Terrey Hills - Duffys Forest

SA2

Greater Sydney / Warringah

 
 
 
 
 
 
 
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Statistical Area (SA2) Boundary Analysis

This analysis uses ABS Statistical Areas Level 2 (SA2) boundaries, which can materially differ from Suburbs and Localities (SAL) even when sharing similar names.

SA2 boundaries are defined by the Australian Bureau of Statistics and are designed to represent communities for statistical reporting (e.g., census and ERP).

Suburbs and Localities (SAL) represent commonly-used suburb/locality names (postal-style areas) and may use different geographic boundaries. For comprehensive analysis, consider reviewing both boundary types if available.

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Sales ActivityProperty Sales Trends in Terrey Hills - Duffys Forest

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The median house price in Terrey Hills - Duffys Forest is $2.33m, with units at $2.40m. House values have moved -2.7% a year compounded over five years.

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DemographicsPopulation Growth in Terrey Hills - Duffys Forest

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Terrey Hills - Duffys Forest has an estimated 3,593 residents, down from 3,786 at the 2021 Census — a change of 193 people, or 5.1%. The population has thinned by an average 1.3% a year over five years, slower than 99% of areas nationally. Density is about 51 people per 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 the analysis conducted by AreaSearch, the population of Terrey Hills - Duffys Forest stands at approximately 3,593 in May 2026. Compared to the 2021 Census count of 3,786 people, this represents a reduction of 193 people (5.1%). This shifting trajectory is calculated from the ABS estimated resident population of 3,593 recorded in June 2025 alongside 7 validated new addresses registered after the Census. Consequently, the local density ratio is 50 persons per square kilometer, indicating a spacious environment for residents. Overseas migration was the primary driver of these population changes, acting as the sole source of positive demographic gains in the recent past.

Projections from ABS and Geoscience Australia, published in 2024 using 2022 as the base year, have been adopted by AreaSearch for each SA2. In instances where these data are unavailable, AreaSearch uses SA2 projections from the NSW State Government released in 2022 using 2021 as the base year. The age cohort growth rates from these datasets are applied to all locations for the period 2032 to 2041. Based on these demographic patterns, future expansion is projected to align with the lower quartile of Australian statistical territories, with the area forecast to add 10 residents by 2041 relative to the latest annual ERP numbers, indicating an overall rise of 0.3% across the 16 years.

Frequently Asked Questions - Population

What is the latest population estimate for the Terrey Hills - Duffys Forest SA2?
Total population for the Terrey Hills - Duffys Forest SA2 was estimated to be approximately 3,593 as at May 26. This is based upon an estimated resident population of 3,593 from the ABS up to June 2025.
How has the population in the Terrey Hills - Duffys Forest SA2 changed since 2021?
The terrey hills - duffys forest sa2 has lost approximately 193 people and shown a 5.10% decrease from the 3,786 people recorded at the 2021 Census period.
What is the population density in the Terrey Hills - Duffys Forest SA2?
The population density in the Terrey Hills - Duffys Forest SA2 is estimated at 50 persons per square kilometer based on the latest population estimate.
How much has the population grown over the past 10 years in the Terrey Hills - Duffys Forest SA2?
Over the past 10 years, the population in the Terrey Hills - Duffys Forest SA2 has shown a compound annual growth rate of -0.5% per annum.
What are the main drivers of population growth in the Terrey Hills - Duffys Forest SA2?
Population growth in the Terrey Hills - Duffys Forest SA2 is driven by: Overseas migration (100.0%), Natural increase (0.0%), Interstate migration (0.0%). The primary driver is Overseas migration, contributing 100.0% of overall population gains.

Residential SupplyHousing Development & Building Approvals in Terrey Hills - Duffys Forest

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28 new dwellings have been approved in Terrey Hills - Duffys Forest over the past five years, an average of 5 a year. That is 1.5 approvals per 1,000 residents. Approvals are currently running at an annualised 2, well below that longer-run average. Figures come from ABS building approvals aggregated to this SA2 boundary and are updated monthly as the ABS releases them.

Detail

Over the past 5 financial years (between FY-21 and FY-25), Terrey Hills - Duffys Forest recorded 28 residential approvals, averaging roughly 5 new dwellings annually, with 2 approvals registered in FY-26 so far. Because of the recent population decline, the incoming housing stock has likely matched local demand, maintaining options for prospective purchasers. The average expected construction cost for these new structures is $1,133,000, which indicates that builders are focusing on premium, upscale housing. Furthermore, commercial approvals totaling $12.3 million this financial year point to steady commercial expansion. In comparison to Greater Sydney, building volume per capita in Terrey Hills - Duffys Forest is approximately half, placing the area in the 18th percentile nationally.

This leads to limited purchasing options for buyers, which supports demand for established homes. The lower rate of activity relative to national figures suggests a mature market and potential planning barriers. Additionally, recent construction consists solely of detached houses, preserving the established low-density layout and prioritizing family-oriented homes for residents wanting larger properties. An estimated 901 people per dwelling approval highlights the quiet pace of local development. Based on the most recent quarterly estimate from AreaSearch, future forecasts suggest Terrey Hills - Duffys Forest will gain 10 residents by 2041. At the current pace of construction, the volume of incoming housing is expected to easily accommodate this demand, ensuring favorable conditions for buyers and potentially facilitating growth beyond these projections.

