St Marys - North St Marys
Statistical Area - sa2

St Marys - North St Marys lies within the top quartile of areas nationally for population growth performance according to AreaSearch analysis of recent, and medium to long-term trends

Based on AreaSearch's analysis, St Marys - North St Marys' population is around 18,730 as of Nov 2025. This reflects an increase of 1,405 people (8.1%) since the 2021 Census, which reported a population of 17,325 people. The change is inferred from the estimated resident population of 18,608 from the ABS as of June 2024 and an additional 385 validated new addresses since the Census date. This level of population equates to a density ratio of 1,456 persons per square kilometer, which is above the average seen across national locations assessed by AreaSearch. St Marys - North St Marys' 8.1% growth since the 2021 census exceeded the SA3 area (4.4%), along with the SA4 region, marking it as a growth leader in the region. Population growth for the area was primarily driven by overseas migration that contributed approximately 67.1% of overall population gains during recent periods.

AreaSearch is adopting ABS/Geoscience Australia projections for each SA2 area, as released in 2024 with 2022 as the base year. For any SA2 areas not covered by this data, AreaSearch is utilising the NSW State Government's SA2 level projections, as released in 2022 with 2021 as the base year. Growth rates by age group from these aggregations are also applied to all areas for years 2032 to 2041. Looking at population projections moving forward, a significant population increase in the top quartile of national areas is forecast, with the area expected to grow by 4,616 persons to 2041 based on the latest population numbers, recording a gain of 24.0% in total over the 17 years.

AreaSearch assessment of residential development activity positions St Marys - North St Marys among the top 25% of areas assessed nationwide

North St Marys has seen approximately 160 new homes approved annually. Over the past five financial years, from FY21 to FY25, around 800 homes have been approved, with an additional 20 approved so far in FY26. On average, 1.6 new residents arrived per year for each new home over these five years, suggesting a balanced supply and demand. However, this ratio has increased to 5.3 people per dwelling over the past two financial years, indicating growing popularity and potential undersupply.

The average construction value of new homes is $212,000, which is lower than regional levels, offering more affordable housing options for buyers. This year, $92.5 million in commercial approvals have been registered, indicating strong local business investment. Compared to Greater Sydney, North St Marys has 93.0% more construction activity per person. Recent construction comprises 26.0% detached dwellings and 74.0% townhouses or apartments, marking a significant shift from the current housing pattern of 61.0% houses. This trend may be due to diminishing developable land availability and evolving lifestyle preferences. With around 208 people per dwelling approval, North St Marys shows a developing market.

Population forecasts indicate that North St Marys will gain approximately 4,491 residents by 2041. Current construction rates appear balanced with future demand, fostering steady market conditions without excessive price pressure.

St Marys - North St Marys has very high levels of nearby infrastructure activity, ranking in the top 20% nationally

AreaSearch has identified 38 projects that could impact the area, with key ones being Sydney Metro Western Sydney Airport Line, St Marys Station Upgrade and Metro Integration, Western Sydney Aerotropolis Infrastructure and Development, and Luddenham Metro Station and Sydney Science Park. The following list details those likely to be most relevant.

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

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Employment conditions in St Marys - North St Marys face significant challenges, ranking among the bottom 10% of areas assessed nationally

St Marys - North St Marys has a skilled workforce with manufacturing and industrial sectors prominently represented. As of June 2025, the unemployment rate stands at 9.0%.

In this month, 8,221 residents are employed while the unemployment rate is 4.8% higher than Greater Sydney's rate of 4.2%, indicating room for improvement. Workforce participation in St Marys - North St Marys lags behind Greater Sydney, with a participation rate of 51.9% compared to 60.0%. The leading employment industries among residents are health care & social assistance, retail trade, and construction. Notably, transport, postal & warehousing has an employment concentration of 2.1 times the regional average.

Conversely, professional & technical services have a limited presence with only 3.9% employment compared to the regional average of 11.5%. Many residents commute elsewhere for work based on Census data analysis. Over the year to June 2025, labour force levels decreased by 2.3%, and employment declined by 2.1%, causing a slight drop in unemployment rate by 0.2 percentage points. In contrast, Greater Sydney saw employment growth of 2.6% and an increase in labour force by 2.9%, with a rise in unemployment rate by 0.3 percentage points. Jobs and Skills Australia's national employment forecasts from May 2025 project that national employment will expand by 6.6% over five years and 13.7% over ten years, but growth rates vary significantly between industry sectors. Applying these projections to St Marys - North St Marys' employment mix suggests local growth of approximately 6.2% over five years and 13.0% over ten years.

