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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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2021 Census | -- people
Sales Activity
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Population
An assessment of population growth drivers in Mortdale reveals an overall ranking slightly below national averages considering recent, and medium term trends
Based on analysis of ABS population updates for the broader area, and new addresses validated by AreaSearch, the suburb of Mortdale's population is estimated at around 12,156 as of May 2026. This reflects an increase of 1,411 people (13.1%) since the 2021 Census, which reported a population of 10,745 people. The change is inferred from the resident population of 12,147 estimated by AreaSearch following examination of the latest ERP data release by the ABS in June 2025 and an additional 103 validated new addresses since the Census date. This level of population equates to a density ratio of 4,148 persons per square kilometer, which lies in the top 10% of national locations assessed by AreaSearch, making land in the area a highly-sought resource. Mortdale's 13.1% growth since the 2021 census exceeded the SA4 region (6.5%), along with the state, marking it as a growth leader in the region. Population growth for the suburb was primarily driven by overseas migration that contributed approximately 83.0% of overall population gains during recent periods.
AreaSearch is adopting ABS/Geoscience Australia projections for each SA2 area, 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, 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. Considering the projected demographic shifts, a population increase just below the median of statistical areas analysed by AreaSearch is expected in the suburb of Mortdale. The area is expected to increase by 901 persons to 2041 based on aggregated SA2-level projections, reflecting an increase of 7.3% in total over the 16 years.
Frequently Asked Questions - Population
Development
Recent residential development output has been above average within Mortdale when compared nationally
Based on AreaSearch analysis of ABS building approval numbers, Mortdale has experienced around 49 dwelling approvals annually. Between financial years FY-21 and FY-25, approximately 248 homes were approved, with an additional 74 approved in FY-26 so far. Each year, an average of 2.7 new residents per dwelling has been recorded over the past five financial years.
The average construction cost value for new homes is $616,000, indicating a focus on premium market properties. This financial year, Mortdale has seen $753,000 in commercial approvals. Compared to Greater Sydney, Mortdale's construction activity is 17.0% higher per person over the past five years. Recent construction comprises 46.0% detached houses and 54.0% townhouses or apartments.
With around 297 people per dwelling approval, Mortdale shows a developing market. According to AreaSearch's latest quarterly estimate, Mortdale is expected to grow by 892 residents through to 2041. Based on current development patterns, new housing supply should meet demand, providing good conditions for buyers and potentially facilitating population growth beyond current projections.
Frequently Asked Questions - Development
Development applications around Mortdale
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SOURCE: Planning portals and council registers, compiled by AreaSearch. Distance & bearing measured from the suburb midpoint.
Infrastructure
Mortdale has very high levels of nearby infrastructure activity, ranking in the top 10% nationally
A total of 24 projects have been identified by AreaSearch as potentially impacting the area. Key projects include the Mortdale RSL Redevelopment, Mortdale Local Centre Development Control Plan, 70-76 Pitt Street Mortdale, and Oatley to Como Walkway Upgrade. The following list details those likely to be most relevant.
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INFRASTRUCTURE SEARCH
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Frequently Asked Questions - Infrastructure
Rail Service Improvement Program - T4 Illawarra & Eastern Suburbs Line
A multi-billion-dollar upgrade (formerly More Trains, More Services) modernising the T4 line for higher frequency. Key works include the Digital Systems Program replacing trackside signals with ETCS Level 2 technology, platform extensions at Waterfall and Kiama for the Mariyung fleet, and power upgrades. As of May 2026, Mariyung trains have commenced passenger service on the South Coast Line (April 2026), and Digital Systems testing continues between Bondi Junction and Erskineville.
Mortdale Local Centre Development Control Plan
Council is preparing a Development Control Plan for Mortdale Local Centre to guide future growth while maintaining the community's preferred 'village feel'. Draft plan to be exhibited in second half of 2025. Focuses on low to medium density development with more parking, seating, and greenery.
Mortdale RSL Redevelopment
State Significant Development involving demolition of the existing Mortdale RSL Club and construction of a new community club, supermarket, 175 residential units including affordable housing, and basement car parking. The mixed-use development aims to revitalize the southwestern area of Mortdale Local Centre while providing the club with sustainable long-term revenue through retail tenancies.
Mortdale Maintenance Centre Upgrade
Upgrade of the Mortdale Maintenance Centre as part of the More Trains, More Services program (also known as Rail Service Improvement Program). Includes construction of a new bogie exchange system to automatically remove train wheels for maintenance, extending the driveway entrance and building a new driveway exit for improved safety, installing a new electrical substation, upgrading sheds for maintenance work, track modifications, drainage upgrades, new retaining walls, electrical works and lighting. The project supports increased train services and improved rail operations. Part of a $300m contract for upgrades between Mortdale and Kiama, delivered by Laing O'Rourke and KBR. The bogie exchange system was completed in March 2023, with remaining access road upgrades off Oatley Avenue in progress as of 2025.
