Castlecrag

Suburb (SAL)

Greater Sydney / Chatswood - Lane Cove

 
 
 
 
 
 
 
Data Sources ABSValuer GeneralRental BoardACARA Newest Aug 2026 · Refreshed ABS QuickStats SAL10848 How we calculate this
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Suburb (SAL) Boundary Analysis

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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Sales ActivityProperty Sales Trends in Castlecrag

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The median house price in Castlecrag is $4.59m. House values have moved 3.3% a year compounded over five years.

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DemographicsPopulation Growth in Castlecrag

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Castlecrag has an estimated 3,189 residents, up from 2,965 at the 2021 Census — a change of 224 people, or 7.6%. Growth has averaged 0.9% a year over five years. Overseas migration accounts for 100.0% of that increase. That puts 2,112 residents on each 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

Evaluating demographic updates from the ABS for the surrounding region alongside fresh addresses confirmed by AreaSearch post-census indicates that the suburb of Castlecrag has an estimated residency of 3,189 individuals as of May 2026. Compared to the 2021 Census, which counted 2,965 residents, this represents an addition of 224 people, or a rise of 7.6%. This estimate builds on a base population of 3,186 calculated by AreaSearch using the ABS June 2025 release of ERP figures, coupled with 3 newly validated addresses registered after the census. Such population volume translates to a density of 2,111 persons per square kilometer, a level that ranks above the typical density observed across national sites tracked by AreaSearch.

The suburb of Castlecrag outpaced the wider SA4 region's growth rate of 5.9% as well as the state overall, establishing itself as a regional pacesetter. This expansion was almost entirely underpinned by arrival of overseas migrants, who acted as the sole source of positive population movements lately. Projections for each SA2 zone published in 2024 using 2022 as the base year by the ABS and Geoscience Australia are applied here by AreaSearch. For SA2 territories where this dataset is unavailable, calculations utilize the 2022 projections from the NSW State Government, established with a 2021 baseline. Age category expansion rates derived from these datasets are projected forward for the period from 2032 to 2041. Future demographic trajectories point to growth slightly below the middle of all locations studied by AreaSearch, with the suburb of Castlecrag expected to add 122 individuals by 2041 under consolidated SA2 models, signifying a total expansion of 3.7% over the 16 years.

Frequently Asked Questions - Population

What is the latest population estimate for the suburb of Castlecrag?
Total population for the suburb of Castlecrag was estimated to be approximately 3,189 as at May 26. This is based upon an estimated resident population of 3,186 from the ABS up to June 2025.
How has the population in the suburb of Castlecrag changed since 2021?
The suburb of castlecrag has added approximately 224 people and shown a 7.55% increase from the 2,965 people recorded at the 2021 Census period.
What is the population density in the suburb of Castlecrag?
The population density in the suburb of Castlecrag is estimated at 2,111 persons per square kilometer based on the latest population estimate.
How much has the population grown over the past 10 years in the suburb of Castlecrag?
Over the past 10 years, the population in the suburb of Castlecrag has shown a compound annual growth rate of 0.2% per annum.
What are the main drivers of population growth in the suburb of Castlecrag?
Population growth in the suburb of Castlecrag 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 Castlecrag

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35 new dwellings have been approved in Castlecrag over the past five years, an average of 7 a year. That places the area in the 58th percentile for residential development activity nationally, about 2 approvals per 1,000 residents a year. Approvals are currently running at an annualised 66, running ahead of that longer-run average. Figures come from ABS building approvals aggregated to this Suburb (SAL) boundary and are updated monthly as the ABS releases them.

Detail

AreaSearch calculations based on ABS building permit records allocated to local boundaries indicate that the suburb of Castlecrag averages approximately 7 residential approvals per year. This matches an estimated total of 35 residences authorized over the 5 financial years spanning FY-21 to FY-25, alongside 61 approvals recorded during FY-26 to date. Given that local demand averaged 4.1 new residents for each home completed during the 5 financial years spanning FY-21 to FY-25, the need for housing outstrips supply, which generally drives values upward and increases buyer rivalry. Approved new residential projects show an average estimated cost of $1,352,000, signaling that builders are targeting the higher-end sector with premium offerings.

In contrast, commercial authorizations totaled $109,000 for this financial year, representing minimal development activity. Compared with the wider Greater Sydney region, construction volume in the suburb of Castlecrag is substantially lower, sitting at 64.0% below the regional per capita average. This minimal supply of new options typically bolsters demand and prices for existing stock, even though building pace has quickened lately. The volume also sits below the national benchmark, reflecting a mature setting that may face regulatory planning constraints. Recent approvals are split between detached homes at 56.0% and medium-to-high density formats at 44.0%, indicating a shift toward varied attached options that provide choices across price points, ranging from large family spaces to compact alternatives. This represents a distinct shift from the historical inventory, which is 97.0% houses, showing that vacant building land is becoming scarce while aligning with modern lifestyle choices and budget considerations. The ratio of residents to dwelling approvals stands at roughly 234 people per approval, indicating room for growth. Long-term outlooks suggest the population of the suburb of Castlecrag will grow by 119 residents by 2041, referencing the most recent quarterly projections by AreaSearch. Assuming current building rates persist, residential supply is positioned to satisfy local needs, maintaining favorable options for buyers while potentially facilitating growth beyond current predictions.