Frequently Asked Questions - Development

How many dwelling approvals have occurred in the Terrey Hills - Duffys Forest SA2 recently?
Dwelling approval activity in the the Terrey Hills - Duffys Forest SA2 area has seen 9 residential approvals over the past two financial years, based on AreaSearch's SA2 aggregation method. The Terrey Hills - Duffys Forest SA2's current population of 3,593 has been supported by 5 approvals on average over recent years.
How does the Terrey Hills - Duffys Forest SA2's development activity compare to the broader region?
The Terrey Hills - Duffys Forest SA2 has seen 0.15 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 901 people in the Terrey Hills - Duffys Forest SA2, compared to one for every 190 in the broader region.
Is the Terrey Hills - Duffys Forest SA2 keeping up with housing demand?
With the population expected to increase by 10 people by 2041, around 4 new dwellings will be necessary. Recent approval levels appear more than sufficient to meet these forecasts, considering the census average of 3.0 persons per dwelling. This suggests that population growth may exceed trend projections in the coming years, supported by a robust housing supply.
What has been the trend in development approvals over the past five years in the Terrey Hills - Duffys Forest SA2?
Looking at development activity over the past five years, the Terrey Hills - Duffys Forest SA2's approval levels have been significantly below the yearly average of 5, showing a notable downturn in recent development.
How many dwellings will be needed to accommodate future population growth in the Terrey Hills - Duffys Forest SA2?
The population in the Terrey Hills - Duffys Forest SA2 is expected to grow by 10 people by 2041, necessitating approximately 4 new dwellings. This calculation is based on the current census average of 3.0 persons per dwelling in the area.
How does recent development compare to population growth in the Terrey Hills - Duffys Forest SA2?
Over the past five years, the Terrey Hills - Duffys Forest SA2 has seen 28 residential approvals while population has remained stable or declined, indicating potential market oversupply.
Are there opportunities for residential developers in the Terrey Hills - Duffys Forest SA2?
With dwelling approval activity running at an average of 5 approvals per year and a population of 3,593, the market appears to be adequately supplied relative to projected housing demand in recent years, suggesting that developers should have a longer-term approach when considering new projects. With the population expected to increase by 10 people by 2041, around 4 new dwellings will be necessary. Recent approval levels appear more than sufficient to meet these forecasts, considering the census average of 3.0 persons per dwelling. This suggests that population growth may exceed trend projections in the coming years, supported by a robust housing supply.
Approvals Pipeline Development applications near Terrey Hills - Duffys Forest

Development applications around Terrey Hills - Duffys Forest

Development approvals is a new addition to AreaSearch. We’re actively expanding council coverage and refining the dataset — details and statuses for some councils may be partial. Check back regularly for the latest pipeline.
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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 Terrey Hills - Duffys Forest

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AreaSearch tracks 2 current infrastructure and development projects inside Terrey Hills - Duffys Forest, worth an estimated $500 million. A further 75 sit in the immediately surrounding suburbs, taking the tracked pipeline within reach of the area to $8.9 billion. 16 are already under construction and 24 are due for completion within three years. The pipeline spans residential development, transport & logistics and sports & recreation. 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

Changes to local infrastructure, planning initiatives, and major developments have a significant impact on local performance. AreaSearch has identified 15 projects expected to influence the area. Key works include the Mona Vale Road West Upgrade (McCarrs Creek Road to Powder Works Road), Connecting Northern Beaches - Cycling & Walking Paths, the St Ives Showground Main Carpark Upgrade, and the Belrose North Residential Release, with the following list detailing the most relevant projects.

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Frequently Asked Questions - Infrastructure

What are some of the major infrastructure and planning changes likely to influence the Terrey Hills - Duffys Forest SA2?
Key infrastructure and planning changes likely to influence the Terrey Hills - Duffys Forest SA2 include: Mona Vale Road West Upgrade (McCarrs Creek Road to Powder Works Road) (Planning); Connecting Northern Beaches - Cycling & Walking Paths (Construction); St Ives Showground Main Carpark Upgrade (Construction); Belrose North Residential Release (Planning); and Bedes Forest Upgrade (Planning). These projects represent significant developments that will shape the area's future infrastructure landscape.
What types of infrastructure projects are impacting the Terrey Hills - Duffys Forest SA2?
Infrastructure development impacting the Terrey Hills - Duffys Forest SA2 spans multiple sectors including Transport & Logistics, Residential Development, and Sports & Recreation, among others.
What is the scale of infrastructure investment impacting the Terrey Hills - Duffys Forest SA2?
Infrastructure investment analysis indicates substantial capital deployment exceeding $9.7 billion in projects that will impact the extended area.
How does the Terrey Hills - Duffys Forest SA2's infrastructure development compare to other areas?
The Terrey Hills - Duffys Forest SA2 shows moderate infrastructure development relative to national averages, with opportunities for future growth and investment.
Mona Vale Road West Upgrade
Category: Transport & Logistics
Stage: Planning | Est. Comp: 2029
Source / Links: Link 1   

A major $500M road infrastructure upgrade converting 3.4 kilometres of Mona Vale Road from two to four lanes between Terrey Hills and Ingleside, linking St Ives and Sydney's North Shore to the Northern Beaches. The project includes signalised intersections, dedicated turning and climbing lanes, fauna overpass bridge, and shared pedestrian/cycle paths.

Transport & Logistics

Connecting Northern Beaches - Cycling & Walking Paths
Category: Sports & Recreation
Stage: Construction | Est. Comp: 0
Source / Links: Link 1   Link 2  

14km of new off-road shared paths, new Palm Beach Walkway, shared pathway behind Mona Vale golf course, improved connections between town centres and beaches. Includes bridge upgrades, safety improvements, and wayfinding signage across multiple locations.

