorded a population of 13,256 residents. The shift is calculated from a resident population of 14,857, which AreaSearch estimated using the latest ABS ERP data release (June 2025) and an additional 403 validated new addresses since the Census date.

This population level translates to a density of 1,534 persons per square kilometer, exceeding the average across national locations evaluated by AreaSearch. The 12.7% expansion in the suburb of St Marys (NSW) since the 2021 census outpaced both the SA3 area (5.4%) and the SA4 region, establishing it as a local growth leader. Overseas migration was the primary driver of this demographic growth, contributing approximately 67.0% of the total population gains in recent times. AreaSearch implements ABS/Geoscience Australia projections for each SA2 area, which were published in 2024 using 2022 as the baseline. For any SA2 regions lacking this information, AreaSearch uses the NSW State Government's SA2 level projections, released in 2022 using 2021 as the baseline. Growth rates by age group from these combined sources are also applied to all areas for the years 2032 to 2041. In terms of future demographic trends, a substantial rise in population is projected, placing the area in the top quartile of national locations, with the suburb of St Marys (NSW) expected to grow by 3,226 persons to 2041 based on compiled SA2-level projections, representing a total gain of 21.0% over the 16 years.

Frequently Asked Questions - Population

What is the latest population estimate for the suburb of St Marys?
Total population for the suburb of St Marys was estimated to be approximately 14,944 as at May 26. This is based upon an estimated resident population of 14,857 from the ABS up to June 2025.
How has the population in the suburb of St Marys changed since 2021?
The suburb of st marys has added approximately 1,688 people and shown a 12.73% increase from the 13,256 people recorded at the 2021 Census period.
What is the population density in the suburb of St Marys?
The population density in the suburb of St Marys is estimated at 1,534 persons per square kilometer based on the latest population estimate.
How much has the population grown over the past 10 years in the suburb of St Marys?
Over the past 10 years, the population in the suburb of St Marys has shown a compound annual growth rate of 1.9% per annum.
What are the main drivers of population growth in the suburb of St Marys?
Population growth in the suburb of St Marys is driven by: Overseas migration (67.0%), Natural increase (33.0%), Interstate migration (0.0%). The primary driver is Overseas migration, contributing 67.0% of overall population gains.

Residential SupplyHousing Development & Building Approvals in St Marys (NSW)

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636 new dwellings have been approved in St Marys (NSW) over the past five years, an average of 127 a year. That places the area in the 83rd percentile for residential development activity nationally, about 8 approvals per 1,000 residents a year. Of the 122 dwellings approved in the latest reporting year, 30% were detached houses and the rest townhouses or apartments. Approvals are currently running at an annualised 99, broadly in line with that longer-run average. Figures come from ABS building approvals aggregated to this Suburb (SAL) boundary and are updated monthly as the ABS releases them.

Detail

An analysis of ABS building approvals by AreaSearch, distributed from statistical area data, indicates that St Marys has recorded an average of approximately 127 new dwelling approvals each year, summing to an estimated 636 homes over the last 5 financial years. Thus far in FY-26, 91 approvals have been registered. An average of 2.2 people per year relocated to the area per new home built during the 5 financial years between FY-21 and FY-25, pointing to healthy demand that supports property values, with new residential projects carrying an average construction cost of $350,000.

Furthermore, $59.6 million in commercial development approvals have been logged in the current financial year, demonstrating strong commercial growth momentum. Compared to Greater Sydney, St Marys records 97.0% more building activity per person, offering a wider selection for buyers, although construction rates have declined in recent years. Recent building approvals consist of 30.0% standalone houses and 70.0% townhouses or apartments. This movement toward denser living options provides affordable entry points and attracts downsizers, investors, and first-time buyers. This marks a clear departure from the current housing mix (presently 51.0% houses), indicating a dwindling supply of developable land, shifting lifestyle preferences, and the demand for more varied, affordable housing. With approximately 182 people per residential approval, St Marys exhibits the hallmarks of a developing area. Looking forward, St Marys is projected to add 3,139 residents by 2041, starting from the most recent AreaSearch quarterly estimate. Current construction levels appear to match future demands, supporting balanced market conditions without major upward pressure on prices.

Frequently Asked Questions - Development

How many dwelling approvals have occurred in the suburb of St Marys recently?
Dwelling approval activity in the the suburb of St Marys area has seen 162 residential approvals over the past two financial years, based on AreaSearch's SA2 aggregation method. The suburb of St Marys's current population of 14,944 has been supported by 127 approvals on average over recent years.
How does the suburb of St Marys's development activity compare to the broader region?
The suburb of St Marys has seen 0.92 approvals per 100 people in recent years, compared to 0.65 approvals in the broader region. This means that one dwelling has been approved for every 182 people in the suburb of St Marys, compared to one for every 190 in the broader region.
Is the suburb of St Marys keeping up with housing demand?
With the population expected to increase by 3,139 people by 2041, around 1,570 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 suburb of St Marys?
Looking at development activity over the past five years, the suburb of St Marys's approval levels have been significantly below the yearly average of 127, showing a notable downturn in recent development.
How many dwellings will be needed to accommodate future population growth in the suburb of St Marys?
The population in the suburb of St Marys is expected to grow by 3,139 people by 2041, necessitating approximately 1,570 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 suburb of St Marys?
Over the past five years, the population in the suburb of St Marys has grown by approximately 4,783 people, while 636 residential approvals were recorded. This equates to a ratio of 7.5 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 suburb of St Marys?
With dwelling approval activity running at an average of 127 approvals per year and a population of 14,944, 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 3,139 people by 2041, around 1,570 new dwellings will be necessary. Current approval trends may be insufficient to meet forecast demand, indicating strong development opportunities.
Approvals Pipeline Development applications near St Marys (NSW)

