Baulkham Hills

Suburb (SAL)

Greater Sydney / Baulkham Hills

 
 
 
 
 
 
 
Data Sources ABSValuer GeneralRental BoardACARA Newest Aug 2026 · Refreshed ABS QuickStats SAL10233 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 Baulkham Hills

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The median house price in Baulkham Hills is $2.00m, with units at $910k. House values have moved 4.2% a year compounded over five years.

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DemographicsPopulation Growth in Baulkham Hills

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Baulkham Hills has an estimated 37,841 residents, up from 37,415 at the 2021 Census — a change of 426 people, or 1.1%. 216 new addresses have been validated here since Census night. That puts 2,778 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

According to investigations of ABS demographic statistics for the surrounding region, as well as validated address listings from AreaSearch since the Census, the suburb of Baulkham Hills has an estimated population of 37,841 as of May 2026. This represents a growth of 426 residents (1.1%) relative to the 2021 Census, which documented a population of 37,415 people. The adjustment is derived from the resident population of 37,404, which AreaSearch calculated using the most recent ABS ERP release (June 2025) along with 216 validated new addresses registered since the Census date.

This population size corresponds to a density of 2,778 persons per square kilometer, placing the locality in the top quartile of countrywide areas analyzed by AreaSearch. Growth in the suburb of Baulkham Hills was driven mostly by overseas migration, which accounted for roughly 89.0% of the total demographic increase in recent times. AreaSearch incorporates ABS and Geoscience Australia demographic projections for each SA2 region, which were published in 2024 using 2022 as the base year. For any SA2 regions lacking this coverage, projections from the NSW State Government at the SA2 level are implemented, published in 2022 using 2021 as the base year. Projected age-group expansion rates from these sources are also applied to all localities for the period spanning 2032 to 2041. Based on these anticipated demographic transitions, the suburb of Baulkham Hills is expected to experience population growth exceeding the national median, with an estimated rise of 4,616 persons by 2041 using aggregated SA2 projections, representing a total increase of 11.0% over the 16 years.

Frequently Asked Questions - Population

What is the latest population estimate for the suburb of Baulkham Hills?
Total population for the suburb of Baulkham Hills was estimated to be approximately 37,841 as at May 26. This is based upon an estimated resident population of 37,404 from the ABS up to June 2025.
How has the population in the suburb of Baulkham Hills changed since 2021?
The suburb of baulkham hills has added approximately 426 people and shown a 1.14% increase from the 37,415 people recorded at the 2021 Census period.
What is the population density in the suburb of Baulkham Hills?
The population density in the suburb of Baulkham Hills is estimated at 2,778 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 Baulkham Hills?
Over the past 10 years, the population in the suburb of Baulkham Hills has shown a compound annual growth rate of 0.4% per annum.
What are the main drivers of population growth in the suburb of Baulkham Hills?
Population growth in the suburb of Baulkham Hills is driven by: Overseas migration (89.0%), Natural increase (11.0%), Interstate migration (0.0%). The primary driver is Overseas migration, contributing 89.0% of overall population gains.

Residential SupplyHousing Development & Building Approvals in Baulkham Hills

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749 new dwellings have been approved in Baulkham Hills over the past five years, an average of 149 a year. That is 4.0 approvals per 1,000 residents. Of the 168 dwellings approved in the latest reporting year, 38% were detached houses and the rest townhouses or apartments. Approvals are currently running at an annualised 90, well below 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

Based on AreaSearch assessments of ABS building approvals compiled from statistical sectors, Baulkham Hills records approximately 149 residential approvals annually, with an estimated 749 dwellings approved during the last 5 financial years (from FY-21 to FY-25) and 83 approvals during the current FY-26. Although the local population has decreased in recent times, the rate of construction has been relatively sufficient, which is advantageous for buyers, with new residences constructed at an average cost of $614,000, indicating a developer focus on high-end premium housing. Additionally, commercial building approvals have reached $130.4 million during this financial year, reflecting substantial local commercial investment.