Sports & Recreation

Mona Vale Road West Upgrade (McCarrs Creek Road to Powder Works Road)
Category: Transport & Logistics
Stage: Planning | Est. Comp: 2029
Source / Links: Link 1   Link 2  

Upgrade of 3.4 km of Mona Vale Road from two lanes to four lanes between McCarrs Creek Road and Powder Works Road. The project includes a new signalised intersection at Kimbriki Road, a relocated Tumburra Street intersection, a new local road connection, shared walking and cycling path, fauna bridge and wildlife underpasses. During 2025-2026 TfNSW progressed detailed design, investigations and procurement activities. The project is fully funded with construction targeted to commence in 2028 following completion of detailed design and award of the construction contract.

Transport & Logistics

Belrose North Residential Release
Category: Communities
Stage: Planning | Est. Comp: 0
Source / Links: Link 1   Link 2  

Mirvac's proposed masterplanned community in the Belrose North precinct, envisaged to deliver approximately 250 new homes including townhomes, terraces and apartments on land around Wyatt Avenue and Ralston Avenue. The site forms part of the Oxford Falls Valley and Belrose North deferred lands area. The earlier standalone planning proposal to rezone Lot 1 DP 1139826 at Ralston Avenue (PP-2021-470) was refused and is not proceeding. Rezoning of the broader deferred lands is now being addressed through the new Northern Beaches comprehensive LEP, which received a Gateway Determination in October 2025 and is being revised for public exhibition in 2026, with gazettal not expected before 2027.

Communities

Belrose Village Green
Category: Retail
Stage: Construction | Est. Comp: 2026
Source / Links: Link 1   Link 2  

Belrose Village Green is a new neighbourhood retail centre on Forest Way. The development will deliver a full line supermarket (Coles), specialty shops, medical and allied health services, food and beverage outlets, and a childcare facility. The project features a modern village style design aimed at serving the surrounding Northern Beaches community with upgraded pedestrian access and high-quality amenities.

Retail

Davidson Park Environmental Restoration
Category: Environmental & Disaster Management
Stage: Under Assessment | Est. Comp: 2026
Source / Links: Link 1   

Comprehensive environmental restoration project focused on native habitat rehabilitation, erosion control, and biodiversity enhancement in Davidson Park.

Environmental & Disaster Management

St Ives Indoor Sports Centre
Category: Sports & Recreation
Stage: Construction | Est. Comp: 2026
Source / Links: Link 1   Link 2  

Two storey indoor sports complex at St Ives High School delivering two additional courts (to total four), a multipurpose room, male and female amenities, cafe and associated works including underground parking and landscaping. Stage 1 opened in early 2021. Stage 2 is being delivered by School Infrastructure NSW on behalf of Ku-ring-gai Council.

Sports & Recreation

Patyegarang (Lizard Rock) Housing Development
Category: Residential Development
Stage: Proposed | Est. Comp: 0
Source / Links: Link 1   Link 2  

The Patyegarang project involves the development of a land asset at Morgan Road, Belrose, by the Metropolitan Local Aboriginal Land Council (MLALC), aiming to transform it into economic, social, and cultural opportunities for Aboriginal people. The development will include a sustainable, resilient, and affordable community designed to respect the natural environment, with a range of lot sizes to retain rocky outcrops, existing trees, and landscape features. The masterplan focuses on self-determination and Caring for Country, including restoration of natural habitat, watercourses, and ecological corridors, as well as conservation and preservation of significant Aboriginal rock carvings.Approximately 19.8 ha of the 71-ha site will be preserved and restored as conservation areas, with formalised walking and cycling tracks to honor and protect existing registered Aboriginal archaeological sites. Includes a cultural community centre and up to 450 homes.

Residential Development

Jobs & IndustryEmployment Trends in Terrey Hills - Duffys Forest

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1,883 residents of Terrey Hills - Duffys Forest are employed, from a labour force of 1,956. Unemployment sits at 3.7%, with participation at 64.1%. Weighted for its industry mix, the area's sectors are forecast to grow about 6.9% nationally over five years. That reflects industry composition only and makes no allowance for local population growth. The working-day population is estimated at 3,905, about 109% of the resident population, so the area draws in more workers than it sends out. Unemployment and labour force come from ABS Small Area Labour Markets, updated quarterly; the industry and occupation profile is from the 2021 Census.

Detail

The workforce in Terrey Hills - Duffys Forest is highly educated, featuring a strong concentration of professionals, a low unemployment rate of 3.7%, and an estimated job growth rate of 1.0% over the prior year. In March 2026, there were 1,883 employed residents, with an unemployment rate 0.4% below the Greater Sydney average of 4.1%. Workforce participation is slightly low at 64.1% compared to 69.1% across Greater Sydney. Census responses indicated that a substantial 46.6% of residents worked from home, though this figure may reflect the influence of pandemic restrictions.

The primary employment sectors for local residents are construction, health care & social assistance, and professional & technical fields. The area exhibits a high concentration in construction, with its employment share reaching 1.5 times the regional average. Conversely, public administration & safety has a small footprint, accounting for 3.3% of jobs compared to 5.7% regionally. A ratio of 0.7 workers per resident at the time of the Census indicates a higher than average availability of local jobs. According to AreaSearch's evaluation of SALM and ABS statistics, employment rose by 1.0% and the labor force expanded by 1.5% during the 12 months ending March 2026, leading to a rise in unemployment of 0.5 percentage points. In contrast, Greater Sydney experienced employment growth of 1.9% and labor force growth of 1.9%, with a slight decline in unemployment. Additional guidance on future demand in Terrey Hills - Duffys Forest is available via national employment forecasts from Jobs and Skills Australia issued in May-25. These five and ten-year forecasts have been combined with the local employment structure to project growth trends. While national employment is projected to grow by 6.6% over five years and 13.7% over ten years, trends vary considerably by sector. Projecting these industry trends onto the job profile of Terrey Hills - Duffys Forest suggests local jobs should rise by 6.9% over five years and 13.9% over ten years, utilizing a basic weighted calculation for demonstration purposes that excludes local population forecasts.