Frequently Asked Questions - Development

How many dwelling approvals have occurred in the suburb of Castlecrag recently?
Dwelling approval activity in the the suburb of Castlecrag area has seen 27 residential approvals over the past two financial years, based on AreaSearch's SA2 aggregation method. The suburb of Castlecrag's current population of 3,189 has been supported by 7 approvals on average over recent years.
How does the suburb of Castlecrag's development activity compare to the broader region?
The suburb of Castlecrag has seen 0.23 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 233 people in the suburb of Castlecrag, compared to one for every 190 in the broader region.
Is the suburb of Castlecrag keeping up with housing demand?
With the population expected to increase by 119 people by 2041, around 40 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 suburb of Castlecrag?
Looking at development activity over the past five years, the suburb of Castlecrag's approval levels have been significantly above the yearly average of 7, indicating strong recent growth in development activity.
How many dwellings will be needed to accommodate future population growth in the suburb of Castlecrag?
The population in the suburb of Castlecrag is expected to grow by 119 people by 2041, necessitating approximately 40 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 suburb of Castlecrag?
Over the past five years, the population in the suburb of Castlecrag has grown by approximately 276 people, while 35 residential approvals were recorded. This equates to a ratio of 7.9 people added for each new dwelling approval. This high ratio suggests strong population growth relative to housing supply, potentially indicating unmet housing demand.
Are there opportunities for residential developers in the suburb of Castlecrag?
With dwelling approval activity running at an average of 7 approvals per year and a population of 3,189, 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 119 people by 2041, around 40 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 Castlecrag

Development applications around Castlecrag

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 Castlecrag

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AreaSearch tracks 50 current infrastructure and development projects close to Castlecrag, worth an estimated $10.6 billion. 11 are already under construction and 25 are due for completion within three years. The pipeline spans residential development, communities and communities, precincts & urban renewal. 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

Local infrastructure projects, planning choices, and significant civil works play a key role in regional trajectories. In total, AreaSearch has identified no projects that are expected to influence the local area. Principal regional developments include Heart Of Willoughby, Beaches Link Tunnel, North Sydney To Northern Beaches Capacity Improvements, and Northern Beaches Housing Reforms Implementation, with the associated register detailing the most relevant undertakings.

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

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Frequently Asked Questions - Infrastructure

What are some of the major infrastructure and planning changes likely to influence the suburb of Castlecrag?
Key infrastructure and planning changes likely to influence the suburb of Castlecrag include: Heart Of Willoughby (Construction); Beaches Link Tunnel (Approved); North Sydney To Northern Beaches Capacity Improvements; Northern Beaches Housing Reforms Implementation (Approved); and Low and Mid-Rise Housing Policy (Approved). These projects represent significant developments that will shape the area's future infrastructure landscape.
What types of infrastructure projects are impacting the suburb of Castlecrag?
Infrastructure development impacting the suburb of Castlecrag spans multiple sectors including Transport & Logistics, Residential Development, and Communities, Precincts & Urban Renewal, among others.
What is the scale of infrastructure investment impacting the suburb of Castlecrag?
Infrastructure investment analysis indicates substantial capital deployment exceeding $71.7 billion in projects that will impact the extended area.
How does the suburb of Castlecrag's infrastructure development compare to other areas?
The suburb of Castlecrag ranks in the top 20% nationally for infrastructure development, reflecting exceptional investment activity compared to similar areas across the country.
Aurora Willoughby
Category: Residential Development
Stage: Planning | Est. Comp: 2026
Source / Links: Link 1   

Boutique collection of 12 luxury 1, 2 and 3-bedroom apartments setting a new benchmark in high-end living. Inspired by nature and defined by architectural elegance, featuring contemporary design with premium finishes and landscaped spaces integrated with natural surroundings. Developed by Sun Property Group with Datlas as builder, featuring sophisticated light-filled interiors, open-plan entertaining spaces, generous terraces, and hanging gardens. Located at the gateway to Willoughby village with proximity to transport connectivity.

Residential Development

The Quarry Naremburn
Category: Residential Development
Stage: Construction | Est. Comp: 2026
Source / Links: Link 1   Link 2  

Boutique collection of 28 luxury apartments and townhouses set within a landscaped former quarry site in Naremburn. The project is currently under construction.

Residential Development

Areas 18-20 St Leonards South
Category: Residential Development
Stage: Approved | Est. Comp: 2027
Source / Links: Link 1   Link 2  

Residential development within the St Leonards South precinct, involving demolition of existing structures and construction of five residential flat buildings with 207 apartments, basement parking, and communal open space, contributing to urban renewal and increased housing density.