Development applications around St Marys (NSW)

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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 Marys (NSW)

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AreaSearch tracks 12 current infrastructure and development projects inside St Marys (NSW), worth an estimated $41.8 billion. A further 48 sit in the immediately surrounding suburbs, taking the tracked pipeline within reach of the area to $71.3 billion. 17 are already under construction and 22 are due for completion within three years. The pipeline spans residential development, communities, precincts & urban renewal and transport & logistics. 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

An area's performance is heavily guided by changes in local infrastructure, major developments, and urban planning schemes. AreaSearch has identified a total of 32 projects that are expected to influence the local area. Critical initiatives include the Western Sydney Aerotropolis Infrastructure and Development, the St Marys Station Upgrade and Metro Integration, the Luddenham Metro Station and Sydney Science Park, and the M12 Motorway, with the list below highlighting those of greatest significance.

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Frequently Asked Questions - Infrastructure

What are some of the major infrastructure and planning changes likely to influence the suburb of St Marys?
Key infrastructure and planning changes likely to influence the suburb of St Marys include: Western Sydney Aerotropolis Infrastructure and Development (Construction); St Marys Station Upgrade and Metro Integration (Construction); Luddenham Metro Station and Sydney Science Park (Construction); M12 Motorway (Construction); and St Marys Central Park (Under Assessment). These projects represent significant developments that will shape the area's future infrastructure landscape.
What types of infrastructure projects are impacting the suburb of St Marys?
Infrastructure development impacting the suburb of St Marys spans multiple sectors including Transport & Logistics, Residential Development, and Communities, Precincts & Urban Renewal, among others.
What is the scale of infrastructure investment impacting the suburb of St Marys?
Infrastructure investment analysis indicates substantial capital deployment exceeding $33.7 billion in projects that will impact the extended area, with a notable concentration of investment within the immediate the suburb of St Marys vicinity.
How does the suburb of St Marys's infrastructure development compare to other areas?
The suburb of St Marys ranks in the top 10% nationally for infrastructure development, reflecting exceptional investment activity compared to similar areas across the country.
Western Sydney Aerotropolis Infrastructure and Development
Category: 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 (Nancy-Bird Walton) Airport. The Aerotropolis is being delivered through a coordinated $28 billion-plus government investment by the NSW and Australian Governments in enabling infrastructure, alongside private sector proposals which had grown to around $33 billion by December 2025 and continue to climb. Anchor projects include Bradfield City Centre (114 hectares with 10,000 future homes and 20,000 jobs), the Advanced Manufacturing Readiness Facility (AMRF), the toll-free M12 Motorway which opened on 14 March 2026, the Sydney Metro Western Sydney Airport line (now expected to open mid-to-late 2027 with a free interim bus service from 5 July 2026), and major upgrades to Mamre Road, Elizabeth Drive and Fifteenth Avenue.Sydney Water is delivering the Upper South Creek Advanced Water Recycling Centre and progressing the Aerotropolis Integrated Stormwater Schemes for the Wianamatta Badgerys, Cosgroves and Duncans Mulgoa catchments, with finalisation in early 2026 and Development Servicing Plan exhibition in Q2 2026. Bradfield Central Park construction is due to begin in the second half of 2026, with FDC Construction & Fitout appointed as head contractor in early 2026. The precinct is targeting more than 100,000 long-term jobs across advanced manufacturing, freight and logistics, aerospace and defence, agribusiness, healthcare, education and research.

Precincts & Urban Renewal

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

Sydney Metro - Western Sydney Airport
Category: Transport & Logistics
Stage: Construction | Est. Comp: 2027
Source / Links: Link 1   Link 2  

A 23-kilometre driverless metro railway connecting St Marys to the new Western Sydney International (Nancy-Bird Walton) Airport and Bradfield City Centre via twin tunnels and elevated viaducts. The line includes six new stations: St Marys (interchange with the T1 Western Line), Orchard Hills, Luddenham, Airport Business Park, Airport Terminal, and Bradfield. As of early 2026 the project is in advanced construction, with platform installation complete at Bradfield Station and progressing at Airport Business Park and Orchard Hills.Track laying is underway between Luddenham and St Marys, with more than 6,400 tonnes of Australian-made rail steel to be installed across the alignment by mid-2026. The Stations, Systems, Trains, Operations and Maintenance package is being delivered by the Parklife Metro consortium, which will operate and maintain the line for 15 years. Twelve three-car Siemens Inspiro driverless trains will run on the line. Passenger services were originally targeted for late 2026 to coincide with the airport opening on 26 October 2026, however government and contractor advice now indicates the line will open in mid-to-late 2027 (with April 2027 the earliest date publicly reported). A free interim WSI Link bus service between St Marys and the airport is running until the metro opens. The project is supporting more than 14,000 jobs during construction.