Frequently Asked Questions - Employment

What is the employment situation in the Terrey Hills - Duffys Forest SA2?
As of March 2026, the Terrey Hills - Duffys Forest SA2 has approximately 1,883 employed residents with an unemployment rate of 3.7%. This healthy unemployment rate suggests a well-functioning labour market. Employment indicators are below the national average, suggesting room for improvement.
How does the Terrey Hills - Duffys Forest SA2's unemployment rate compare to the broader region?
As of March 2026, the unemployment rate in the Terrey Hills - Duffys Forest SA2 stands at 3.7%, which is broadly in line with Greater Sydney's rate of 4.1%. For comparison, the national unemployment rate is 4.2%.
What are the major employment sectors in the Terrey Hills - Duffys Forest SA2?
The employment landscape in the Terrey Hills - Duffys Forest SA2 is dominated by several key sectors. The largest employers are construction (13.1% of employment), health care & social assistance (12.4%), and professional & technical (12.3%). Other significant employers include education & training and retail trade.
How has employment changed recently in the Terrey Hills - Duffys Forest SA2?
Over the past year to March 2026, the Terrey Hills - Duffys Forest SA2 has experienced employment growth, with total employment increasing while the labour force increased. As a result, the unemployment rate has rise. By comparison, Greater Sydney saw employment increased and its unemployment rate dropped.
What is the workforce participation rate in the Terrey Hills - Duffys Forest SA2?
The workforce participation rate in the Terrey Hills - Duffys Forest SA2 is 64.1%, 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%, showing similar workforce dynamics to the broader region.
Which industries are over-represented in the Terrey Hills - Duffys Forest SA2's employment market?
The terrey hills - duffys forest sa2 shows notable specialization in construction, which employs 13.1% of the local workforce compared to 8.6% regionally. This concentration suggests the area has developed competitive advantages in this sector.
What are the employment growth prospects for the Terrey Hills - Duffys Forest SA2?
Based on Jobs and Skills Australia projections applied to the Terrey Hills - Duffys Forest SA2's industry mix, employment is expected to grow by 6.9% over the next five years and 13.9% over ten years. This exceeds the national forecast of 6.6% over five years, suggesting the area's industry composition is well-positioned for future growth. Steady growth is anticipated across multiple sectors, providing diverse employment opportunities.
How does the job market in the Terrey Hills - Duffys Forest SA2 compare nationally?
The terrey hills - duffys forest sa2's employment market shows below-average performance in national comparisons. While employment opportunities exist, the area faces more challenges than many other regions. 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 Terrey Hills - Duffys Forest SA2?
Skilled workers will find excellent opportunities in the Terrey Hills - Duffys Forest SA2, with knowledge-intensive sectors comprising 42.4% of local employment. Key sectors for skilled workers include health care & social assistance (12.4%), professional & technical (12.3%), and education & training (10.3%). With projected employment growth of 6.9% over five years, demand for skilled workers is expected to remain strong.

EarningsHousehold Income in Terrey Hills - Duffys Forest

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Median household income in Terrey Hills - Duffys Forest is $2,899 a week (about $151,000 a year), with median personal income at $1,010 a week. ATO records put median taxable income at $65,810 a year against an average of $133,599. The average runs 103% above the median, a wider spread than most areas and a sign of a concentrated group of high earners. 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

Aggregated ATO data from AreaSearch for financial year 2023 ranks the Terrey Hills - Duffys Forest SA2 in the top percentile nationally for income. Taxpayers in the area recorded a median income of $65,810 and an average income of $133,599, compared to median and average figures of $60,817 and $83,003 in Greater Sydney. Factoring in Wage Price Index growth of 10.32% since financial year 2023, current estimates for March 2026 are approximately $72,602 for the median and $147,386 for the average. Census data places local weekly household incomes in the 96th percentile at $2,899.

The largest income group comprises 35.2% of residents (1,264 people) earning more than $4000 weekly, which contrasts with Greater Sydney where the $1,500 - 2,999 category is largest at 30.9%. High-income earners are prominent, with 48.4% receiving over $3,000 weekly, indicating substantial financial capacity. Residents keep 87.2% of their income after accounting for housing costs, and the area is positioned in the 9th decile on the SEIFA income index.