Residential Development

Seaforth Village Masterplan & Redevelopment
Category: Precincts & Urban Renewal
Stage: Planning | Est. Comp: 2028
Source / Links: Link 1   Link 2  

A proposed mixed-use village centre redevelopment of the existing Seaforth shopping strip, featuring a new full-line supermarket, specialty retail, dining precinct, medical centre, childcare facility, and improved public domain with laneways and plazas. Developed by Celeste Property, the project aims to transform the ageing centre into a contemporary neighbourhood hub serving the Northern Beaches community.

Precincts & Urban Renewal

270 Willoughby Road Mixed Use Development
Category: Communities, Precincts & Urban Renewal
Stage: Approved | Est. Comp: 2026

Approved mixed-use development featuring 235sqm of prime retail on ground level with 8 residential apartments above. B1 Neighbourhood Centre zoning with 1.5:1 FSR and 11m height limit. Designed by Architecture Urbaneia.

Communities, Precincts & Urban Renewal

Falcon & Alexander (Five Ways)
Category: Communities
Stage: Construction | Est. Comp: 2027
Source / Links: Link 1   Link 2  

A $640 million, 22-storey mixed-use development at the Five Ways intersection in Crows Nest, comprising 188 apartments (140 market and 48 affordable housing), a 100-room boutique hotel, ground-floor retail and commercial premises within a 3-storey podium, and seven basement levels. Designed by Turner Studio, the project is located a five-minute walk from Crows Nest Metro Station. Approved by the NSW Independent Planning Commission (SSD-66826207) in December 2024, with construction commenced in 2025.

Communities

Falcon & Alexander, Crows Nest by Deicorp
Category: Communities
Stage: Construction | Est. Comp: 2028
Source / Links: Link 1   Link 2  

Deicorp's $640M landmark mixed-use development at the Five Ways junction in Crows Nest. The 22-storey building, designed by Turner Studio, delivers 188 apartments (48 affordable) above a 100-room boutique hotel, ground-floor retail and dining, a resident Skygarden, and seven basement levels of parking. Approved by the NSW IPC on 23 December 2024 and under construction, the project sits a five-minute walk from Crows Nest Metro Station.

Communities

The Pagewood St Leonards
Category: Residential Development
Stage: Construction | Est. Comp: 2026
Source / Links: Link 1   Link 2  

The Pagewood St Leonards is a 35-level luxury residential tower by Poly Australia at 572-580 Pacific Highway, delivering 198 high-rise apartments with harbour and city views, resort-style resident amenities and activated ground-floor retail space.

Residential Development

Jobs & IndustryEmployment Trends in Castlecrag

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1,742 residents of Castlecrag are employed, from a labour force of 1,798. Unemployment sits at 3.1%, with participation at 65.9%. Weighted for its industry mix, the area's sectors are forecast to grow about 8.0% nationally over five years. That reflects industry composition only and makes no allowance for local population growth. The working-day population is estimated at 2,605, about 82% of the resident population, so more people leave the area for work than travel in. Unemployment and labour force come from ABS Small Area Labour Markets, updated quarterly; the industry and occupation profile is from the 2021 Census.

Detail

A highly qualified labor force characterizes the suburb of Castlecrag, with the tech industry showing strong representation. The local jobless rate stands at 3.1%, while estimated employment grew by 3.9% over the past year, according to AreaSearch compilation of regional metrics. As of March 2026, working residents numbered 1,742, representing an unemployment rate 1.0% lower than the Greater Sydney mark of 4.1%. Workforce engagement trails regional levels, with participation at 65.9% compared to 69.1% across Greater Sydney. Census data indicates that 65.0% of local workers performed their duties from home, though this figure was likely influenced by pandemic restrictions.

Local workforce participants are mostly concentrated in professional & technical services, financial & insurance activities, and the healthcare & social assistance sector. Professional & technical representation is particularly high, with employment rates in this category reaching 2.1 times the regional average. Conversely, construction workers are less common, representing 4.8% of the local workforce compared to 8.6% across the metropolitan area. The area appears to function primarily as a dormitory suburb, offering few jobs locally relative to its resident workforce. Based on AreaSearch processing of SALM and ABS statistics aggregated from broader regions, the 12-month window witnessed a 3.9% increase in employed residents alongside a 3.3% expansion of the labor pool, leading to a 0.6 percentage point drop in the jobless rate. In comparison, Greater Sydney recorded a 1.9% rise in employment, a 1.9% increase in the labor force, and a minor reduction in unemployment. National forecasts released in May-25 by Jobs and Skills Australia help illustrate potential long-term hiring trends in the suburb of Castlecrag. These five-year and ten-year national predictions have been modeled against the local industry makeup to project growth. While overall Australian employment is anticipated to grow by 6.6% over five years and 13.7% over ten years, individual sectors show varied performance. Applying these national trajectories to the local occupational structure suggests employment among residents could rise by 8.0% over five years and 15.6% over ten years, assuming a basic weighted calculation that excludes local demographic projections.