Transport & Logistics

St Marys Central Park
Category: Sports & Recreation
Stage: Construction | Est. Comp: 2028
Source / Links: Link 1   Link 2  

St Marys Central Park is a new civic park forming the green heart of the St Marys Town Centre renewal. Construction commenced in July 2026 following contractor appointment and early remediation works. The project includes a fenced childrens playspace with water play, entertainment space, event lawn, gardens, water features, pathways, seating, toilets and improved pedestrian connections between Queen Street, Coachmans Park and surrounding retail precincts.

Sports & Recreation

St Marys Town Centre Master Plan
Category: Communities, Precincts & Urban Renewal
Stage: Approved | Est. Comp: 2041
Source / Links: Link 1   Link 2  

A 20-year strategic framework for the renewal of St Marys Town Centre, formally endorsed by Penrith City Council on 3 March 2025. New planning controls came into effect on 6 February 2026 via the State Environmental Planning Policy Amendment (St Marys Town Centre) 2026 and amendments to the Penrith Local Environmental Plan 2010, followed by amendments to Chapter E15 of the Penrith Development Control Plan 2014 on 11 February 2026. The Master Plan facilitates around 9,307 new dwellings and 8,360 new jobs by 2041, with the population projected to grow from 3,500 to 25,500.It leverages the new Sydney Metro - Western Sydney Airport station and includes the multi-million-dollar St Marys Central Park (amalgamating Coachmans and Kokoda Parks), a new civic precinct with library and community hub, upgraded active transport links, public domain improvements, stormwater works and a 24-hour commercial core. A Section 7.12 Development Contributions Plan with a 4 percent levy will fund over 235 million dollars of supporting local infrastructure.

Communities, Precincts & Urban Renewal

Luddenham Metro Station and Sydney Science Park
Category: Transport & Logistics
Stage: Construction | Est. Comp: 2026
Source / Links: Link 1   Link 2  

Luddenham Metro Station is a key elevated station on the 23-kilometre Sydney Metro Western Sydney Airport line. As of May 2026, construction is in an advanced stage with fa‡ade works, station precinct landscaping, and installation of lighting and mechanical systems underway. The station serves as the primary transport link for the adjacent Sydney Science Park, a 280-hectare $2 billion mixed-use innovation hub by Celestino. The Science Park is designed as a premier destination for research and development in food, energy, and health, integrating thousands of future homes with commercial and educational facilities.

Transport & Logistics

9-25 Queen Street Mixed Use Development
Category: Communities, Precincts & Urban Renewal
Stage: Under Assessment | Est. Comp: 0
Source / Links: Link 1   Link 2  

Proposed 10-storey mixed-use development including demolition of existing structures, 4 levels of basement parking, 3 levels of commercial floor space totaling approximately 3,034sqm, and 42 residential apartments (mix of 1, 2, and 3 bedrooms). The development application DA24/0185 was refused by Penrith Local Planning Panel in May 2025 due to non-compliance with planning controls and strategic intentions for the St Marys Town Centre. Currently under appeal in the NSW Land and Environment Court with ongoing court proceedings.

Communities, Precincts & Urban Renewal

Mulgoa Road Upgrade Stage 2
Category: Transport & Logistics
Stage: Construction | Est. Comp: 2028
Source / Links: Link 1   Link 2  

The NSW and Australian governments are delivering the Mulgoa Road Upgrade Stage 2 between Glenmore Parkway and Jeanette Street. The project widens the corridor to improve capacity, safety and travel reliability, replaces the Glenmore Parkway roundabout with traffic signals, upgrades intersections, provides bus priority and improves pedestrian and cycling links with shared paths. Major construction is underway and completion is expected in late 2028.

Transport & Logistics

Jobs & IndustryEmployment Trends in St Marys (NSW)

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6,788 residents of St Marys (NSW) are employed, from a labour force of 7,452. Unemployment sits at 8.9%, with participation at 62.8%. Weighted for its industry mix, the area's sectors are forecast to grow about 6.3% nationally over five years. That reflects industry composition only and makes no allowance for local population growth, so in an area growing as fast as this one it understates the likely rise in local jobs. 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 Marys features a skilled labour force with a strong presence in manufacturing and industrial sectors, alongside an unemployment rate of 8.9%, according to AreaSearch aggregations of statistical area data. As of March 2026, 6,788 residents are employed, while the local unemployment rate sits 4.8% higher than the Greater Sydney rate of 4.1%, highlighting potential for economic improvement, and workforce participation remains low at 62.8% compared to 69.1% across Greater Sydney. Census records indicate that a moderate 24.2% of workers performed their duties from home, though the influence of Covid-19 lockdowns should be taken into account.