Recently approved residential construction consists of 38.0% standalone houses and 62.0% medium and high-density options. This shift toward denser housing provides affordable points of entry and holds appeal for downsizers, real estate investors, and first-time buyers. This represents a clear shift from the current residential mix (where houses make up 75.0% of properties), indicating a decline in the availability of developable land and reflecting changing lifestyles and affordability constraints. With about 321 people for every residential approval, the area shows the structural features of a low density environment. Looking forward, the area is projected to increase by 4,179 residents by 2041 (calculated from the latest quarterly estimates by AreaSearch). Under current construction patterns, the supply of new housing is expected to comfortably satisfy local demand, creating favorable buying conditions and potentially supporting population growth above current forecasts.

Frequently Asked Questions - Development

How many dwelling approvals have occurred in the suburb of Baulkham Hills recently?
Dwelling approval activity in the the suburb of Baulkham Hills area has seen 233 residential approvals over the past two financial years, based on AreaSearch's SA2 aggregation method. The suburb of Baulkham Hills's current population of 37,841 has been supported by 149 approvals on average over recent years.
How does the suburb of Baulkham Hills's development activity compare to the broader region?
The suburb of Baulkham Hills has seen 0.4 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 321 people in the suburb of Baulkham Hills, compared to one for every 190 in the broader region.
Is the suburb of Baulkham Hills keeping up with housing demand?
With the population expected to increase by 4,179 people by 2041, around 1,393 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 Baulkham Hills?
Looking at development activity over the past five years, the suburb of Baulkham Hills's approval levels have been significantly below the yearly average of 149, showing a notable downturn in recent development.
How many dwellings will be needed to accommodate future population growth in the suburb of Baulkham Hills?
The population in the suburb of Baulkham Hills is expected to grow by 4,179 people by 2041, necessitating approximately 1,393 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 Baulkham Hills?
Over the past five years, the population in the suburb of Baulkham Hills has grown by approximately 4,964 people, while 749 residential approvals were recorded. This equates to a ratio of 6.6 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 Baulkham Hills?
With dwelling approval activity running at an average of 149 approvals per year and a population of 37,841, 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 4,179 people by 2041, around 1,393 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 Baulkham Hills

Development applications around Baulkham Hills

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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 Baulkham Hills

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AreaSearch tracks 11 current infrastructure and development projects inside Baulkham Hills, worth an estimated $1.25 billion. A further 96 sit in the immediately surrounding suburbs, taking the tracked pipeline within reach of the area to $45.4 billion. 31 are already under construction and 47 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 development initiatives represent key factors in local performance. AreaSearch has identified a total of 44 projects that are expected to impact the local area. Some of the major developments include Bellevue Residences, the 12-14 Hill Street Mixed Use Development, the 2-4 Old Northern Road Mixed-Use Development, and Norwest City, with detailed information on key projects provided below.

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Frequently Asked Questions - Infrastructure

What are some of the major infrastructure and planning changes likely to influence the suburb of Baulkham Hills?
Key infrastructure and planning changes likely to influence the suburb of Baulkham Hills include: Bellevue Residences (Construction); 12-14 Hill Street Mixed Use Development (Construction); 2-4 Old Northern Road Mixed-Use Development (Approved); Norwest City (Construction); and Max Ruddock Reserve Amenities Building and Viewing Platform (Construction). These projects represent significant developments that will shape the area's future infrastructure landscape.
What types of infrastructure projects are impacting the suburb of Baulkham Hills?
Infrastructure development impacting the suburb of Baulkham Hills spans multiple sectors including Communities, Communities, Precincts & Urban Renewal, and Residential Development, among others.
What is the scale of infrastructure investment impacting the suburb of Baulkham Hills?
Infrastructure investment analysis indicates substantial capital deployment exceeding $6.7 billion in projects that will impact the extended area, with a notable concentration of investment within the immediate the suburb of Baulkham Hills vicinity.
How does the suburb of Baulkham Hills's infrastructure development compare to other areas?
The suburb of Baulkham Hills ranks in the top 10% nationally for infrastructure development, reflecting exceptional investment activity compared to similar areas across the country.
12-14 Hill Street Mixed Use Development
Category: Communities
Stage: Construction | Est. Comp: 2027