Frequently Asked Questions - Employment

What is the employment situation in the suburb of Castlecrag?
As of March 2026, the suburb of Castlecrag has approximately 1,742 employed residents with an unemployment rate of 3.1%. This healthy unemployment rate suggests a well-functioning labour market. Employment performance is above the national median, showing positive labour market dynamics.
How does the suburb of Castlecrag's unemployment rate compare to the broader region?
As of March 2026, the unemployment rate in the suburb of Castlecrag stands at 3.1%, which is 1.0 percentage points below Greater Sydney's rate of 4.1%. This lower unemployment rate suggests stronger local employment conditions. For comparison, the national unemployment rate is 4.2%.
What are the major employment sectors in the suburb of Castlecrag?
The employment landscape in the suburb of Castlecrag is dominated by several key sectors. The largest employers are professional & technical (23.9% of employment), finance & insurance (14.5%), and health care & social assistance (13.9%). These three sectors alone account for 52.3% of local employment, indicating significant concentration. Other significant employers include education & training and retail trade.
How has employment changed recently in the suburb of Castlecrag?
Over the past year to March 2026, the suburb of Castlecrag has experienced employment growth, with total employment increasing while the labour force increased. As a result, the unemployment rate has fall. By comparison, Greater Sydney saw employment increased and its unemployment rate dropped.
What is the workforce participation rate in the suburb of Castlecrag?
The workforce participation rate in the suburb of Castlecrag is 65.9%, 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 suburb of Castlecrag's employment market?
The suburb of castlecrag shows notable specialization in professional & technical, which employs 23.9% of the local workforce compared to 11.5% regionally. With a local vs regional employment ratio of 2.1, this represents a significant industry cluster that likely serves markets beyond the local area. The area also shows above-average employment in 1 other sectors, contributing to a distinctive economic profile.
What are the employment growth prospects for the suburb of Castlecrag?
Based on Jobs and Skills Australia projections applied to the suburb of Castlecrag's industry mix, employment is expected to grow by 8.0% over the next five years and 15.6% 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 suburb of Castlecrag compare nationally?
The suburb of castlecrag's employment market shows above-average performance nationally, placing in the top half of areas assessed. Employment indicators suggest healthy labour market conditions relative to 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 suburb of Castlecrag?
Skilled workers will find excellent opportunities in the suburb of Castlecrag, with knowledge-intensive sectors comprising 63.7% of local employment. Key sectors for skilled workers include professional & technical (23.9%), finance & insurance (14.5%), and health care & social assistance (13.9%). With projected employment growth of 8.0% over five years, demand for skilled workers is expected to remain strong.

EarningsHousehold Income in Castlecrag

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Median household income in Castlecrag is $4,675 a week (about $243,000 a year), with median personal income at $1,446 a week. ATO records put median taxable income at $81,592 a year against an average of $192,257. The average runs 136% 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

Data compiled by AreaSearch from postcode-level ATO records for financial year 2023 shows that taxpayers in the suburb of Castlecrag recorded a median income of $81,592 and an average income of $192,257. These figures sit in the highest national percentiles and compare to $60,817 and $83,003 for Greater Sydney. Factoring in Wage Price Index growth of 10.32% since financial year 2023, current estimates for March 2026 point to a median of $90,012 and an average of $212,098. In the 2021 Census, household, family, and individual earnings in the suburb of Castlecrag fell between the 97th and 99th percentiles nationwide.

The highest income category of $4000+ per week accounts for 56.8% of the local population, or 1,811 residents, whereas the $1,500 - 2,999 range is the most common in the wider region at 30.9%. High affluence is evident, with 66.7% of the community earning more than $3,000 weekly, which underpins demand for high-end shops and services. Disposable income after housing costs is high, with residents keeping 89.1% of their earnings, and the area is positioned in the 10th decile of the SEIFA index.