The primary employment sectors for local workers are health care & social assistance, retail trade, and transport, postal & warehousing. The local area displays a particularly strong concentration in transport, postal & warehousing, with employment rates 2.1 times higher than the regional average. Conversely, the professional & technical sector has a minor footprint, accounting for 4.0% of local jobs compared to 11.5% regionally. A ratio of 0.6 workers for every resident at the time of the Census points to a higher than average availability of local jobs. Based on AreaSearch analysis of SALM and ABS data compiled from wider statistical zones, the labour force shrank by 3.2% and employment fell by 2.8% over the 12 months leading to March 2026, resulting in a 0.4 percentage point drop in the unemployment rate. This stands in contrast to Greater Sydney, which saw employment rise by 1.9%, the workforce expand by 1.9%, and unemployment decrease slightly. National employment forecasts from Jobs and Skills Australia published in May-25 provide additional context on prospective future demand in St Marys. These projections, spanning five and ten-year horizons, have been matched against the local job profile to estimate expansion trends. While nationwide employment is predicted to grow by 6.6% over five years and 13.7% over ten years, growth rates vary widely by industry. Applying these sector-specific forecasts to the employment mix in St Marys indicates that local jobs should grow by 6.3% over five years and 13.1% over ten years (note that this is a basic weighted extrapolation for demonstration purposes and does not incorporate localized population forecasts).

Frequently Asked Questions - Employment

What is the employment situation in the suburb of St Marys?
As of March 2026, the suburb of St Marys has approximately 6,788 employed residents with an unemployment rate of 8.9%. The elevated unemployment rate suggests challenging labour market conditions. The area faces employment challenges compared to other regions nationally.
How does the suburb of St Marys's unemployment rate compare to the broader region?
As of March 2026, the unemployment rate in the suburb of St Marys stands at 8.9%, which is 4.8 percentage points above Greater Sydney's rate of 4.1%. 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 suburb of St Marys?
The employment landscape in the suburb of St Marys is dominated by several key sectors. The largest employers are health care & social assistance (15.9% of employment), retail trade (10.9%), and transport, postal & warehousing (10.9%). Other significant employers include construction and manufacturing.
How has employment changed recently in the suburb of St Marys?
Over the past year to March 2026, the suburb of St Marys has experienced a decline in employment, with total jobs decreasing while the labour force decreased. As a result, the unemployment rate has fall. By comparison, Greater Sydney saw employment increased and its unemployment rate dropped.
What is the workforce participation rate in the suburb of St Marys?
The workforce participation rate in the suburb of St Marys is 62.8%, 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 69.1%, suggesting potential for increased workforce participation.
Which industries are over-represented in the suburb of St Marys's employment market?
The suburb of st marys shows notable specialization in transport, postal & warehousing, which employs 10.9% of the local workforce compared to 5.3% regionally. With a local vs regional employment ratio of 2.1, this represents a significant industry cluster that likely serves markets beyond the local area. The area also shows above-average employment in 2 other sectors, contributing to a distinctive economic profile.
What are the employment growth prospects for the suburb of St Marys?
Based on Jobs and Skills Australia projections applied to the suburb of St Marys's industry mix, employment is expected to grow by 6.3% over the next five years and 13.1% 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 suburb of St Marys compare nationally?
The suburb of st marys's employment market shows weaker performance compared to most areas nationally. This suggests the need for targeted economic development initiatives. 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 suburb of St Marys?
Skilled workers will find good opportunities in the suburb of St Marys, with skilled sectors accounting for 31.5% of employment. Key sectors for skilled workers include health care & social assistance (15.9%), education & training (6.4%), and finance & insurance (4.2%). With projected employment growth of 6.3% over five years, demand for skilled workers is expected to remain strong.

EarningsHousehold Income in St Marys (NSW)

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Median household income in St Marys (NSW) is $1,437 a week (about $75,000 a year), with median personal income at $754 a week. ATO records put median taxable income at $54,753 a year against an average of $59,271. 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 the latest ATO statistics compiled by AreaSearch for financial year 2023, the income level in St Marys is below the national average. The median income for local taxpayers is $54,753, while the average income is $59,271, compared to Greater Sydney figures of $60,817 and $83,003 respectively. Adjusting for a Wage Price Index increase of 10.32% since financial year 2023, current estimates stand at approximately $60,404 for the median and $65,388 for the average as of March 2026. The 2021 Census reveals that household, family, and personal incomes in St Marys are modest, ranking between the 31st and 39th percentiles.

The largest income bracket contains 35.4% of residents (5,290 people) in the $1,500 - 2,999 range, which aligns with broader regional patterns where 30.9% fall into the same bracket. Housing costs present a heavy burden, with only 78.1% of income remaining after housing costs, placing the area in the 23rd percentile.