A 6-storey shop top housing development in Baulkham Hills comprising three commercial tenancies (347.62 sq m) and 31 residential apartments (3x1 bedroom, 23x2 bedroom, 5x3 bedroom). The exterior features face brick, sandstone and exposed concrete feature walls with aluminium pergola structure and sliding horizontal/vertical privacy screens. Includes 3 levels of basement parking for 74 vehicles (13 commercial, 48 residential, 13 visitor spaces) and 213.39 sq m of deep soil landscaping. A Construction Certificate was issued in February 2025 for Stage 1 foundation works including site establishment, bulk excavation, shoring, piling, capping, basement drainage, and concrete structural elements up to and including the ground floor slab.

Communities

2-4 Old Northern Road Mixed-Use Development
Category: Communities
Stage: Approved | Est. Comp: 2027

An approved 8-storey mixed-use development comprising 44 residential apartments across levels 2-7, ground floor and level 1 retail and commercial tenancies, and 4 levels of basement car parking providing 137 spaces. The 29-metre mid-rise building includes outdoor entertaining areas and a rooftop terrace. A Section 4.55(2) modification to the original development approval (DA 2332/2018/HA) was lodged with The Hills Shire Council in December 2019. The project remains in pre-construction as of 2026.

Communities

Bellevue Residences
Category: Communities, Precincts & Urban Renewal
Stage: Construction | Est. Comp: 2030
Source / Links: Link 1   Link 2  

Bellevue Residences is a $480 million masterplanned community on a 12.5-hectare site in Norwest. The development features a diverse range of housing, including the Stage 1 'Aster Collection' of 14 premium land lots, plus 110 medium-density townhouses and 270 apartments across eight buildings. The project is designed to integrate with the heritage-listed St Joseph's Novitiate and is located within 600m of the Norwest Metro Station, providing high-quality residential living near the Norwest Business Park.

Communities, Precincts & Urban Renewal

10-16 Seven Hills Road Residential Development
Category: Residential Development
Stage: Under Assessment | Est. Comp: 2031
Source / Links: Link 1   

A residential development project recently expanded to comprise 118 apartments across a tiered 4 to 8-storey building. The proposal includes 19 dedicated affordable housing units and three levels of basement parking. Designed by Integrated Design Group for FAL Group, the project revitalizes a 3,944 sqm site near the Baulkham Hills Town Centre following a successful LEP amendment to increase building height and floor space ratio.

Residential Development

Pemulwuy Marketplace Retail Centre
Category: Retail
Stage: Completed | Est. Comp: 2010
Source / Links: Link 1   Link 2  

Neighbourhood shopping centre anchored by Woolworths with BWS, Priceline Pharmacy and 20+ specialty retailers, serving the Pemulwuy/Greystanes community with 300+ at-grade parking spaces.

Retail

Hills District Bowling Club Redevelopment
Category: Communities
Stage: Proposed | Est. Comp: 0
Source / Links: Link 1   

The Hills District Bowling Club (The Hills Club) proposed an 18-storey mixed-use redevelopment on its 1.34ha site in Baulkham Hills, comprising up to 196 apartments, 32 senior-living units, a new 3,100sqm clubhouse retaining at least two playing greens, and 152sqm of commercial and retail space. After three submissions to Hills Shire Council and a subsequent rezoning review, the Sydney Central City Planning Panel refused the proposal on 17 March 2023 on grounds of inconsistency with the Local Strategic Planning Statement regarding traffic and transport issues in Baulkham Hills Town Centre.No revised proposal has been lodged as of 2025.