Frequently Asked Questions - Income

What is the median taxable income in the suburb of Castlecrag?
Based on Wage Price Index adjustments to March 2026, the estimated median taxable income in the suburb of Castlecrag is approximately $90,012. The official ATO data from FY-23 recorded a median of $81,592.
What is the average taxable income in the suburb of Castlecrag?
Based on Wage Price Index adjustments to March 2026, the estimated average taxable income in the suburb of Castlecrag is approximately $212,098. The official ATO data from FY-23 recorded an average of $192,257.
How does the median taxable income in the suburb of Castlecrag compare to the region?
Based on Wage Price Index adjustments to March 2026, the estimated median taxable income in the suburb of Castlecrag is approximately $90,012 compared to $67,093 in Greater Sydney. The official ATO data from FY-23 shows $81,592 and $60,817 respectively.
How does the average taxable income in the suburb of Castlecrag compare to the region?
Based on Wage Price Index adjustments to March 2026, the estimated average taxable income in the suburb of Castlecrag is approximately $212,098 compared to $91,569 in Greater Sydney. The official ATO data from FY-23 shows $192,257 and $83,003 respectively.
What are the main income cohorts in the suburb of Castlecrag according to the 2021 Census?
As per the 2021 Census, the income bracket containing the largest proportion (~56.8% / 1,811 persons) of the suburb of Castlecrag's population is the $4000+ cohort.
How do the main income cohorts in the suburb of Castlecrag compare to the region?
The largest income cohort in the suburb of Castlecrag is the $4000+ group, representing about 56.8% 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 suburb of Castlecrag according to the 2021 Census?
The 2021 Census data indicates that the median household income in the suburb of Castlecrag is $4,675/wk.
What is the median family income in the suburb of Castlecrag according to the 2021 Census?
According to the 2021 Census, the median family income in the suburb of Castlecrag is $4,857/wk.
What is the median personal income in the suburb of Castlecrag according to the 2021 Census?
The 2021 Census shows that the median personal income in the suburb of Castlecrag is $1,446/wk.
How does the suburb of Castlecrag's income rank nationally?
According to AreaSearch's aggregation of the latest postcode level ATO data released for FY-23, the suburb of Castlecrag had a median income among taxpayers of $81,592 with the average level standing at $192,257. This is among the top percentile nationally and compares to levels of $60,817 and $83,003 across Greater Sydney respectively. Based on Wage Price Index growth of 10.32% since FY-23, current estimates would be approximately $90,012 (median) and $212,098 (average) as of March 2026.
What is the disposable income in the suburb of Castlecrag?
The estimated disposable income in the suburb of Castlecrag is $18,048 per year according to AreaSearch analysis.
How does the suburb of Castlecrag's disposable income compare to the region?
The suburb of castlecrag's disposable income is $18,048 compared to $7,412 for Greater Sydney, based on AreaSearch analysis.

Housing StockHousing & Dwellings in Castlecrag

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Castlecrag had 955 occupied dwellings at the 2021 Census, 97% detached houses and 1% apartments. 39% are owned with a mortgage, 12% rented and 49% owned outright. At that Census the median rent was $1,010 a week and the median mortgage repayment $4,333 a month, a total housing cost higher than 98% of areas nationally. Rent absorbs 21.6% of household income here and mortgage repayments 21.4%. Dwelling stock, tenure and housing costs are 2021 Census measures — the only source that counts dwellings at this boundary size.

Detail

The residential landscape in the suburb of Castlecrag at the time of the latest Census consisted of 96.7% separate houses and 3.3% other formats like townhouses, apartments, or alternative dwellings, contrasting with the Sydney metropolitan breakdown of 55.9% houses and 44.1% other dwellings. Home ownership rates in the suburb of Castlecrag reached 49.1%, outstripping metropolitan levels, while mortgaged properties accounted for 39.0% and rented properties made up 11.9%. The median monthly mortgage payment of $4,333 was significantly higher than the metropolitan median of $2,427. Similarly, the median weekly rental cost was $1,010 compared to the regional median of $470.

Globally, mortgage costs in the suburb of Castlecrag are well above the national median of $1,863, and rent prices are substantially higher than the Australian median of $375.

Frequently Asked Questions - Housing

What percentage of homes are owned vs rented in the suburb of Castlecrag?
In the suburb of Castlecrag, 49.1% of homes are owned outright, 39.0% are owned with a mortgage, and 11.9% are rented.
What percentage of dwellings in the suburb of Castlecrag are houses?
According to the latest data, 96.7% of dwellings in the suburb of Castlecrag are houses.
What percentage of dwellings in the suburb of Castlecrag are apartments or units?
In the suburb of Castlecrag, 1.1% of dwellings are apartments or units, with an additional 1.8% being semi-detached dwellings.
What is the level of outright home ownership in the suburb of Castlecrag?
Outright home ownership in the suburb of Castlecrag stands at 49.1%, compared to 28.7% in Greater Sydney.
What is the median monthly mortgage repayment in the suburb of Castlecrag?
The median monthly mortgage repayment in the suburb of Castlecrag is $4,333, compared to $2,427 in Greater Sydney.
What is the median weekly rent in the suburb of Castlecrag?
The median weekly rent in the suburb of Castlecrag is $1,010, compared to $470 in Greater Sydney.
What is the distribution of rental prices in the suburb of Castlecrag?
In the suburb of Castlecrag, 0.0% of rentals are $0-149/week, 0.0% are $150-349/week, 12.6% are $350-649/week, 26.3% are $650-949/week, and 61.1% are $950+/week.
What is the average monthly housing cost in the suburb of Castlecrag?
The aggregate monthly housing cost in the suburb of Castlecrag is $2,210, which represents the average monthly cost across all housing types.
What percentage of income do residents spend on housing in the suburb of Castlecrag?
In the suburb of Castlecrag, households with mortgages typically spend 21.4% of their income on mortgage repayments, while renters spend 21.6% of their income on rent.
How crowded are homes in the suburb of Castlecrag?
The average persons per bedroom ratio in the suburb of Castlecrag is 0.8, indicating the level of household density.
How does housing affordability in the suburb of Castlecrag compare to the region?
Housing affordability in the suburb of Castlecrag shows mortgage holders spending 21.4% of income on repayments (vs 27.0% regionally), while renters spend 21.6% of income on rent (vs 22.6% regionally).
What types of dwellings are most common in the suburb of Castlecrag?
The dwelling mix in the suburb of Castlecrag consists of 96.7% detached houses, 1.8% semi-detached dwellings, 1.1% apartments, and 0.4% other dwelling types.
What is the weighted average housing cost based on tenure mix in the suburb of Castlecrag?
Based on the area's tenure composition, the weighted average monthly housing cost is approximately $2,210. This accounts for outright owners paying no housing costs, mortgage holders paying $4,333/month, and renters paying $4,373/month.
How affordable is housing in the suburb of Castlecrag relative to local incomes?
Housing in Castlecrag consumes approximately 10.9% of median household income ($20,243 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 suburb of Castlecrag?
Recent development applications in Castlecrag show attached dwellings contributing 43% of approvals compared to 3% of existing stock, while detached houses represent 57% of applications versus 97% of current dwellings. This suggests increasing densification. Housing density growth is around the national average.