Frequently Asked Questions - Income

What is the median taxable income in the suburb of St Marys?
Based on Wage Price Index adjustments to March 2026, the estimated median taxable income in the suburb of St Marys is approximately $60,404. The official ATO data from FY-23 recorded a median of $54,753.
What is the average taxable income in the suburb of St Marys?
Based on Wage Price Index adjustments to March 2026, the estimated average taxable income in the suburb of St Marys is approximately $65,388. The official ATO data from FY-23 recorded an average of $59,271.
How does the median taxable income in the suburb of St Marys compare to the region?
Based on Wage Price Index adjustments to March 2026, the estimated median taxable income in the suburb of St Marys is approximately $60,404 compared to $67,093 in Greater Sydney. The official ATO data from FY-23 shows $54,753 and $60,817 respectively.
How does the average taxable income in the suburb of St Marys compare to the region?
Based on Wage Price Index adjustments to March 2026, the estimated average taxable income in the suburb of St Marys is approximately $65,388 compared to $91,569 in Greater Sydney. The official ATO data from FY-23 shows $59,271 and $83,003 respectively.
What are the main income cohorts in the suburb of St Marys according to the 2021 Census?
As per the 2021 Census, the income bracket containing the largest proportion (~35.4% / 5,290 persons) of the suburb of St Marys's population is the $1,500 - 2,999 cohort.
How do the main income cohorts in the suburb of St Marys compare to the region?
The largest income cohort in the suburb of St Marys is the $1,500 - 2,999 group, representing about 35.4% 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 suburb of St Marys according to the 2021 Census?
The 2021 Census data indicates that the median household income in the suburb of St Marys is $1,437/wk.
What is the median family income in the suburb of St Marys according to the 2021 Census?
According to the 2021 Census, the median family income in the suburb of St Marys is $1,747/wk.
What is the median personal income in the suburb of St Marys according to the 2021 Census?
The 2021 Census shows that the median personal income in the suburb of St Marys is $754/wk.
How does the suburb of St Marys's income rank nationally?
The suburb of St Marys shows a median taxpayer income of $54,753 and an average of $59,271 according to the latest postcode level ATO data aggregated by AreaSearch for FY-23. This is below the national average, contrasting with Greater Sydney's median income of $60,817 and average income of $83,003. Based on Wage Price Index growth of 10.32% since FY-23, current estimates would be approximately $60,404 (median) and $65,388 (average) as of March 2026.
What is the disposable income in the suburb of St Marys?
The estimated disposable income in the suburb of St Marys is $4,864 per year according to AreaSearch analysis.
How does the suburb of St Marys's disposable income compare to the region?
The suburb of st marys's disposable income is $4,864 compared to $7,412 for Greater Sydney, based on AreaSearch analysis.

Housing StockHousing & Dwellings in St Marys (NSW)

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St Marys (NSW) had 4,771 occupied dwellings at the 2021 Census, 51% detached houses and 19% apartments. 27% are owned with a mortgage, 54% rented and 18% owned outright. At that Census the median rent was $365 a week and the median mortgage repayment $1,847 a month. Rent absorbs 25.4% of household income here and mortgage repayments 29.7%. Dwelling stock, tenure and housing costs are 2021 Census measures — the only source that counts dwellings at this boundary size.

Detail

The mix of housing in St Marys at the time of the last Census consisted of 51.3% standalone houses and 48.7% other dwelling types (such as semi-detached homes, apartments, and alternative housing), compared to Sydney metro's split of 55.9% houses and 44.1% other dwellings. Furthermore, home ownership in St Marys was lower than the Sydney metro average, standing at 18.4%, while the remaining homes were occupied by buyers with a mortgage (27.4%) or tenants renting their homes (54.2%). The median monthly mortgage payment of residents was $1,847, which is notably lower than the Sydney metro average of $2,427, while the median weekly rent was $365, compared to $470 across Sydney metro.

Nationwide, St Marys's mortgage payments are below the Australian average of $1,863, and rents are below the national figure of $375.

Frequently Asked Questions - Housing

What percentage of homes are owned vs rented in the suburb of St Marys?
In the suburb of St Marys, 18.4% of homes are owned outright, 27.4% are owned with a mortgage, and 54.2% are rented.
What percentage of dwellings in the suburb of St Marys are houses?
According to the latest data, 51.3% of dwellings in the suburb of St Marys are houses.
What percentage of dwellings in the suburb of St Marys are apartments or units?
In the suburb of St Marys, 18.6% of dwellings are apartments or units, with an additional 30.0% being semi-detached dwellings.
What is the level of outright home ownership in the suburb of St Marys?
Outright home ownership in the suburb of St Marys stands at 18.4%, compared to 28.7% in Greater Sydney.
What is the median monthly mortgage repayment in the suburb of St Marys?
The median monthly mortgage repayment in the suburb of St Marys is $1,847, compared to $2,427 in Greater Sydney.
What is the median weekly rent in the suburb of St Marys?
The median weekly rent in the suburb of St Marys is $365, compared to $470 in Greater Sydney.
What is the distribution of rental prices in the suburb of St Marys?
In the suburb of St Marys, 6.0% of rentals are $0-149/week, 34.6% are $150-349/week, 59.1% are $350-649/week, 0.4% are $650-949/week, and 0.0% are $950+/week.
What is the average monthly housing cost in the suburb of St Marys?
The aggregate monthly housing cost in the suburb of St Marys is $1,363, which represents the average monthly cost across all housing types.
What percentage of income do residents spend on housing in the suburb of St Marys?
In the suburb of St Marys, households with mortgages typically spend 29.7% of their income on mortgage repayments, while renters spend 25.4% of their income on rent.
How crowded are homes in the suburb of St Marys?
The average persons per bedroom ratio in the suburb of St Marys is 0.9, indicating the level of household density.
How does housing affordability in the suburb of St Marys compare to the region?
Housing affordability in the suburb of St Marys shows mortgage holders spending 29.7% of income on repayments (vs 27.0% regionally), while renters spend 25.4% of income on rent (vs 22.6% regionally).
What types of dwellings are most common in the suburb of St Marys?
The dwelling mix in the suburb of St Marys consists of 51.3% detached houses, 30.0% semi-detached dwellings, 18.6% apartments, and 0.1% other dwelling types.
What is the weighted average housing cost based on tenure mix in the suburb of St Marys?
Considering the housing occupancy patterns, the weighted average monthly housing cost is approximately $1,363. This accounts for outright owners paying no housing costs, mortgage holders paying $1,847/month, and renters paying $1,580/month.
How affordable is housing in the suburb of St Marys relative to local incomes?
Housing in St Marys consumes approximately 21.9% of median household income ($6,222 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 suburb of St Marys?
Recent development applications in St Marys show attached dwellings contributing 54% of approvals compared to 49% of existing stock, while detached houses represent 46% of applications versus 51% of current dwellings. This suggests development patterns consistent with existing housing mix. This area is seeing substantial increases in dwelling density compared to most Australian locations.