Communities

Norwest City
Category: Communities, Precincts & Urban Renewal
Stage: Construction | Est. Comp: 2045
Source / Links: Link 1   Link 2  

A $3 billion+ masterplanned transformation by Mulpha, evolving the 377-hectare Norwest Business Park into a smart city and innovation hub. Stage 1 of Norwest Quarter (Banksia and Lacebark) was completed in December 2025, delivering 196 net-zero ready apartments with retail opening in Q2 2026. The $2.14 billion Norwest Marketown redevelopment received planning approval in September 2025 to create a mixed-use town center. The precinct features 46 hectares of open space and LoRaWAN smart infrastructure, targeting 60,000 workers by the 2040s.

Communities, Precincts & Urban Renewal

Nelson's Ridge Master Planned Community
Category: Communities, Precincts & Urban Renewal
Stage: Completed | Est. Comp: 2018
Source / Links: Link 1   Link 2  

Major master-planned community developed by Lend Lease on former quarry site, featuring residential areas, retail plaza, medical facilities, and retirement village. Includes approximately 1,200 homes across multiple stages.

Communities, Precincts & Urban Renewal

Jobs & IndustryEmployment Trends in Baulkham Hills

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19,704 residents of Baulkham Hills are employed, from a labour force of 20,421. Unemployment sits at 3.5%, with participation at 68.4%. Weighted for its industry mix, the area's sectors are forecast to grow about 7.0% nationally over five years. That reflects industry composition only and makes no allowance for local population growth. The working-day population is estimated at 33,876, about 90% 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

Local workforce data compiled by AreaSearch indicates that the area features a highly educated labor pool with significant representation in professional services, an unemployment rate of just 3.5%, and stable employment conditions over the preceding year. As of March 2026, there are 19,704 residents employed, with an unemployment rate 0.6% below the Greater Sydney average of 4.1%, and a labor participation rate similar to Greater Sydney's 69.1%. Census responses indicate that a high 52.5% of workers worked from home, though this figure should be interpreted alongside COVID-19 lockdown restrictions. Local employment is concentrated within health care & social assistance, professional & technical, and education & training fields.

The locality exhibits a strong specialization in finance & insurance, with its employment share reaching 1.3 times the regional average. Conversely, accommodation & food services accounts for only 4.0% of local employment, which is lower than the Greater Sydney average of 5.8%. Given the differences between the Census working population and resident population figures, this mostly residential neighborhood offers few local jobs. AreaSearch evaluations of SALM and ABS statistics compiled from broader regions show that the labor force decreased by 0.9% and total employment fell by 0.5% over the 12-month period, resulting in a 0.4 percentage point decline in unemployment. This contrasts with Greater Sydney, which recorded a 1.9% rise in employment, a 1.9% expansion of the labor force, and a minor reduction in unemployment. National forecasts released by Jobs and Skills Australia in May-25 provide further context on future employment demand. These five and ten-year projections have been applied to the local workforce structure to model potential growth. Nationwide employment is projected to expand by 6.6% over five years and 13.7% over ten years, though rates of change vary widely across sectors. Applying these industry projections to the local workforce mix suggests that local employment could grow by 7.0% over five years and 14.2% over ten years (note that this is a basic weighted extrapolation for demonstration purposes and does not incorporate local population projections).