King Georges Road Upgrade
Upgrade to King Georges Road to improve safety, reduce congestion, and improve journey times, including widening to three lanes in each direction and removing four right turn movements. The project widens the 1.5km corridor between Stoney Creek Road and Forest Road, providing dedicated turn lanes and concrete median separation.
70-76 Pitt Street Mortdale
Mixed-use development proposal featuring residential apartments above retail/commercial space. Designed to enhance the local shopping strip while providing quality housing options. Includes sustainable design features and community spaces.
Oatley to Como Walkway Upgrade
Upgrade of an approximately 800-metre deteriorating asphalt pathway and shared cycleway connecting Oatley and Como via the heritage-listed Old Como Railway Bridge. Georges River Council received $280,000 from the NSW Government's Get NSW Active program for investigation and detailed design work, which is expected to be completed by mid-2025. The proposed upgrade includes pathway reconstruction, widening, improved lighting on the bridge, safety enhancements including fencing, rest stops with seating, and embankment works. The pathway is located on State Government land, with the bridge owned by Sydney Water. Future construction funding to be determined by the NSW Government through TAHE (Transport Asset Holding Entity) which has confirmed it will provide funds for improvement works. The pathway serves as a popular pedestrian and cycling link across the Georges River, forming part of Greater Sydney's Strategic Cycleway Corridor connecting Georges River and Sutherland Shire communities.
Enterprise Industrial Estate Mortdale
Mortdale's first industrial development in nearly 20 years, featuring 22 warehouse units (115-243sqm with mezzanine), 7 work-store units (71-111sqm, now sold out), and 41 strata storage units (28-120sqm). The boutique industrial estate offers modern spaces with 6-meter clearance, NBN connectivity, 40A 3-phase power, allocated parking, 24/7 access, and security features. Construction commenced with 65% of units already sold, positioned strategically near M5/M8 motorways, Forest Road, and King Georges Road.
Employment
AreaSearch analysis of employment trends sees Mortdale performing better than 90% of local markets assessed across Australia
Mortdale has a highly educated workforce with professional services showing strong representation. The unemployment rate in Mortdale was 2.1% as of December 2025. This is below Greater Sydney's rate of 4.2%.
Employment growth over the past year was estimated at 7.2%, based on AreaSearch aggregation of statistical area data. As of December 2025, 8,078 residents were in work and workforce participation was 79.0%, compared to Greater Sydney's 68.8%. According to Census responses, 49.5% of Mortdale residents worked from home, though Covid-19 lockdown impacts should be considered.
Employment among residents is concentrated in health care & social assistance, professional & technical, and education & training sectors. Construction employment was under-represented at 6.7%, compared to Greater Sydney's 8.6%. Over the 12 months to December 2025, Mortdale's employment increased by 7.2% while labour force increased by 7.3%, with unemployment remaining essentially unchanged. By comparison, Greater Sydney recorded employment growth of 2.2%, labour force growth of 2.3%, and marginal unemployment increase. Jobs and Skills Australia forecasts national employment to expand by 6.6% over five years and 13.7% over ten years. Applying these projections to Mortdale's employment mix suggests local employment should increase by 6.9% over five years and 14.1% over ten years, based on a simple weighting extrapolation for illustrative purposes.
Frequently Asked Questions - Employment
Income
Income analysis reveals strong economic positioning, with the area outperforming 60% of locations assessed nationally by AreaSearch
According to AreaSearch's aggregation of ATO data released on June 30, 2023, Mortdale had a median taxpayer income of $56,193 and an average income of $79,312. Nationally, these figures are high compared to the national median of $60,817 and national average of $83,003. By March 2026, estimated incomes would be approximately $61,992 (median) and $87,497 (average), based on a 10.32% Wage Price Index growth since June 2023. The 2021 Census shows Mortdale's household, family, and personal incomes are at the 66th percentile nationally. Income analysis reveals that 32.8% of Mortdale residents earn between $1,500 and $2,999 weekly, with another 30.1% earning over $3,000. Housing costs consume 16.4% of income, but strong earnings place disposable income at the 64th percentile nationally. Mortdale's SEIFA income ranking places it in the 7th decile.
Frequently Asked Questions - Income
Housing
Mortdale features a more urban dwelling mix with significant apartment living, with above-average rates of outright home ownership
Mortdale's dwelling structure, as per the latest Census, comprised 42.8% houses and 57.2% other dwellings (semi-detached, apartments, 'other' dwellings). In comparison, Sydney metro had 55.9% houses and 44.1% other dwellings. Home ownership in Mortdale was at 30.5%, with the rest of dwellings either mortgaged (32.0%) or rented (37.5%). The median monthly mortgage repayment in Mortdale was $2,286, lower than Sydney metro's average of $2,427. The median weekly rent figure in Mortdale was $420, compared to Sydney metro's $470. Nationally, Mortdale's mortgage repayments were higher at $2,286 compared to the Australian average of $1,863, while rents were substantially above the national figure of $375.