Frequently Asked Questions - Income

What is the median taxable income in the Terrey Hills - Duffys Forest SA2?
Based on Wage Price Index adjustments to March 2026, the estimated median taxable income in the Terrey Hills - Duffys Forest SA2 is approximately $72,602. The official ATO data from FY-23 recorded a median of $65,810.
What is the average taxable income in the Terrey Hills - Duffys Forest SA2?
Based on Wage Price Index adjustments to March 2026, the estimated average taxable income in the Terrey Hills - Duffys Forest SA2 is approximately $147,386. The official ATO data from FY-23 recorded an average of $133,599.
How does the median taxable income in the Terrey Hills - Duffys Forest SA2 compare to the region?
Based on Wage Price Index adjustments to March 2026, the estimated median taxable income in the Terrey Hills - Duffys Forest SA2 is approximately $72,602 compared to $67,093 in Greater Sydney. The official ATO data from FY-23 shows $65,810 and $60,817 respectively.
How does the average taxable income in the Terrey Hills - Duffys Forest SA2 compare to the region?
Based on Wage Price Index adjustments to March 2026, the estimated average taxable income in the Terrey Hills - Duffys Forest SA2 is approximately $147,386 compared to $91,569 in Greater Sydney. The official ATO data from FY-23 shows $133,599 and $83,003 respectively.
What are the main income cohorts in the Terrey Hills - Duffys Forest SA2 according to the 2021 Census?
As per the 2021 Census, the income bracket containing the largest proportion (~35.2% / 1,264 persons) of the Terrey Hills - Duffys Forest SA2's population is the $4000+ cohort.
How do the main income cohorts in the Terrey Hills - Duffys Forest SA2 compare to the region?
The largest income cohort in the Terrey Hills - Duffys Forest SA2 is the $4000+ group, representing about 35.2% 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 Terrey Hills - Duffys Forest SA2 according to the 2021 Census?
The 2021 Census data indicates that the median household income in the Terrey Hills - Duffys Forest SA2 is $2,899/wk.
What is the median family income in the Terrey Hills - Duffys Forest SA2 according to the 2021 Census?
According to the 2021 Census, the median family income in the Terrey Hills - Duffys Forest SA2 is $3,178/wk.
What is the median personal income in the Terrey Hills - Duffys Forest SA2 according to the 2021 Census?
The 2021 Census shows that the median personal income in the Terrey Hills - Duffys Forest SA2 is $1,010/wk.
How does the Terrey Hills - Duffys Forest SA2's income rank nationally?
The Terrey Hills - Duffys Forest SA2 shows a median taxpayer income of $65,810 and an average of $133,599 according to the latest postcode level ATO data aggregated by AreaSearch for FY-23. This is exceptionally high nationally, 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 $72,602 (median) and $147,386 (average) as of March 2026.
What is the disposable income in the Terrey Hills - Duffys Forest SA2?
The estimated disposable income in the Terrey Hills - Duffys Forest SA2 is $10,954 per year according to AreaSearch analysis.
How does the Terrey Hills - Duffys Forest SA2's disposable income compare to the region?
The terrey hills - duffys forest sa2's disposable income is $10,954 compared to $7,412 for Greater Sydney, based on AreaSearch analysis.

Housing StockHousing & Dwellings in Terrey Hills - Duffys Forest

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Terrey Hills - Duffys Forest had 1,196 occupied dwellings at the 2021 Census, 88% detached houses and 6% apartments. 37% are owned with a mortgage, 16% rented and 47% owned outright. At that Census the median rent was $610 a week and the median mortgage repayment $3,200 a month, a total housing cost higher than 87% of areas nationally. Rent absorbs 21.0% of household income here and mortgage repayments 25.5%. Dwelling stock, tenure and housing costs are 2021 Census measures — the only source that counts dwellings at this boundary size.

Detail

According to the latest Census, the housing mix in Terrey Hills - Duffys Forest consisted of 88.0% houses and 12.1% other options like semi-detached dwellings and apartments, compared to 55.9% houses and 44.1% other options in the Sydney metro area. Home ownership rates were high at 47.0%, with the remaining properties being mortgaged (37.2%) or rented (15.8%). The median mortgage payment in the area was $3,200 monthly, and the median rent was $610 weekly, compared to Sydney metro averages of $2,427 and $470. On a national scale, mortgage costs in Terrey Hills - Duffys Forest are higher than the Australian average of $1,863, and rent prices are above the national benchmark of $375.

Frequently Asked Questions - Housing

What percentage of homes are owned vs rented in the Terrey Hills - Duffys Forest SA2?
In the Terrey Hills - Duffys Forest SA2, 47.0% of homes are owned outright, 37.2% are owned with a mortgage, and 15.8% are rented.
What percentage of dwellings in the Terrey Hills - Duffys Forest SA2 are houses?
According to the latest data, 88.0% of dwellings in the Terrey Hills - Duffys Forest SA2 are houses.
What percentage of dwellings in the Terrey Hills - Duffys Forest SA2 are apartments or units?
In the Terrey Hills - Duffys Forest SA2, 5.5% of dwellings are apartments or units, with an additional 3.3% being semi-detached dwellings.
What is the level of outright home ownership in the Terrey Hills - Duffys Forest SA2?
Outright home ownership in the Terrey Hills - Duffys Forest SA2 stands at 47.0%, compared to 28.7% in Greater Sydney.
What is the median monthly mortgage repayment in the Terrey Hills - Duffys Forest SA2?
The median monthly mortgage repayment in the Terrey Hills - Duffys Forest SA2 is $3,200, compared to $2,427 in Greater Sydney.
What is the median weekly rent in the Terrey Hills - Duffys Forest SA2?
The median weekly rent in the Terrey Hills - Duffys Forest SA2 is $610, compared to $470 in Greater Sydney.
What is the distribution of rental prices in the Terrey Hills - Duffys Forest SA2?
In the Terrey Hills - Duffys Forest SA2, 7.8% of rentals are $0-149/week, 8.9% are $150-349/week, 35.2% are $350-649/week, 21.2% are $650-949/week, and 26.8% are $950+/week.
What is the average monthly housing cost in the Terrey Hills - Duffys Forest SA2?
The aggregate monthly housing cost in the Terrey Hills - Duffys Forest SA2 is $1,608, which represents the average monthly cost across all housing types.
What percentage of income do residents spend on housing in the Terrey Hills - Duffys Forest SA2?
In the Terrey Hills - Duffys Forest SA2, households with mortgages typically spend 25.5% of their income on mortgage repayments, while renters spend 21.0% of their income on rent.
How crowded are homes in the Terrey Hills - Duffys Forest SA2?
The average persons per bedroom ratio in the Terrey Hills - Duffys Forest SA2 is 0.8, indicating the level of household density.
How does housing affordability in the Terrey Hills - Duffys Forest SA2 compare to the region?
Housing affordability in the Terrey Hills - Duffys Forest SA2 shows mortgage holders spending 25.5% of income on repayments (vs 27.0% regionally), while renters spend 21.0% of income on rent (vs 22.6% regionally).
What types of dwellings are most common in the Terrey Hills - Duffys Forest SA2?
The dwelling mix in the Terrey Hills - Duffys Forest SA2 consists of 88.0% detached houses, 3.3% semi-detached dwellings, 5.5% apartments, and 3.3% other dwelling types.
What is the weighted average housing cost based on tenure mix in the Terrey Hills - Duffys Forest SA2?
Factoring in the ownership distribution, the weighted average monthly housing cost is approximately $1,608. This accounts for outright owners paying no housing costs, mortgage holders paying $3,200/month, and renters paying $2,641/month.
How affordable is housing in the Terrey Hills - Duffys Forest SA2 relative to local incomes?
Housing in Terrey Hills - Duffys Forest consumes approximately 12.8% of median household income ($12,553 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 Terrey Hills - Duffys Forest SA2?
Development activity remains minimal in this area with fewer than 5 recent applications recorded.