Frequently Asked Questions - Employment

What is the employment situation in the suburb of Baulkham Hills?
As of March 2026, the suburb of Baulkham Hills has approximately 19,704 employed residents with an unemployment rate of 3.5%. 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 Baulkham Hills's unemployment rate compare to the broader region?
As of March 2026, the unemployment rate in the suburb of Baulkham Hills stands at 3.5%, which is 0.6 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 Baulkham Hills?
The employment landscape in the suburb of Baulkham Hills is dominated by several key sectors. The largest employers are health care & social assistance (14.2% of employment), professional & technical (12.1%), and education & training (10.0%). Other significant employers include finance & insurance and retail trade.
How has employment changed recently in the suburb of Baulkham Hills?
Over the past year to March 2026, the suburb of Baulkham Hills has experienced a decline in employment, with total jobs decreasing while the labour force decreased. 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 Baulkham Hills?
The workforce participation rate in the suburb of Baulkham Hills is 68.4%, 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 Baulkham Hills's employment market?
The suburb of baulkham hills shows notable specialization in finance & insurance, which employs 9.2% of the local workforce compared to 7.3% regionally. This moderate specialization indicates some local strength in the sector.
What are the employment growth prospects for the suburb of Baulkham Hills?
Based on Jobs and Skills Australia projections applied to the suburb of Baulkham Hills's industry mix, employment is expected to grow by 7.0% over the next five years and 14.2% 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 Baulkham Hills compare nationally?
The suburb of baulkham hills'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 Baulkham Hills?
Skilled workers will find excellent opportunities in the suburb of Baulkham Hills, with knowledge-intensive sectors comprising 48.4% of local employment. Key sectors for skilled workers include health care & social assistance (14.2%), professional & technical (12.1%), and education & training (10.0%). With projected employment growth of 7.0% over five years, demand for skilled workers is expected to remain strong.

EarningsHousehold Income in Baulkham Hills

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Median household income in Baulkham Hills is $2,474 a week (about $129,000 a year), with median personal income at $973 a week. ATO records put median taxable income at $60,846 a year against an average of $79,820. 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

According to the latest postcode level ATO statistics released for the financial year 2023, the median taxpayer income is $60,846, with an average taxpayer income of $79,820. These figures rank among the highest in the country, comparing to a median of $60,817 and an average of $83,003 across Greater Sydney. Adjusting for a Wage Price Index growth of 10.32% since financial year 2023 yields updated estimates of approximately $67,125 for the median and $88,057 for the average as of March 2026. Census findings place household, family, and individual incomes high nationally, falling between the 76th and 90th percentiles.

The weekly income band of $1,500 - 2,999 is the most common, accounting for 30.9% of residents (11,692 people), mirroring the regional rate of 30.9%. Higher earners are prominent, with 40.8% earning more than $3,000 weekly, which points to substantial household purchasing power. High housing costs demand 15.4% of total income, but solid earnings keep disposable income in the 89th percentile, and the local SEIFA ranking for income sits in the 9th decile.

Frequently Asked Questions - Income

What is the median taxable income in the suburb of Baulkham Hills?
Based on Wage Price Index adjustments to March 2026, the estimated median taxable income in the suburb of Baulkham Hills is approximately $67,125. The official ATO data from FY-23 recorded a median of $60,846.
What is the average taxable income in the suburb of Baulkham Hills?
Based on Wage Price Index adjustments to March 2026, the estimated average taxable income in the suburb of Baulkham Hills is approximately $88,057. The official ATO data from FY-23 recorded an average of $79,820.
How does the median taxable income in the suburb of Baulkham Hills compare to the region?
Based on Wage Price Index adjustments to March 2026, the estimated median taxable income in the suburb of Baulkham Hills is approximately $67,125 compared to $67,093 in Greater Sydney. The official ATO data from FY-23 shows $60,846 and $60,817 respectively.
How does the average taxable income in the suburb of Baulkham Hills compare to the region?
Based on Wage Price Index adjustments to March 2026, the estimated average taxable income in the suburb of Baulkham Hills is approximately $88,057 compared to $91,569 in Greater Sydney. The official ATO data from FY-23 shows $79,820 and $83,003 respectively.
What are the main income cohorts in the suburb of Baulkham Hills according to the 2021 Census?
As per the 2021 Census, the income bracket containing the largest proportion (~30.9% / 11,692 persons) of the suburb of Baulkham Hills's population is the $1,500 - 2,999 cohort.
How do the main income cohorts in the suburb of Baulkham Hills compare to the region?
The largest income cohort in the suburb of Baulkham Hills is the $1,500 - 2,999 group, representing about 30.9% 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 Baulkham Hills according to the 2021 Census?
The 2021 Census data indicates that the median household income in the suburb of Baulkham Hills is $2,474/wk.
What is the median family income in the suburb of Baulkham Hills according to the 2021 Census?
According to the 2021 Census, the median family income in the suburb of Baulkham Hills is $2,748/wk.
What is the median personal income in the suburb of Baulkham Hills according to the 2021 Census?
The 2021 Census shows that the median personal income in the suburb of Baulkham Hills is $973/wk.
How does the suburb of Baulkham Hills's income rank nationally?
The suburb of Baulkham Hills shows a median taxpayer income of $60,846 and an average of $79,820 according to the latest postcode level ATO data aggregated by AreaSearch for FY-23. This is extremely 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 $67,125 (median) and $88,057 (average) as of March 2026.
What is the disposable income in the suburb of Baulkham Hills?
The estimated disposable income in the suburb of Baulkham Hills is $9,065 per year according to AreaSearch analysis.
How does the suburb of Baulkham Hills's disposable income compare to the region?
The suburb of baulkham hills's disposable income is $9,065 compared to $7,412 for Greater Sydney, based on AreaSearch analysis.

