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 18,674 as of Aug 2025. This reflects an increase of 1,349 people (7.8%) since the 2021 Census, which reported a population of 17,325 people. The change is inferred from the estimated resident population of 18,609 from the ABS as of June 2024 and an additional 362 validated new addresses since the Census date. This level of population equates to a density ratio of 1,452 persons per square kilometer, which is above the average seen across national locations assessed by AreaSearch. St Marys - North St Marys' 7.8% growth since the 2021 census exceeded the SA3 area (4.3%), 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 24.4% 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. The Australian Bureau of Statistics produces development approval data on a financial year basis. Over the past five financial years, from FY21 to FY25, around 800 dwellings were approved. In FY26 up until now, 12 dwellings have been recorded. On average, about 1.6 people moved to the area annually for each dwelling built over these five financial years.

However, this number has intensified to 5.3 people per dwelling in the past two financial years, suggesting growing popularity and potential undersupply. New homes are being constructed at an average expected cost of $350,000, which is below regional levels, indicating more accessible housing choices for buyers. This financial year has seen $92.5 million in commercial development approvals, demonstrating high levels of local commercial activity. Compared to Greater Sydney, St Marys - North St Marys records 93.0% more development activity per person. Recent construction comprises 26.0% detached dwellings and 74.0% townhouses or apartments, marking a significant shift from the existing housing pattern of 61.0% houses. This trend suggests diminishing developable land availability and responds to evolving lifestyle preferences and housing affordability needs.

With around 208 people per dwelling approval, St Marys - North St Marys shows a developing market. By 2041, the area is expected to grow by approximately 4,547 residents. 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

Changes to local infrastructure significantly impact an area's performance. AreaSearch has identified 35 projects that could affect this region. Notable initiatives include Sydney Metro - Western Sydney Airport, St Marys Station Upgrade and Metro Integration, Luddenham Metro Station and Science Park, Aerotropolis Infrastructure and Development. The following list specifies those most relevant.

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

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

North St Marys, as of June 2025, has an unemployment rate of 9.0%. It has a skilled workforce with manufacturing and industrial sectors strongly represented.

There are 8,221 residents employed while the unemployment rate is 4.8% higher than Greater Sydney's rate of 4.2%. Workforce participation lags at 51.9%, compared to Greater Sydney's 60.0%. Leading employment industries include health care & social assistance, retail trade, and construction. The area has a notable concentration in transport, postal & warehousing with employment levels at 2.1 times the regional average.

However, professional & technical services have limited presence with only 3.9% of employment compared to the regional average of 11.5%. Over the year to June 2025, labour force levels decreased by 2.3%, and employment declined by 2.1%, resulting in a fall in unemployment rate by 0.2 percentage points. In contrast, Greater Sydney saw employment grow by 2.6% and labour force expand by 2.9%, with unemployment rising by 0.3 percentage points. State-level data for NSW to Sep-25 shows employment contracted by 0.41%, losing 19,270 jobs, with an unemployment rate of 4.3%. National forecasts from Jobs and Skills Australia project national employment growth of 6.6% over five years and 13.7% over ten years. Applying these projections to North St Marys suggests local growth of approximately 6.2%% over five years and 13.0% over ten years, though this is a simple extrapolation for illustrative purposes only.

Income levels sit below national averages according to AreaSearch assessment

AreaSearch's latest postcode level ATO data for financial year 2022 shows that in St Marys - North St Marys, median income is $51,994 and average income is $56,284. This is below Greater Sydney's figures of a median income of $56,994 and an average income of $80,856. Based on Wage Price Index growth of 10.6% since financial year 2022, estimated current incomes are approximately $57,505 (median) and $62,250 (average) as of March 2025. According to the 2021 Census, household, family, and personal incomes in St Marys - North St Marys rank modestly, between the 28th and 32nd percentiles. The earnings profile shows that 34.1% earn $1,500 - $2,999 weekly (6,367 residents), similar to the broader region's 30.9%. Housing affordability pressures are severe, with only 78.0% of income remaining, 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 structures, as per the latest Census, consisted of 61.2% houses and 38.8% other dwellings (semi-detached, apartments, 'other'). In comparison, Sydney metro had 81.7% houses and 18.2% other dwellings. Home ownership in St Marys - North St Marys stood at 19.3%, with mortgaged properties at 26.2% and rented ones at 54.5%. The median monthly mortgage repayment was $1,842, below Sydney metro's $2,000. 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 account for 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 constitute 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 faces educational challenges, with university qualification rates at 18.8%, significantly lower than the Greater Sydney average of 38.0%. This presents both a challenge and an opportunity for targeted educational initiatives. Bachelor degrees are most common at 13.0%, followed by postgraduate qualifications (4.7%) and graduate diplomas (1.1%). Trade and technical skills are prominent, with 35.7% of residents aged 15+ holding vocational credentials - advanced diplomas (9.8%) and certificates (25.9%).

Educational participation is high at 33.5%, including 12.6% in primary education, 8.3% in secondary education, and 4.4% pursuing tertiary education. Seven schools operate within St Marys - North St Marys, educating approximately 2,889 students. These include 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

The analysis of public transport in St Marys - North St Marys shows that there are currently 130 active transport stops operating. These stops offer a mix of train and bus services. There are 49 individual routes servicing these stops, collectively providing 6744 weekly passenger trips.

The report rates the transport accessibility as excellent, with residents typically located 159 meters from their nearest transport stop. The 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 across all age groups but more so among older cohorts. Approximately 48% (~8963 people) of the total population has private health cover, compared to 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% of residents report no medical ailments, slightly lower than Greater Sydney's 69.7%. The area has a higher proportion of seniors aged 65 and over (14%, or 2610 people), with health outcomes among this age group 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 a 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, accounting for 57.7% of its population. Hinduism is notably overrepresented compared to Greater Sydney, comprising 4.8% versus 3.5%.

The top three ancestral groups are Australian (20.8%), English (19.8%), and Other (17.5%). Certain ethnic groups have notable representation: Samoan at 2.7% (regional average is 2.1%), Filipino at 4.7% (similar to regional average of 4.5%), and Maori at 1.5% (slightly higher than the regional average of 1.3%).

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 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%. From 2021 to present, the 15-24 age group has increased from 12.3% to 13.5%, whereas the 25-34 cohort has decreased from 16.4% to 15.6%. By 2041, significant demographic changes are forecasted for St Marys - North St Marys. The 75-84 age group is projected to rise substantially by 704 people (84%), from 840 to 1,545. Meanwhile, the 0-4 cohort is expected to grow modestly by 9%, adding 122 people.