HouseholdsHousehold Composition in Castlecrag

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Castlecrag counted 955 households at the 2021 Census, an estimated 1,027 today, averaging 3.0 people each. 51% are couples with children, more than in 95% of areas nationally, against 28% couples without children. 11% of households are people living alone, and families average 1.6 children. Household and family composition is measured only by the Census, so these are 2021 figures.

Detail

Household composition is dominated by families at 88.5%, which includes 51.3% couples with children, 28.1% couples without children, and 8.3% single parent households. The remaining 11.5% consists of non-family living arrangements, where single-person households account for 11.1% and group houses represent 0.6%. The typical household size of 3.0 persons is larger than the Greater Sydney median of 2.7.

Frequently Asked Questions - Households

How many households are in the suburb of Castlecrag?
As of the 2021 Census, the suburb of Castlecrag had 955 households. Based on population growth patterns, this has grown by approximately 7.5% to an estimated 1,027 households today.
What is the typical household size?
The median household size in the suburb of Castlecrag 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 88.5% of all households. The remaining households consist of lone person households (11.1%), group households (0.6%), and other household types (0.0%).
How are families structured in the area?
Among the 845 family households, 51.3% are couples with children, 28.1% are couples without children at home, and 8.3% are single parent families. This mix shapes local demand for schools, family services, and housing types.
How does the suburb of Castlecrag compare to regional household patterns?
Compared to Greater Sydney, the suburb of Castlecrag shows distinct household patterns. Family households are notably over-represented at 88.5% (versus 72.6% regionally). Conversely, lone person households are under-represented at 11.1% 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 suburb of Castlecrag have an average of 1.6 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 suburb of Castlecrag?
Marriage patterns reveal 61.5% of the adult population are currently married, while 29.0% 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 11.1% of all households in the suburb of Castlecrag, 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 0.6% 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 Castlecrag

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59.8% of adults in Castlecrag hold a university qualification, including 37.9% with a bachelor degree and 17.9% with postgraduate qualifications, higher than 91% of areas nationally. A further 5.7% hold a vocational qualification. 2 schools serve the area. Qualifications come from the 2021 Census; school enrolments, ICSEA and results come from ACARA's current release.

Detail

Academic credentials in the suburb of Castlecrag are highly elevated compared to wider averages, with 59.8% of residents aged 15+ holding a university degree, compared to national levels of 30.4% and state levels of 32.2%. This educational profile positions the suburb well for knowledge-sector positions. Bachelor level degrees are the most common qualification at 37.9%, followed by postgraduate study at 17.9% and graduate diplomas at 4.0%. Vocational training accounts for 13.6% of educational achievements for those aged 15+, consisting of advanced diplomas at 7.9% and certificates at 5.7%. School and university attendance is high, with 33.6% of the population enrolled in formal study.

This total is comprised of 12.8% in high school, 9.3% in primary school, and 7.9% enrolled in higher education.

Frequently Asked Questions - Education

What percentage of people in the suburb of Castlecrag have university qualifications?
59.8% of people aged 15 and over in the suburb of Castlecrag have university qualifications, compared to 38.0% in the broader region.
What percentage of people in the suburb of Castlecrag have no formal qualifications?
26.6% of people aged 15 and over in the suburb of Castlecrag have no formal qualifications, compared to 34.2% regionally.
How does the suburb of Castlecrag's education level compare to national averages?
The suburb of castlecrag ranks in the 91th percentile nationally for education based on AreaSearch's analysis of qualification and performance metrics.
What types of qualifications are most common in the suburb of Castlecrag?
The most common qualifications in the suburb of Castlecrag are: Bachelor Degree (37.9%), Postgraduate (17.9%), Advanced Diploma (7.9%).
What proportion of the suburb of Castlecrag's population is currently attending educational institutions?
33.6% of the population in the suburb of Castlecrag is currently engaged in formal education, with 9.3% in primary school, 12.8% in secondary school, 7.9% at university.
What is the ICSEA score for schools in the suburb of Castlecrag?
The average ICSEA (Index of Community Socio-Educational Advantage) score for schools in the suburb of Castlecrag is 0, indicating below-average socio-educational advantage compared to the national average of 1000.
How many schools are located within the suburb of Castlecrag?
There are 2 schools within the suburb of Castlecrag, with a combined enrollment of approximately 0 students.
What types of schools are available in the suburb of Castlecrag?
The suburb of castlecrag includes 1 primary school, 1 combined school.