Housing StockHousing & Dwellings in Baulkham Hills

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Baulkham Hills had 12,276 occupied dwellings at the 2021 Census, 75% detached houses and 11% apartments. 44% are owned with a mortgage, 23% rented and 33% owned outright. At that Census the median rent was $520 a week and the median mortgage repayment $2,600 a month, a total housing cost higher than 89% of areas nationally. Rent absorbs 21.0% of household income here and mortgage repayments 24.3%. Dwelling stock, tenure and housing costs are 2021 Census measures — the only source that counts dwellings at this boundary size.

Detail

The local housing profile at the time of the latest Census consisted of 75.4% separate houses and 24.6% other housing types (including townhouses, apartments, and alternative dwellings), compared to the metropolitan Sydney split of 55.9% houses and 44.1% other dwellings. Home ownership rates were higher than the Sydney metro average, standing at 33.3%, while the remaining properties were mortgaged (43.9%) or rented (22.8%). The median monthly mortgage payment was higher than the Sydney metro average at $2,600, while the median weekly rent was $520, compared to metropolitan Sydney figures of $2,427 and $470.

On a national level, mortgage repayments are higher than the Australian average of $1,863, and rent prices are above the national average of $375.

Frequently Asked Questions - Housing

What percentage of homes are owned vs rented in the suburb of Baulkham Hills?
In the suburb of Baulkham Hills, 33.3% of homes are owned outright, 43.9% are owned with a mortgage, and 22.8% are rented.
What percentage of dwellings in the suburb of Baulkham Hills are houses?
According to the latest data, 75.4% of dwellings in the suburb of Baulkham Hills are houses.
What percentage of dwellings in the suburb of Baulkham Hills are apartments or units?
In the suburb of Baulkham Hills, 11.3% of dwellings are apartments or units, with an additional 13.3% being semi-detached dwellings.
What is the level of outright home ownership in the suburb of Baulkham Hills?
Outright home ownership in the suburb of Baulkham Hills stands at 33.3%, compared to 28.7% in Greater Sydney.
What is the median monthly mortgage repayment in the suburb of Baulkham Hills?
The median monthly mortgage repayment in the suburb of Baulkham Hills is $2,600, compared to $2,427 in Greater Sydney.
What is the median weekly rent in the suburb of Baulkham Hills?
The median weekly rent in the suburb of Baulkham Hills is $520, compared to $470 in Greater Sydney.
What is the distribution of rental prices in the suburb of Baulkham Hills?
In the suburb of Baulkham Hills, 1.0% of rentals are $0-149/week, 6.4% are $150-349/week, 77.0% are $350-649/week, 15.0% are $650-949/week, and 0.5% are $950+/week.
What is the average monthly housing cost in the suburb of Baulkham Hills?
The aggregate monthly housing cost in the suburb of Baulkham Hills is $1,655, which represents the average monthly cost across all housing types.
What percentage of income do residents spend on housing in the suburb of Baulkham Hills?
In the suburb of Baulkham Hills, households with mortgages typically spend 24.3% of their income on mortgage repayments, while renters spend 21.0% of their income on rent.
How crowded are homes in the suburb of Baulkham Hills?
The average persons per bedroom ratio in the suburb of Baulkham Hills is 0.9, indicating the level of household density.
How does housing affordability in the suburb of Baulkham Hills compare to the region?
Housing affordability in the suburb of Baulkham Hills shows mortgage holders spending 24.3% 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 suburb of Baulkham Hills?
The dwelling mix in the suburb of Baulkham Hills consists of 75.4% detached houses, 13.3% semi-detached dwellings, 11.3% apartments, and 0.0% other dwelling types.
What is the weighted average housing cost based on tenure mix in the suburb of Baulkham Hills?
Based on the area's tenure composition, the weighted average monthly housing cost is approximately $1,655. This accounts for outright owners paying no housing costs, mortgage holders paying $2,600/month, and renters paying $2,252/month.
