Sadleir

Sadleir has seen population growth performance typically on par with national averages when looking at short and medium term trends

Based on ABS population updates for the broader area, and new addresses validated by AreaSearch since the Census, Sadleir's estimated population is around 3,313 as of Nov 2025. This reflects an increase of 70 people (2.2%) since the 2021 Census, which reported a population of 3,243 people. The change is inferred from the resident population of 3,276 estimated by AreaSearch following examination of the latest ERP data release by the ABS in June 2024 and an additional 4 validated new addresses since the Census date. This level of population equates to a density ratio of 3,681 persons per square kilometer, placing it in the upper quartile relative to national locations assessed by AreaSearch. Population growth for the Sadleir statistical area (Lv2) was primarily driven by overseas migration that contributed approximately 52.0% 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. Anticipating future population dynamics, an above median population growth of statistical areas across the nation is projected, with the Sadleir (SA2) expected to increase by 618 persons to 2041 based on aggregated SA2-level projections, reflecting an increase of 18.2% in total over the 17 years.

AreaSearch assessment of residential development drivers sees a low level of activity in Sadleir, placing the area among the bottom 25% of areas assessed nationally

Based on AreaSearch analysis of ABS building approval numbers allocated from statistical area data, Sadleir has experienced around 6 dwellings receiving development approval per year. Over the past five financial years, between FY21 and FY25, approximately 34 homes were approved, with an additional 3 approved so far in FY26. Despite population decline over this period, housing supply has remained adequate relative to demand, resulting in a balanced market with good buyer choice.

The average construction cost of new properties is $222,000, which is under regional levels, indicating more affordable housing choices for buyers. In the current financial year, $303,000 in commercial approvals have been registered, reflecting the area's residential nature. Compared to Greater Sydney, Sadleir shows significantly reduced construction activity, with 90.0% below the regional average per person. This constrained new construction typically reinforces demand and pricing for existing properties, which is also below national averages, suggesting possible planning constraints. New development consists of 71.0% detached houses and 29.0% medium to high-density housing, maintaining Sadleir's traditional suburban character focused on family homes.

With around 506 people per approval, Sadleir indicates a mature market. Population forecasts estimate an increase of 603 residents by 2041. If current development rates continue, housing supply may not keep pace with population growth, potentially increasing buyer competition and supporting stronger price growth.

Sadleir has very high levels of nearby infrastructure activity, ranking in the top 10% nationally

The performance of a region is significantly impacted by changes in local infrastructure, major projects, and planning initiatives. AreaSearch has identified three key projects that are expected to influence the area: Hurlstone Agricultural High School Redevelopment, Spring Square by Poly Bankstown, Busby Social Housing for Seniors, and Avala Apartments Miller. These projects are listed below as they are deemed most relevant.

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Employment drivers in Sadleir are experiencing difficulties, placing it among the bottom 20% of areas assessed across Australia

Sadleir has a diverse workforce with representation from both white and blue collar jobs. The manufacturing and industrial sectors are prominently featured.

As of September 2025, the unemployment rate is 15.2%. This is an increase from the previous year's estimated employment growth of 7.6%. Sadleir's unemployment rate is higher than Greater Sydney's rate of 4.2%, indicating room for improvement. Workforce participation in Sadleir lags behind Greater Sydney, with a participation rate of 33.3% compared to Greater Sydney's 60.0%.

Employment among residents is concentrated in health care & social assistance, retail trade, and manufacturing. Manufacturing employment levels are notably high, at 2.2 times the regional average. However, professional & technical services employ only 2.6% of local workers, which is lower than Greater Sydney's rate of 11.5%. Between September 2024 and September 2025, employment in Sadleir increased by 7.6%, while the labour force increased by 4.1%. This resulted in a decrease in unemployment by 2.8 percentage points. In contrast, Greater Sydney experienced employment growth of 2.1% and labour force growth of 2.4%, with a slight rise in unemployment. State-level data from November 25 shows that NSW employment contracted by 0.03%, losing 2,260 jobs. The state's unemployment rate was 3.9%, which compares favourably to the national unemployment rate of 4.3%. Jobs and Skills Australia's national employment forecasts from May-25 provide insights into potential future demand within Sadleir. These projections suggest that national employment should increase by 6.6% over five years and 12.7% over ten years. However, growth rates differ significantly between industry sectors. Applying these industry-specific projections to Sadleir's employment mix suggests local employment could increase by approximately 5.8% over five years and 12.6% over ten years.