Frequently Asked Questions - Housing
Household Composition
Mortdale has a typical household mix, with a lower-than-average median household size
Family households constitute 70.4% of all households, including 34.9% couples with children, 23.8% couples without children, and 10.3% single parent families. Non-family households comprise the remaining 29.6%, with lone person households at 26.1% and group households at 3.3%. The median household size is 2.6 people, which is smaller than the Greater Sydney average of 2.7.
Frequently Asked Questions - Households
Local Schools & Education
The educational profile of Mortdale exceeds national averages, with above-average qualification levels and academic performance metrics
The area's educational profile is notable regionally with university qualification rates at 38.2% among residents aged 15+, exceeding the Australian average of 30.4% and the NSW rate of 32.2%. Bachelor degrees are most common at 25.6%, followed by postgraduate qualifications (10.3%) and graduate diplomas (2.3%). Vocational credentials are also prominent, with 28.4% of residents aged 15+ holding such qualifications - advanced diplomas at 11.5% and certificates at 16.9%.
Educational participation is high, with 28.6% of residents currently enrolled in formal education, including 8.7% in primary education, 6.7% in tertiary education, and 6.3% pursuing secondary education.
Frequently Asked Questions - Education
Schools Detail
Nearby Services & Amenities
Transport
Transport servicing is high compared to other areas nationally based on assessment of service frequency, route connectivity and accessibility
Mortdale has 43 active public transport stops serving a mix of train and bus routes. These stops are covered by 24 individual routes, offering a total of 5,177 weekly passenger trips. The area's transport accessibility is rated excellent, with residents typically living 158 meters from the nearest stop. Most Mortdale residents commute outward daily. Cars remain the dominant mode of transport at 65%, followed by train at 24% and walking at 5%. Vehicle ownership averages 1.0 per dwelling, below the regional average.
According to the 2021 Census, 49.5% of Mortdale residents work from home, which may be influenced by COVID-19 conditions. Service frequency across all routes averages 739 trips per day, equating to around 120 weekly trips per individual stop.
Frequently Asked Questions - Transport
Transport Stops Detail
Health
Mortdale's residents are extremely healthy with younger cohorts in particular seeing very low prevalence of common health conditions
Analysis of health metrics indicates strong performance throughout Mortdale, based on AreaSearch's assessment.
Mortality rates and chronic condition prevalence were found to be low, particularly among younger cohorts who had a very low prevalence of common health conditions. Private health cover was found to be high, with approximately 58% of the total population (~7,080 people) having it. The most common medical conditions in the area were arthritis and mental health issues, impacting 6.3 and 6.3% of residents respectively. A significant majority, 75.4%, declared themselves completely clear of medical ailments, compared to 74.6% across Greater Sydney. Working-age residents had low chronic condition prevalence. The area has a higher proportion of seniors aged 65 and over, at 18.3% (2,224 people), compared to the 15.5% in Greater Sydney. Health outcomes among seniors were above average but ranked lower nationally than the broader population.
Frequently Asked Questions - Health
Cultural Diversity
Mortdale is among the most culturally diverse areas in the country based on AreaSearch assessment of a range of language and cultural background related metrics
Mortdale's population shows high cultural diversity, with 38.8% born overseas and 42.4% speaking a language other than English at home. Christianity is the predominant religion in Mortdale, accounting for 53.3%. Hinduism is notably higher in Mortdale at 5.9%, compared to Greater Sydney's 5.2%.
Top ancestry groups are English (17.3%), Australian (17.0%), and Other (14.4%). Some ethnic groups have significant differences: Macedonian (3.8% vs regional 0.4%), Croatian (1.6% vs 0.7%), and Chinese (14.2% vs 8.4%) are notably overrepresented in Mortdale.
Frequently Asked Questions - Diversity
Age
Mortdale's population aligns closely with national norms in age terms
The median age in Mortdale is 38 years, close to Greater Sydney's average of 37 and equivalent to Australia's median of 38. Compared to Greater Sydney, Mortdale has a higher percentage of residents aged 65-74 (11.1%) but fewer residents aged 5-14 (9.9%). Between the 2016 and 2021 censuses, the proportion of residents aged 65-74 increased from 8.8% to 11.1%, while those aged 45-54 rose from 13.1% to 14.6%. Conversely, the percentage of residents aged 55-64 decreased from 12.0% to 10.6% and those aged 5-14 dropped from 11.2% to 9.9%. By 2041, Mortdale's age composition is expected to shift notably. The 75-84 age group is projected to grow by 54%, reaching 955 people from 619. Those aged 65 and above are expected to comprise 73% of the population growth. Meanwhile, population declines are projected for those aged 0-4 and 15-24.