How affordable is housing in the suburb of Baulkham Hills relative to local incomes?
Housing in Baulkham Hills consumes approximately 15.4% of median household income ($10,712 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 Baulkham Hills?
Recent development applications in Baulkham Hills show attached dwellings contributing 59% of approvals compared to 25% of existing stock, while detached houses represent 41% of applications versus 75% of current dwellings. This suggests increasing densification. This area is seeing substantial increases in dwelling density compared to most Australian locations.

HouseholdsHousehold Composition in Baulkham Hills

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Baulkham Hills counted 12,276 households at the 2021 Census, averaging 3.0 people each. 50% are couples with children, more than in 95% of areas nationally, against 23% couples without children. 15% 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

Families make up the majority of households at 83.0%, consisting of 49.8% couples with children, 23.1% couples without children, and 9.5% single parent households. Non-family households represent the remaining 17.0%, with single person households accounting for 15.3% and group housing making up 1.6%. The median household size of 3.0 individuals is larger than the Greater Sydney average of 2.7.

Frequently Asked Questions - Households

How many households are in the suburb of Baulkham Hills?
As of the 2021 Census, the suburb of Baulkham Hills had 12,276 households. Based on population growth patterns, this has grown by approximately 1.1% to an estimated 12,416 households today.
What is the typical household size?
The median household size in the suburb of Baulkham Hills 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 83.0% of all households. The remaining households consist of lone person households (15.3%), group households (1.6%), and other household types (0.0%).
How are families structured in the area?
Among the 10,189 family households, 49.8% are couples with children, 23.1% are couples without children at home, and 9.5% are single parent families. This mix shapes local demand for schools, family services, and housing types.
How does the suburb of Baulkham Hills compare to regional household patterns?
Compared to Greater Sydney, the suburb of Baulkham Hills shows distinct household patterns. Family households are notably over-represented at 83.0% (versus 72.6% regionally). Conversely, lone person households are under-represented at 15.3% 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 Baulkham Hills 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 Baulkham Hills?
Marriage patterns reveal 60.5% of the adult population are currently married, while 26.5% 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 15.3% of all households in the suburb of Baulkham Hills, 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 1.6% 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 Baulkham Hills

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44.3% of adults in Baulkham Hills hold a university qualification, including 27.5% with a bachelor degree and 14.0% with postgraduate qualifications, higher than 95% of areas nationally. A further 15.7% hold a vocational qualification. 10 schools serve the area, with 8,119 enrolment places and an average ICSEA of 1,126 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

Qualifications among residents are higher than broader averages, with 44.3% of individuals aged 15+ holding a university degree, compared to 30.4% nationwide and 32.2% across NSW. This educational trend positions the area well for professional and knowledge-based career opportunities. Bachelor degrees are the most common at 27.5%, followed by postgraduate qualifications (14.0%) and graduate diplomas (2.8%). Vocational and technical training is also well represented, with 26.7% of residents aged 15+ holding trade credentials, consisting of advanced diplomas (11.0%) and certificates (15.7%). Enrollment rates in education are high, with 31.5% of residents currently undertaking formal study.