Schools Detail

AmenitiesServices & Amenities in Castlecrag

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Getting AroundTransport & Commuting in Castlecrag

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Public transport in Castlecrag reaches 19 stops on 29 routes, timetabled for about 1,200 services a week. The typical home sits about 190 m from its nearest stop. Buses carry the largest share of public transport commuters. Households keep an average of 1.7 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

Analysis of transit facilities shows 19 active bus stops located in the suburb of Castlecrag. These stops connect to 29 separate routes, which collectively deliver 1,231 passenger journeys each week. Local access to transport is rated as excellent, with typical residences situated 187 meters from the nearest stop. Because of the area's residential profile, most workers travel out of the suburb, with private cars serving as the primary transit mode at 85%, followed by buses at 6%. Household vehicle ownership averages 1.7 cars, which is higher than the metropolitan average.

A high proportion of residents, 65.0%, reported working from home in the 2021 Census, which may have been influenced by pandemic conditions. Transit service frequency averages 175 runs per day across all active routes, which translates to approximately 64 departures per week for each individual stop.

Frequently Asked Questions - Transport

How many public transport stops are in Castlecrag?
There are 19 public transport stops within the suburb of Castlecrag.
How frequent are the transport services in Castlecrag?
the suburb of Castlecrag has 1,231 weekly trips across 29 routes, averaging 175 trips per day.
How far are residents from public transport in Castlecrag?
On average, residential properties are 187 meters from the nearest transport stop.

Transport Stops Detail

HealthcareHealth Services in Castlecrag

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77.3% of residents in Castlecrag report no long-term health condition, a healthier profile than 95% of areas nationally. 2.7% need daily assistance with core activities. The standardised death rate runs at 3.8 per 1,000 residents. Health conditions, assistance needs and insurance are 2021 Census measures; the death rate comes from current ABS releases.

Detail

Public health metrics reveal positive outcomes in the suburb of Castlecrag, based on AreaSearch assessments of mortality patterns and chronic illnesses, showing low rates of standard health conditions across all ages. Private health insurance coverage is exceptionally high, encompassing roughly 102% of the local population, or 3,266 people. This rate stands in contrast to the 59.9% coverage measured across Greater Sydney and the national baseline of 55.7%. Arthritis and asthma are the most common health conditions reported, each affecting 5.7% of residents. Meanwhile, 77.3% of the community reported having no chronic medical issues, compared to 74.6% in Greater Sydney.

Residents aged 65 and over make up 19.5% of the local population, representing 621 people, which exceeds the regional average of 15.5%. Seniors in the area record strong health metrics, with national standings aligning with those of the wider local population.

Frequently Asked Questions - Health

How many people in the suburb of Castlecrag have private health insurance?
Around 102.4% of people in the suburb of Castlecrag 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 suburb of Castlecrag?
In the suburb of Castlecrag, 2.7% 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 suburb of Castlecrag?
5.7% of people in the suburb of Castlecrag 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 suburb of Castlecrag?
Diabetes affects 2.4% of the the suburb of Castlecrag 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 suburb of Castlecrag?
3.1% of people in the suburb of Castlecrag have heart disease. Across the region of Greater Sydney, 3.2% of the population is affected by heart disease.
How does the suburb of Castlecrag compare to the region in terms of overall private health coverage?
In the suburb of Castlecrag, 102.4% 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 Castlecrag

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32.6% of Castlecrag residents were born overseas and 19.3% speak a language other than English at home. The largest reported ancestries are English (25.8%) and Australian (19.4%). Ancestry, language and country of birth are counted only by the Census, so these are 2021 figures.

Detail

Cultural diversity in the suburb of Castlecrag is higher than in most surrounding residential markets, with 19.3% of residents speaking a non-English language in their homes and 32.6% born outside Australia. Christianity is the primary religion, representing 49.2% of the local community. The most distinct religious overrepresentation is seen in Judaism, which is practiced by 2.6% of residents compared to 0.8% across Greater Sydney. Regarding parental origins, the three largest ancestry groups in the suburb of Castlecrag are English at 25.8% of the population, which is higher than the metropolitan benchmark of 19.0%, Australian at 19.4%, and Irish at 9.7%.

Significant variations are also seen in other groups: Hungarian background accounts for 1.1% of the population compared to 0.3% regionally, French ancestry represents 1.0% compared to 0.5%, and Polish heritage stands at 1.1% compared to 0.6%.