HouseholdsHousehold Composition in Terrey Hills - Duffys Forest

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Terrey Hills - Duffys Forest counted 1,196 households at the 2021 Census, averaging 3.0 people each. 45% are couples with children, more than in 89% of areas nationally, against 31% couples without children. 15% 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 83.2%, consisting of couples with children at 45.2%, couples without children at 30.6%, and single parent households at 6.8%. Non-family living arrangements account for the remaining 16.8%, with single person households representing 15.2% and group households making up 1.9%. The median household size is 3.0 people, exceeding the Greater Sydney average of 2.7.

Frequently Asked Questions - Households

How many households are in the Terrey Hills - Duffys Forest SA2?
As of the 2021 Census, the Terrey Hills - Duffys Forest SA2 had 1,196 households. Based on population growth patterns, this has decreased by approximately 5.1% to an estimated 1,135 households today.
What is the typical household size?
The median household size in the Terrey Hills - Duffys Forest SA2 is 3.0 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 83.2% of all households. The remaining households consist of lone person households (15.2%), group households (1.9%), and other household types (0.0%).
How are families structured in the area?
Among the 995 family households, 45.2% are couples with children, 30.6% are couples without children at home, and 6.8% are single parent families. This mix shapes local demand for schools, family services, and housing types.
How does the Terrey Hills - Duffys Forest SA2 compare to regional household patterns?
Compared to Greater Sydney, the Terrey Hills - Duffys Forest SA2 shows distinct household patterns. Family households are notably over-represented at 83.2% (versus 72.6% regionally). Conversely, lone person households are under-represented at 15.2% compared to the regional 23.2%. This family-oriented profile influences local demand for family homes, schools, and children's services.
What is the average family size?
Families in the Terrey Hills - Duffys Forest SA2 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 Terrey Hills - Duffys Forest SA2?
Marriage patterns reveal 58.4% of the adult population are currently married, while 28.2% 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 15.2% of all households in the Terrey Hills - Duffys Forest SA2, notably lower 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 1.9% 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 Terrey Hills - Duffys Forest

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33.8% of adults in Terrey Hills - Duffys Forest hold a university qualification, including 23.3% with a bachelor degree and 7.3% with postgraduate qualifications, higher than 86% of areas nationally. A further 22.0% hold a vocational qualification. 7 schools serve the area, with 2,138 enrolment places and an average ICSEA of 1,094 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 proportion of residents with tertiary qualifications in Terrey Hills - Duffys Forest is lower than regional figures, with 33.8% of residents aged 15+ holding a university degree compared to 41.5% in the SA4 region, suggesting opportunities for further academic and professional training. Bachelor degrees are held by 23.3% of residents, followed by postgraduate qualifications at 7.3% and graduate diplomas at 3.2%. Technical and vocational credentials are common, with 34.9% of residents aged 15+ holding qualifications such as advanced diplomas (12.9%) or certificates (22.0%). A high proportion of the population is engaged in education, with 28.6% of residents enrolled in study.

This group includes 10.0% in primary schools, 8.9% in secondary schools, and 4.4% enrolled in tertiary programs.

Frequently Asked Questions - Education

What percentage of people in the Terrey Hills - Duffys Forest SA2 have university qualifications?
33.8% of people aged 15 and over in the Terrey Hills - Duffys Forest SA2 have university qualifications, compared to 38.0% in the broader region.
What percentage of people in the Terrey Hills - Duffys Forest SA2 have no formal qualifications?
31.2% of people aged 15 and over in the Terrey Hills - Duffys Forest SA2 have no formal qualifications, compared to 34.2% regionally.
How does the Terrey Hills - Duffys Forest SA2's education level compare to national averages?
The terrey hills - duffys forest sa2 ranks in the 86th percentile nationally for education based on AreaSearch's analysis of qualification and performance metrics.
What types of qualifications are most common in the Terrey Hills - Duffys Forest SA2?
The most common qualifications in the Terrey Hills - Duffys Forest SA2 are: Bachelor Degree (23.3%), Certificate (22.0%), Advanced Diploma (12.9%).
What proportion of the Terrey Hills - Duffys Forest SA2's population is currently attending educational institutions?
28.6% of the population in the Terrey Hills - Duffys Forest SA2 is currently engaged in formal education, with 10.0% in primary school, 8.9% in secondary school, 4.4% at university.
What is the ICSEA score for schools in the Terrey Hills - Duffys Forest SA2?
The average ICSEA (Index of Community Socio-Educational Advantage) score for schools in the Terrey Hills - Duffys Forest SA2 is 1094, indicating average socio-educational advantage (national average is 1000).
How many schools are located within the Terrey Hills - Duffys Forest SA2?
There are 7 schools within the Terrey Hills - Duffys Forest SA2, with a combined enrollment of approximately 2,138 students.
What types of schools are available in the Terrey Hills - Duffys Forest SA2?
The terrey hills - duffys forest sa2 includes 5 primary schools, 2 combined schools.