Income levels sit below national averages according to AreaSearch assessment

AreaSearch's latest postcode level ATO data for financial year 2022 shows that income in St Marys - North St Marys is below the national average. The median income is $51,994 and the average income stands at $56,284. In contrast, Greater Sydney has a median income of $56,994 and an average income of $80,856. Based on Wage Price Index growth of 12.61% since financial year 2022, current estimates for St Marys - North St Marys would be approximately $58,550 (median) and $63,381 (average) as of September 2025. The 2021 Census shows that household, family, and personal incomes in St Marys - North St Marys rank modestly, between the 28th and 32nd percentiles. The earnings profile indicates that the largest segment comprises 34.1% earning $1,500 - $2,999 weekly (6,386 residents), which is consistent with broader trends across the region showing 30.9% in the same category. Housing affordability pressures are severe, with only 78.0% of income remaining after housing costs, ranking at the 21st percentile.

St Marys - North St Marys displays a diverse mix of dwelling types, with a higher proportion of rental properties than the broader region

St Marys - North St Marys' dwelling structure, as per the latest Census, had 61.2% houses and 38.8% other dwellings (semi-detached, apartments, 'other' dwellings), compared to Sydney metro's 81.7% houses and 18.2% other dwellings. Home ownership in St Marys - North St Marys stood at 19.3%, with mortgaged dwellings at 26.2% and rented ones at 54.5%. The median monthly mortgage repayment was $1,842, below Sydney metro's $2,000, while the median weekly rent was $360, compared to Sydney metro's $390. Nationally, St Marys - North St Marys' mortgage repayments were lower than the Australian average of $1,863, and rents were less than the national figure of $375.

St Marys - North St Marys features high concentrations of group households and lone person households, with a lower-than-average median household size

Family households constitute 65.6% of all households, including 27.4% couples with children, 17.5% couples without children, and 18.7% single parent families. Non-family households account for the remaining 34.4%, with lone person households at 30.2% and group households comprising 4.2%. The median household size is 2.5 people, which is smaller than the Greater Sydney average of 2.8.

St Marys - North St Marys faces educational challenges, with performance metrics placing it in the bottom quartile of areas assessed nationally

The area's university qualification rate stands at 18.8%, significantly lower than Greater Sydney's average of 38.0%. Bachelor degrees are the most common at 13.0%, followed by postgraduate qualifications (4.7%) and graduate diplomas (1.1%). Vocational credentials are prevalent, with 35.7% of residents aged 15+ holding them, including advanced diplomas (9.8%) and certificates (25.9%). Educational participation is high at 33.5%, comprising primary education (12.6%), secondary education (8.3%), and tertiary education (4.4%).

Seven schools operate in St Marys - North St Marys, educating approximately 2,889 students. The area's educational provision is balanced with four primary and three secondary schools serving distinct age groups.

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

Transport analysis in St Marys - North St Marys shows 130 active public transport stops. These include a mix of train and bus services. The area is served by 49 individual routes that collectively provide 6744 weekly passenger trips.

Transport accessibility is rated excellent with residents typically located 159 meters from the nearest stop. Service frequency averages 963 trips per day across all routes, equating to approximately 51 weekly trips per individual stop.

Health performance in St Marys - North St Marys is lower than average with common health conditions somewhat prevalent across the board, though to a considerably higher degree among older age cohorts

North St Marys faces significant health challenges with common health conditions prevalent among its population. Approximately 48% (~8,990 people) have private health cover, lower than the national average of 55.3%.

The most common medical conditions are asthma and mental health issues, affecting 8.7 and 8.4% of residents respectively. Conversely, 67.6% claim to be free from medical ailments compared to 69.7% across Greater Sydney. The area has 14.0% (2,618 people) aged 65 and over, with health outcomes among seniors requiring more attention than the broader population.

St Marys - North St Marys is among the most culturally diverse areas in the country based on AreaSearch assessment of a range of language and cultural background related metrics

St Marys-North St Marys has high cultural diversity, with 34.2% of its population born overseas and 31.1% speaking a language other than English at home. Christianity is the predominant religion in St Marys-North St Marys, comprising 57.7%. Hinduism is overrepresented compared to Greater Sydney, making up 4.8% versus 3.5%.

The top three ancestry groups are Australian (20.8%), English (19.8%), and Other (17.5%). Samoan (2.7%) and Filipino (4.7%) populations are notably higher than regional averages of 2.1% and 4.5%, respectively, while Maori representation is slightly higher at 1.5%.

St Marys - North St Marys's population is younger than the national pattern

St Marys - North St Marys has a median age of 35 years, which is slightly younger than Greater Sydney's 37 and somewhat younger than the national average of 38 years. The 5-14 age group comprises 13.6%, compared to Greater Sydney, while the 35-44 cohort makes up 14.4%. Between 2021 and present, the 15-24 age group has increased from 12.3% to 13.5% of the population. Conversely, the 25-34 cohort has decreased from 16.4% to 15.6%. By 2041, demographic projections indicate substantial changes for St Marys - North St Marys. The 75-84 age cohort is projected to rise significantly, expanding by 702 people (an 83% increase) from 842 to 1,545. Meanwhile, the 0-4 cohort grows modestly by 9%, an increase of 118 people.