Income metrics place the area in the bottom 10% of locations nationally according to AreaSearch analysis

The suburb of Sadleir had a lower income level compared to national averages based on latest Australian Taxation Office data aggregated by AreaSearch for financial year 2023. The median income among taxpayers in Sadleir was $38,586 with an average income of $44,763, contrasting with Greater Sydney's figures of $60,817 and $83,003 respectively. Considering a Wage Price Index growth rate of 8.86% since financial year 2023, estimated incomes for Sadleir would be approximately $42,005 (median) and $48,729 (average) by September 2025. According to the 2021 Census, household, family, and personal incomes in Sadleir all fell within the first and second percentiles nationally. Income distribution data indicated that the $400 - 799 bracket dominated with 28.5% of residents (944 people), unlike regional levels where the $1,500 - 2,999 bracket led at 30.9%. Economic circumstances showed widespread financial pressure, with 42.2% of households having modest weekly budgets below $800. Housing affordability pressures were severe, with only 73.8% of income remaining, ranking at the third percentile nationally.

Sadleir is characterized by a predominantly suburban housing profile, with a higher proportion of rental properties than the broader region

Sadleir's dwelling structures, as per the latest Census, consisted of 85.2% houses and 14.8% other dwellings (semi-detached, apartments, 'other' dwellings), compared to Sydney metro's 90.4% houses and 9.6% other dwellings. Home ownership in Sadleir stood at 19.7%, with mortgaged dwellings at 25.9% and rented ones at 54.3%. The median monthly mortgage repayment was $1,878, lower than Sydney metro's average of $2,475. The median weekly rent in Sadleir was $250, below Sydney metro's $490 and the national average of $375. Nationally, Sadleir's mortgage repayments were higher than the Australian average of $1,863.

Sadleir has a typical household mix, with a lower-than-average median household size

Family households constitute 69.8% of all households, including 30.2% couples with children, 11.9% couples without children, and 25.8% single parent families. Non-family households comprise the remaining 30.2%, with lone person households at 27.1% and group households at 2.8%. The median household size is 3.0 people, which is smaller than the Greater Sydney average of 3.4.

Sadleir faces educational challenges, with performance metrics placing it in the bottom quartile of areas assessed nationally

The area's university qualification rate is 9.5%, significantly lower than Greater Sydney's average of 38.0%. This presents both a challenge and an opportunity for targeted educational initiatives. Bachelor degrees are the most common at 7.2%, followed by postgraduate qualifications (1.8%) and graduate diplomas (0.5%). Trade and technical skills are prominent, with 31.8% of residents aged 15+ holding vocational credentials – advanced diplomas (10.0%) and certificates (21.8%).

Educational participation is high, with 36.5% of residents currently enrolled in formal education. This includes 13.9% in primary education, 11.7% in secondary education, and 4.8% pursuing tertiary education.

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

Sadleir has 16 active public transport stops. These are served by a mix of buses on 17 different routes. Together, these routes provide 965 weekly passenger trips.

The accessibility of transport in Sadleir is rated excellent, with residents typically located 143 meters from the nearest stop. On average, there are 137 trips per day across all routes, which equates to approximately 60 weekly trips per individual stop.

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

Sadleir faces significant health challenges with common health conditions somewhat prevalent across the board, particularly among older age cohorts to a considerably higher degree. The rate of private health cover is extremely low at approximately 45% of the total population (~1,481 people), compared to 53.8% across Greater Sydney and 55.7% nationally. The most common medical conditions in the area are asthma and arthritis, impacting 8.8 and 8.7% of residents respectively, while 68.3% declare themselves completely clear of medical ailments compared to 77.9% across Greater Sydney.

The area has 13.4% of residents aged 65 and over (443 people), which is higher than the 10.1% in Greater Sydney. Health outcomes among seniors present some challenges, requiring more attention than the broader population.

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

Sadleir has a high level of cultural diversity, with 39.9% of its population born overseas and 57.3% speaking a language other than English at home. The predominant religion in Sadleir is Christianity, comprising 36.5% of the population. However, Islam is significantly overrepresented, making up 29.4%, compared to the Greater Sydney average of 12.9%.

Regarding ancestry, the top three groups are Other (20.8%), Australian (19.6%), and English (12.7%). Notably, Lebanese ethnicity is overrepresented in Sadleir at 12.7% compared to the regional average of 4.0%, Vietnamese at 11.5% versus 4.4%, and Samoan at 2.6% compared to 1.5%.

Sadleir's young demographic places it in the bottom 15% of areas nationwide

Sadleir's median age is 33, which is younger than Greater Sydney's figure of 37 and Australia's national average of 38 years. Compared to Greater Sydney, Sadleir has a higher percentage of residents aged 15-24 (17.2%) but fewer residents aged 25-34 (11.1%). Between the 2021 Census and present day, the 15-24 age group has increased from 15.7% to 17.2%, while the 65-74 cohort has risen from 6.5% to 7.6%. Conversely, the 25-34 age group has declined from 12.2% to 11.1%. Population forecasts for 2041 indicate significant demographic shifts in Sadleir. The 15-24 cohort is projected to grow by 22%, adding 126 residents to reach a total of 696. Meanwhile, both the 0-4 and 35-44 age groups are expected to decrease in number.