Frequently Asked Questions - Diversity

What is the level of cultural diversity in the suburb of Castlecrag?
Castlecrag was found to be more culturally diverse than the vast majority of local markets, with 19.3% of its population speaking a language other than English at home and 32.6% born overseas.
What is the most common religion in the suburb of Castlecrag?
The main religion in Castlecrag was found to be Christianity, which makes up 49.2% of people in Castlecrag. However, the most apparent overrepresentation was in Judaism, which comprises 2.6% of the population, compared to 0.8% across Greater Sydney.
What are the top countries of origin in the suburb of Castlecrag?
In terms of ancestry (country of birth of parents), the top three represented groups in Castlecrag are English, comprising 25.8% of the population, which is substantially higher than the regional average of 19.0%, Australian, comprising 19.4% of the population, and Irish, comprising 9.7% of the population. Additionally, there are notable divergences in the representation of certain other ethnic groups: Hungarian is notably overrepresented at 1.1% of Castlecrag (vs 0.3% regionally), French at 1.0% (vs 0.5%) and Polish at 1.1% (vs 0.6%).
How does the percentage of people born overseas compare to the regional average?
32.6% of the the suburb of Castlecrag population was born overseas, compared to 40.5% regionally.
What percentage of the the suburb of Castlecrag population speaks a language other than English at home?
19.3% of the population in the suburb of Castlecrag speaks a language other than English at home, compared to 39.5% in the wider region.
How many people in the suburb of Castlecrag identify as Australian Aboriginal?
0.1% of the the suburb of Castlecrag population identifies as Australian Aboriginal, compared to 1.3% in the region.
What is the citizenship status of the population in the suburb of Castlecrag?
91.3% of the the suburb of Castlecrag population holds citizenship, compared to 80.8% in the wider region.

Age StructureAge Profile of Castlecrag

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The median resident of Castlecrag is 46, older than 85% of areas nationally. That is 1 year younger than at the 2021 Census. 28.1% 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 of 46 years in the suburb of Castlecrag is higher than the Greater Sydney median of 37 and the national average of 38. The 15 - 24 demographic shows high representation at 23.5% locally, while young adults aged 25 - 34 are less represented at 4.6%. The percentage of residents aged 15 - 24 is higher than the national rate of 12.7%. Since the 2021 Census, the median age has decreased by 1.4 years, moving from 47 down to 46. Specifically, the 15 to 24 age bracket rose from 15.9% to 23.5% of the total population, and the 75 to 84 cohort grew from 5.0% to 6.2%.

In contrast, the 5 to 14 cohort decreased from 14.9% to 11.8%, and the 45 to 54 cohort fell from 18.9% to 16.5%. Projections for 2041 point to shifts in the age structure of the suburb of Castlecrag, with the 45 to 54 group expected to grow by 273 people, or 52%, climbing from 526 to 800. Conversely, both the 0 to 4 and 35 to 44 age cohorts are expected to decrease in size.

Frequently Asked Questions - Age

What is the median age in the suburb of Castlecrag?
According to the latest data, the median age in the suburb of Castlecrag is 46 years.
How does the suburb of Castlecrag's median age compare to broader areas?
At 46 years, Castlecrag is 9 years older than the Greater Sydney average (37 years) and 8 years older than the national average (38 years).
What age groups are over-represented in the suburb of Castlecrag?
The most over-represented age group in the suburb of Castlecrag compared to the Greater Sydney region is the 15 - 24 group, making up 23.5% of the population.
What age groups are under-represented in the suburb of Castlecrag?
The most under-represented age group in the suburb of Castlecrag compared to the Greater Sydney region is the 25 - 34 group, making up 4.6% of the population.
Are there age groups with notable population variances?
Yes, certain age groups in the suburb of Castlecrag show significant variance compared to the Greater Sydney region. The most over-represented age groups are 15-24 year-olds (23.5% vs 13.2%) and 55-64 year-olds (14.6% vs 10.3%). The most under-represented age groups are 25-34 year-olds (4.6% vs 16.1%) and 0-4 year-olds (2.2% vs 5.6%).
What is the percentage of children (0-14 years) in the suburb of Castlecrag?
The percentage of children aged 0-14 years in the suburb of Castlecrag is 14.0%.
What is the percentage of older people (65+ years) in the suburb of Castlecrag?
The percentage of people aged 65 and over in the suburb of Castlecrag is 19.5%.

Data & MethodBoundaries, Sources & Method for Castlecrag

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 Suburb (SAL) 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, Local governments Daily May 2026 3 months ago 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 May 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 — 3 validated new addresses here. The headline figure is therefore a current estimate for May 2026, not a 2021 count (2,965 at the 2021 Census → 3,189 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 (SAL10848). QuickStats reports 2021 only — the figures on this page are more current wherever the ledger shows a later date.

Common questions about this page

How do Castlecrag suburb boundaries differ from Statistical Areas?
This page uses Suburbs and Localities (SAL) boundaries (suburb-style geography). SAL represents commonly-known suburb names used in addresses, while Statistical Areas (SA2) are designed for census/statistical reporting. Even when sharing the same name, SAL and SA2 boundaries often cover different geographic areas with different populations.
Where does the data on this Castlecrag 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 Castlecrag 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 (May 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.

Nearby Areas