Schools Detail

AmenitiesServices & Amenities in Terrey Hills - Duffys Forest

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Getting AroundTransport & Commuting in Terrey Hills - Duffys Forest

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Public transport in Terrey Hills - Duffys Forest reaches 66 stops on 74 routes, timetabled for about 2,100 services a week. The typical home sits about 370 m from its nearest stop. Buses carry the largest share of public transport commuters. Households keep an average of 2.1 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

Public transport options in Terrey Hills - Duffys Forest include 66 stops serviced by buses. There are 74 distinct routes operating across these stops, generating 2,089 passenger journeys weekly. Accessibility is rated as good, with residents living an average of 374 meters from a transit point. Given the residential nature of the area, most workers commute out of the district, with cars being the primary mode of travel at 91% and walking at 5%. Households average 2.1 vehicles, which is above the regional average. A high proportion of residents, 46.6%, worked from home according to the 2021 Census, which may have been influenced by COVID-19 rules.

Across all active transit routes, services run at an average frequency of 298 trips daily, representing roughly 31 weekly journeys for each individual transport stop.

Frequently Asked Questions - Transport

How many public transport stops are in Terrey Hills - Duffys Forest?
There are 66 public transport stops within the Terrey Hills - Duffys Forest SA2.
How frequent are the transport services in Terrey Hills - Duffys Forest?
the Terrey Hills - Duffys Forest SA2 has 2,089 weekly trips across 74 routes, averaging 298 trips per day.
How far are residents from public transport in Terrey Hills - Duffys Forest?
On average, residential properties are 374 meters from the nearest transport stop.

Transport Stops Detail

HealthcareHealth Services in Terrey Hills - Duffys Forest

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69.9% of residents in Terrey Hills - Duffys Forest report no long-term health condition, a healthier profile than 81% of areas nationally. 6.0% need daily assistance with core activities, and 81.5% hold private health cover. The standardised death rate runs at 3.5 per 1,000 residents. Health conditions, assistance needs and insurance are 2021 Census measures; the death rate comes from current ABS releases.

Detail

Based on AreaSearch's evaluation of mortality data and chronic illness rates, Terrey Hills - Duffys Forest exhibits excellent health profiles, with younger demographics showing a low incidence of common medical conditions. Private health insurance coverage is high, with approximately 82% of the population (2,928 people) covered, compared to 59.9% in Greater Sydney and a national average of 55.7%. The most frequent health conditions reported by local residents are arthritis and mental health challenges, affecting 7.9 and 6.9% of the population, respectively. Additionally, 69.9% of residents reported having no long-term health conditions, compared to 74.6% in Greater Sydney.

The population under the age of 65 exhibits favorable health statistics. Residents aged 65 and older account for 26.3% of the community (946 people), which is higher than the Greater Sydney average of 15.5%. While health outcomes for these older residents are above average, they rank lower nationally than the overall local population.

Frequently Asked Questions - Health

How many people in the Terrey Hills - Duffys Forest SA2 have private health insurance?
Around 81.5% of people in the Terrey Hills - Duffys Forest SA2 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 Terrey Hills - Duffys Forest SA2?
In the Terrey Hills - Duffys Forest SA2, 6.0% 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 Terrey Hills - Duffys Forest SA2?
6.3% of people in the Terrey Hills - Duffys Forest SA2 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 Terrey Hills - Duffys Forest SA2?
Diabetes affects 3.5% of the the Terrey Hills - Duffys Forest SA2 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 Terrey Hills - Duffys Forest SA2?
4.8% of people in the Terrey Hills - Duffys Forest SA2 have heart disease. Across the region of Greater Sydney, 3.2% of the population is affected by heart disease.
How does the Terrey Hills - Duffys Forest SA2 compare to the region in terms of overall private health coverage?
In the Terrey Hills - Duffys Forest SA2, 81.5% 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 Terrey Hills - Duffys Forest

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Terrey Hills - Duffys Forest is largely Australian-born, at 76.6% of residents, with 9.6% speaking a language other than English at home. The largest reported ancestries are English (31.0%) and Australian (24.8%). Ancestry, language and country of birth are counted only by the Census, so these are 2021 figures.

Detail

Terrey Hills - Duffys Forest displays a higher level of cultural diversity than average, with 9.6% of residents speaking a language other than English at home and 23.4% born overseas. The most common religious affiliation is Christianity, representing 54.1% of the population. The most prominent statistical overrepresentation is observed in Judaism, which accounts for 0.6% of local residents, compared to 0.8% across Greater Sydney. Regarding ancestral background, the top three heritages in Terrey Hills - Duffys Forest are English at 31.0% (compared to the regional average of 19.0%), Australian at 24.8% (compared to the regional average of 17.8%), and Irish at 8.7%.

Notable demographic differences exist for other ethnicities, with South Australian backgrounds representing 1.6% of the population (compared to 0.5% regionally), Hungarian at 0.5% (compared to 0.3%), and Russian at 0.7% (compared to 0.4%).