HouseholdsHousehold Composition in St Marys (NSW)

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St Marys (NSW) counted 4,771 households at the 2021 Census, an estimated 5,379 today, averaging 2.5 people each. 28% are couples with children, against 18% couples without children. 31% 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 make up the majority of households at 64.9%, consisting of couples with children at 27.6%, couples without children at 17.8%, and single parents with children at 17.3%. Non-family living arrangements account for the remaining 35.1%, with single-person households representing 31.2% and group shared households making up 4.1% of the total. The median household size of 2.5 residents is below the Greater Sydney average of 2.7.

Frequently Asked Questions - Households

How many households are in the suburb of St Marys?
As of the 2021 Census, the suburb of St Marys had 4,771 households. Based on population growth patterns, this has grown by approximately 12.7% to an estimated 5,379 households today.
What is the typical household size?
The median household size in the suburb of St Marys is 2.5 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 64.9% of all households. The remaining households consist of lone person households (31.2%), group households (4.1%), and other household types (0.0%).
How are families structured in the area?
Among the 3,096 family households, 27.6% are couples with children, 17.8% are couples without children at home, and 17.3% are single parent families. This mix shapes local demand for schools, family services, and housing types.
How does the suburb of St Marys compare to regional household patterns?
Compared to Greater Sydney, the suburb of St Marys shows distinct household patterns. Lone person households are notably over-represented at 31.2% (versus 23.2% regionally). Conversely, family households are under-represented at 64.9% compared to the regional 72.6%. This higher proportion of single-person households drives demand for smaller dwellings and different community services.
What is the average family size?
Families in the suburb of St Marys have an average of 1.7 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 suburb of St Marys?
Marriage patterns reveal 37.0% of the adult population are currently married, while 42.4% 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 31.2% of all households in the suburb of St Marys, higher 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 4.1% 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 Marys (NSW)

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20.7% of adults in St Marys (NSW) hold a university qualification, including 14.2% with a bachelor degree and 5.3% with postgraduate qualifications. A further 25.1% hold a vocational qualification. 4 schools serve the area, with 1,856 enrolment places and an average ICSEA of 992 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

The local area experiences educational hurdles, with university qualification levels (20.7%) falling well below the Greater Sydney average of 38.0%. This highlights a challenge as well as a target for focused educational programs. Bachelor degrees are the most common tertiary qualification at 14.2%, followed by postgraduate degrees at 5.3% and graduate diplomas at 1.2%. Vocational and technical skills are highly prevalent, with 35.2% of residents aged 15+ holding trade credentials, consisting of advanced diplomas (10.1%) and certificates (25.1%). Enrollment in education is remarkably high, with 32.7% of residents currently undertaking formal study.

This comprises 12.1% in primary school, 7.8% in high school, and 4.6% enrolled in tertiary institutions.

Frequently Asked Questions - Education

What percentage of people in the suburb of St Marys have university qualifications?
20.7% of people aged 15 and over in the suburb of St Marys have university qualifications, compared to 38.0% in the broader region.
What percentage of people in the suburb of St Marys have no formal qualifications?
44.1% of people aged 15 and over in the suburb of St Marys have no formal qualifications, compared to 34.2% regionally.
How does the suburb of St Marys's education level compare to national averages?
The suburb of st marys 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 suburb of St Marys?
The most common qualifications in the suburb of St Marys are: Certificate (25.1%), Bachelor Degree (14.2%), Advanced Diploma (10.1%).
What proportion of the suburb of St Marys's population is currently attending educational institutions?
32.7% of the population in the suburb of St Marys is currently engaged in formal education, with 12.1% in primary school, 7.8% in secondary school, 4.6% at university.
What is the ICSEA score for schools in the suburb of St Marys?
The average ICSEA (Index of Community Socio-Educational Advantage) score for schools in the suburb of St Marys is 992, indicating below-average socio-educational advantage compared to the national average of 1000.
How many schools are located within the suburb of St Marys?
There are 4 schools within the suburb of St Marys, with a combined enrollment of approximately 1,856 students.
What types of schools are available in the suburb of St Marys?
The suburb of st marys includes 3 primary schools, 1 secondary school.