Frequently Asked Questions - Diversity

What is the level of cultural diversity in the Terrey Hills - Duffys Forest SA2?
Terrey Hills - Duffys Forest was found to be above average in terms of cultural diversity, with 9.6% of its population speaking a language other than English at home and 23.4% born overseas.
What is the most common religion in the Terrey Hills - Duffys Forest SA2?
The main religion in Terrey Hills - Duffys Forest was found to be Christianity, which makes up 54.1% of people in Terrey Hills - Duffys Forest. However, the most apparent overrepresentation was in Judaism, which comprises 0.6% of the population, compared to 0.8% across Greater Sydney.
What are the top countries of origin in the Terrey Hills - Duffys Forest SA2?
In terms of ancestry (country of birth of parents), the top three represented groups in Terrey Hills - Duffys Forest are English, comprising 31.0% of the population, which is substantially higher than the regional average of 19.0%, Australian, comprising 24.8% of the population, which is substantially higher than the regional average of 17.8%, and Irish, comprising 8.7% of the population. Additionally, there are notable divergences in the representation of certain other ethnic groups: South African is notably overrepresented at 1.6% of Terrey Hills - Duffys Forest (vs 0.5% regionally), Hungarian at 0.5% (vs 0.3%) and Russian at 0.7% (vs 0.4%).
How does the percentage of people born overseas compare to the regional average?
23.4% of the the Terrey Hills - Duffys Forest SA2 population was born overseas, compared to 40.5% regionally.
What percentage of the the Terrey Hills - Duffys Forest SA2 population speaks a language other than English at home?
9.6% of the population in the Terrey Hills - Duffys Forest SA2 speaks a language other than English at home, compared to 39.5% in the wider region.
How many people in the Terrey Hills - Duffys Forest SA2 identify as Australian Aboriginal?
0.3% of the the Terrey Hills - Duffys Forest SA2 population identifies as Australian Aboriginal, compared to 1.3% in the region.
What is the citizenship status of the population in the Terrey Hills - Duffys Forest SA2?
92.3% of the the Terrey Hills - Duffys Forest SA2 population holds citizenship, compared to 80.8% in the wider region.

Age StructureAge Profile of Terrey Hills - Duffys Forest

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The median resident of Terrey Hills - Duffys Forest is 47, older than 84% of areas nationally. 22.1% 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

The median age in Terrey Hills - Duffys Forest is 47 years, which is higher than the Greater Sydney average of 37 and the national average of 38. The 75 - 84 age cohort is well represented at 10.9% of the population compared to Greater Sydney, while the 25 - 34 cohort is lower at 6.4%. Since the 2021 Census, the 15 to 24 age bracket has increased from 12.6% to 15.7% and the 75 to 84 cohort rose from 8.1% to 10.9%. Conversely, the 45 to 54 cohort decreased from 16.0% to 14.0% and the 35 to 44 age bracket fell from 9.8% to 7.9%.

Demographic models project significant shifts in the age structure by 2041, with the 75 to 84 cohort expected to grow by 34%, adding 134 residents to reach 528. Older residents aged 65 and over will account for 100% of the population growth, highlighting aging trends, while declines are projected for the 25 to 34 and 0 to 4 age groups.

Frequently Asked Questions - Age

What is the median age in the Terrey Hills - Duffys Forest SA2?
According to the latest data, the median age in the Terrey Hills - Duffys Forest SA2 is 47 years.
How does the Terrey Hills - Duffys Forest SA2's median age compare to broader areas?
At 47 years, Terrey Hills - Duffys Forest is 10 years older than the Greater Sydney average (37 years) and 9 years older than the national average (38 years).
What age groups are over-represented in the Terrey Hills - Duffys Forest SA2?
The most over-represented age group in the Terrey Hills - Duffys Forest SA2 compared to the Greater Sydney region is the 75 - 84 group, making up 10.9% of the population.
What age groups are under-represented in the Terrey Hills - Duffys Forest SA2?
The most under-represented age group in the Terrey Hills - Duffys Forest SA2 compared to the Greater Sydney region is the 25 - 34 group, making up 6.4% of the population.
Are there age groups with notable population variances?
Yes, certain age groups in the Terrey Hills - Duffys Forest SA2 show significant variance compared to the Greater Sydney region. The most over-represented age groups are 75-84 year-olds (10.9% vs 5.3%) and 65-74 year-olds (13.0% vs 8.1%). The most under-represented age groups are 25-34 year-olds (6.4% vs 16.1%) and 35-44 year-olds (7.9% vs 15.3%).
What is the percentage of children (0-14 years) in the Terrey Hills - Duffys Forest SA2?
The percentage of children aged 0-14 years in the Terrey Hills - Duffys Forest SA2 is 15.1%.
What is the percentage of older people (65+ years) in the Terrey Hills - Duffys Forest SA2?
The percentage of people aged 65 and over in the Terrey Hills - Duffys Forest SA2 is 26.3%.

Data & MethodBoundaries, Sources & Method for Terrey Hills - Duffys Forest

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 SA2 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 Aug 2026 this month all 2 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 Aug 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 — 7 validated new addresses here. The headline figure is therefore a current estimate for May 2026, not a 2021 count (3,786 at the 2021 Census → 3,593 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 (122031432). QuickStats reports 2021 only — the figures on this page are more current wherever the ledger shows a later date.

Common questions about this page

Why can the Terrey Hills - Duffys Forest SA2 boundary differ from the suburb boundary?
This page uses ABS Statistical Area Level 2 (SA2) boundaries for statistical reporting (e.g., census and ERP). SA2 areas can differ materially from Suburbs and Localities (SAL) boundaries, even when they share similar names, because they are defined for different purposes and often use different geographic boundaries.
Where does the data on this Terrey Hills - Duffys Forest 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 Terrey Hills - Duffys Forest 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 (Aug 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.

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