Schools Detail

AmenitiesServices & Amenities in St Marys (NSW)

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Getting AroundTransport & Commuting in St Marys (NSW)

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Public transport in St Marys (NSW) reaches 116 stops on 46 routes, timetabled for about 8,200 services a week. The typical home sits about 160 m from its nearest stop. Buses carry the largest share of public transport commuters. Households keep an average of 1.0 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 analysis of public transport reveals 116 active transit stops in St Marys, comprising a combination of trains and buses. These stops are served by 46 unique routes, which provide a total of 8,233 passenger trips every week. Access to transport is rated as excellent, with residents living an average of 161 meters from their nearest transit stop. Given the area's residential nature, the majority of workers commute outside the suburb, with cars remaining the main travel mode at 82%, followed by trains at 10%. Motor vehicle ownership averages 1.0 per household, which is below the regional average.

A total of 24.2% of residents worked from home, according to the 2021 Census, which may reflect pandemic-era conditions. Transit service frequency averages 1,176 runs per day across all routes, which corresponds to roughly 70 weekly trips for each individual stop. The accompanying map displays the 100 closest transit stops relative to the centrepoint of the location.

Frequently Asked Questions - Transport

How many public transport stops are in St Marys (NSW)?
There are 116 public transport stops within the suburb of St Marys.
How frequent are the transport services in St Marys (NSW)?
the suburb of St Marys has 8,233 weekly trips across 46 routes, averaging 1,176 trips per day.
How far are residents from public transport in St Marys (NSW)?
On average, residential properties are 161 meters from the nearest transport stop.

Transport Stops Detail

HealthcareHealth Services in St Marys (NSW)

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68.8% of residents in St Marys (NSW) report no long-term health condition, a less healthy profile than 81% of areas nationally. 6.3% need daily assistance with core activities, and 50.4% hold private health cover. The standardised death rate runs at 6.5 per 1,000 residents. Health conditions, assistance needs and insurance are 2021 Census measures; the death rate comes from current ABS releases.

Detail

Health indicators point to significant challenges in St Marys, based on AreaSearch's evaluation of mortality rates and the prevalence of chronic illnesses, with common conditions observed across both younger and older demographics. The rate of private health insurance is low, covering approximately 50% of the population (~7,533 people). This is lower than the 59.9% recorded across Greater Sydney and the national average of 55.7%. Asthma and mental health issues are the most prevalent medical conditions in the area, affecting 8.4 and 8.3% of residents respectively, while 68.8% of the population reported no chronic health conditions, compared to 74.6% across Greater Sydney.

Residents of working age exhibit higher than average rates of chronic health conditions. Seniors aged 65 and over make up 13.0% of the local population (1,942 people), which is lower than the 15.5% average in Greater Sydney. Health outcomes for older residents present some difficulties, with national rankings generally matching those of the wider population.

Frequently Asked Questions - Health

How many people in the suburb of St Marys have private health insurance?
Around 50.4% of people in the suburb of St Marys 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 suburb of St Marys?
In the suburb of St Marys, 6.3% 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 suburb of St Marys?
8.4% of people in the suburb of St Marys 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 suburb of St Marys?
Diabetes affects 5.9% of the the suburb of St Marys 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 suburb of St Marys?
3.4% of people in the suburb of St Marys have heart disease. Across the region of Greater Sydney, 3.2% of the population is affected by heart disease.
How does the suburb of St Marys compare to the region in terms of overall private health coverage?
In the suburb of St Marys, 50.4% 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 Marys (NSW)

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36.9% of St Marys (NSW) residents were born overseas and 34.2% speak a language other than English at home, more culturally diverse than 80% of areas nationally. The largest reported ancestries are Australian (19.8%) and English (18.5%). 3.5% of residents identify as Aboriginal and/or Torres Strait Islander. Ancestry, language and country of birth are counted only by the Census, so these are 2021 figures.

Detail

St Marys exhibits a high level of cultural diversity, with 36.9% of residents born outside Australia and 34.2% speaking a non-English language at home. Christianity is the dominant religion, practiced by 58.7% of the local population. However, the most distinct religious overrepresentation is Hinduism, which represents 5.8% of the community, compared to 5.2% across Greater Sydney. Regarding parent countries of birth, the three largest ancestry groups in St Marys are Australian at 19.8%, Other at 19.3%, and English at 18.5%. In addition, there are notable differences in the proportions of other ethnic groups: Filipino residents are highly overrepresented at 5.2% of St Marys (compared to 2.0% regionally), Samoan residents at 2.6% (compared to 0.5%), and Maori residents at 1.5% (compared to 0.4%).

Frequently Asked Questions - Diversity

What is the level of cultural diversity in the suburb of St Marys?
St Marys scores quite highly on cultural diversity, with 36.9% of its population born overseas and 34.2% speaking a language other than English at home.
What is the most common religion in the suburb of St Marys?
The main religion in St Marys was found to be Christianity, which makes up 58.7% of people in St Marys. However, the most apparent overrepresentation was in Hinduism, which comprises 5.8% of the population, compared to 5.2% across Greater Sydney.
What are the top countries of origin in the suburb of St Marys?
In terms of ancestry (country of birth of parents), the top three represented groups in St Marys are Australian, comprising 19.8% of the population, Other, comprising 19.3% of the population, and English, comprising 18.5% of the population. Additionally, there are notable divergences in the representation of certain other ethnic groups: Filipino is notably overrepresented at 5.2% of St Marys (vs 2.0% regionally), Samoan at 2.6% (vs 0.5%) and Maori at 1.5% (vs 0.4%).
How does the percentage of people born overseas compare to the regional average?
36.9% of the the suburb of St Marys population was born overseas, compared to 40.5% regionally.
What percentage of the the suburb of St Marys population speaks a language other than English at home?
34.2% of the population in the suburb of St Marys speaks a language other than English at home, compared to 39.5% in the wider region.
How many people in the suburb of St Marys identify as Australian Aboriginal?
3.5% of the the suburb of St Marys population identifies as Australian Aboriginal, compared to 1.3% in the region.
What is the citizenship status of the population in the suburb of St Marys?
76.6% of the the suburb of St Marys population holds citizenship, compared to 80.8% in the wider region.

Age StructureAge Profile of St Marys (NSW)

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The median resident of St Marys (NSW) is 34, younger than 82% of areas nationally. 30.1% 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

With a median age of 34 years, St Marys is slightly younger than the Greater Sydney average of 37 and noticeably younger than the Australian median of 38 years. Compared to Greater Sydney, St Marys has a higher proportion of children aged 0 - 4 (7.6%) but a lower share of seniors aged 75 - 84 (4.1%). Since the 2021 Census, the proportion of residents aged 15 to 24 has risen from 11.8% to 13.2% of the population, while the 0 to 4 age group has decreased from 8.2% to 7.6%.

Population projections for 2041 suggest major demographic changes for St Marys, with the 45 to 54 cohort expected to grow the most at 26%, adding 444 residents to total 2,163, whereas the 0 to 4 cohort is projected to grow by only 7% (84 people).

Frequently Asked Questions - Age

What is the median age in the suburb of St Marys?
According to the latest data, the median age in the suburb of St Marys is 34 years.
How does the suburb of St Marys's median age compare to broader areas?
At 34 years, St Marys is 3 years younger than the Greater Sydney average (37 years) and 4 years younger than the national average (38 years).
What age groups are over-represented in the suburb of St Marys?
The most over-represented age group in the suburb of St Marys compared to the Greater Sydney region is the 0 - 4 group, making up 7.6% of the population.
What age groups are under-represented in the suburb of St Marys?
The most under-represented age group in the suburb of St Marys compared to the Greater Sydney region is the 75 - 84 group, making up 4.1% of the population.
Are there age groups with notable population variances?
Yes, certain age groups in the suburb of St Marys show significant variance compared to the Greater Sydney region. The most over-represented age group is 0-4 year-olds (7.6% vs 5.6%). The most under-represented age group is 85+ year-olds (1.3% vs 2.1%).
What is the percentage of children (0-14 years) in the suburb of St Marys?
The percentage of children aged 0-14 years in the suburb of St Marys is 20.3%.
What is the percentage of older people (65+ years) in the suburb of St Marys?
The percentage of people aged 65 and over in the suburb of St Marys is 13.0%.

Data & MethodBoundaries, Sources & Method for St Marys (NSW)

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 Suburb (SAL) 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) May 2026 3 months ago 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 May 2026, with the 2021 Census supplying the small-area baseline.
Age profile ABS, Geoscience Australia, State governments Annual May 2026 3 months ago headline measures · 2021 Census baseline
Age cohorts are re-based to the latest ABS population estimates and state projections, current to May 2026. Each cohort is held as a Census baseline and a current estimate.
Development & approvals ABS, GNAF Monthly (ABS approvals) Jun 2026 2 months ago headline measures · May 2026 baseline
Property sales & rents Valuer General, Rental Board, ABS Weekly sales, quarterly rents Aug 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 Aug 2026.
Infrastructure projects Infrastructure Australia, State agencies, Local governments Daily Jul 2026 last month all 12 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 5 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 this month headline measures · 2021 Census baseline
Transport ABS, State Transport Departments Each timetable release Jul 2026 last month headline measures · 2021 Census baseline
Services & amenities Provider directories, ACECQA Continuous Jul 2026 last month 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 — 403 validated new addresses here. The headline figure is therefore a current estimate for May 2026, not a 2021 count (13,256 at the 2021 Census → 14,944 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 May 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 (SAL13658). QuickStats reports 2021 only — the figures on this page are more current wherever the ledger shows a later date.

Common questions about this page

How do St Marys (NSW) suburb boundaries differ from Statistical Areas?
This page uses Suburbs and Localities (SAL) boundaries (suburb-style geography). SAL represents commonly-known suburb names used in addresses, while Statistical Areas (SA2) are designed for census/statistical reporting. Even when sharing the same name, SAL and SA2 boundaries often cover different geographic areas with different populations.
Where does the data on this St Marys (NSW) 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 Marys (NSW) 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 (Jun 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 May 2026), age profile (to May 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