This student population includes 11.9% in primary school, 8.1% in high school, and 5.4% enrolled in tertiary institutions.

Frequently Asked Questions - Education

What percentage of people in the suburb of Baulkham Hills have university qualifications?
44.3% of people aged 15 and over in the suburb of Baulkham Hills have university qualifications, compared to 38.0% in the broader region.
What percentage of people in the suburb of Baulkham Hills have no formal qualifications?
29.2% of people aged 15 and over in the suburb of Baulkham Hills have no formal qualifications, compared to 34.2% regionally.
How does the suburb of Baulkham Hills's education level compare to national averages?
The suburb of baulkham hills ranks in the 95th 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 Baulkham Hills?
The most common qualifications in the suburb of Baulkham Hills are: Bachelor Degree (27.5%), Certificate (15.7%), Postgraduate (14.0%).
What proportion of the suburb of Baulkham Hills's population is currently attending educational institutions?
31.5% of the population in the suburb of Baulkham Hills is currently engaged in formal education, with 11.9% in primary school, 8.1% in secondary school, 5.4% at university.
What is the ICSEA score for schools in the suburb of Baulkham Hills?
The average ICSEA (Index of Community Socio-Educational Advantage) score for schools in the suburb of Baulkham Hills is 1126, indicating above-average socio-educational advantage compared to the national average of 1000.
How many schools are located within the suburb of Baulkham Hills?
There are 10 schools within the suburb of Baulkham Hills, with a combined enrollment of approximately 8,119 students.
What types of schools are available in the suburb of Baulkham Hills?
The suburb of baulkham hills includes 6 primary schools, 3 secondary schools, 1 combined school.

Schools Detail

AmenitiesServices & Amenities in Baulkham Hills

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Getting AroundTransport & Commuting in Baulkham Hills

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Public transport in Baulkham Hills reaches 287 stops on 150 routes, timetabled for about 9,600 services a week. The typical home sits about 150 m from its nearest stop. Buses carry the largest share of public transport commuters. Households keep an average of 1.5 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

An analysis of public transit options indicates that 287 transit stops are active in the suburb of Baulkham Hills, consisting of bus services. These stops support 150 unique routes, which combine to deliver 9,648 passenger trips per week. Transit access is rated as excellent, with residents living an average of 147 meters from their nearest stop. Because this is a residential suburb, most workers commute out of the area; private cars remain the main mode of travel at 84%, while 8% use buses. The average household has 1.5 vehicles, which is higher than the regional average.

A high proportion of residents, 52.5%, work from home (based on the 2021 Census, which may have been influenced by COVID-19 conditions). Transit service frequency averages 1,378 trips per day across all routes, which is equivalent to approximately 33 weekly trips per stop. The accompanying map displays the 100 closest stops relative to the center of the area.

Frequently Asked Questions - Transport

How many public transport stops are in Baulkham Hills?
There are 287 public transport stops within the suburb of Baulkham Hills.
How frequent are the transport services in Baulkham Hills?
the suburb of Baulkham Hills has 9,648 weekly trips across 150 routes, averaging 1,378 trips per day.
How far are residents from public transport in Baulkham Hills?
On average, residential properties are 147 meters from the nearest transport stop.

Transport Stops Detail

HealthcareHealth Services in Baulkham Hills

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75.8% of residents in Baulkham Hills report no long-term health condition, a healthier profile than 85% of areas nationally. 4.7% need daily assistance with core activities, and 58.5% hold private health cover. The standardised death rate runs at 4.0 per 1,000 residents. Health conditions, assistance needs and insurance are 2021 Census measures; the death rate comes from current ABS releases.

Detail

Health assessments indicate excellent physical wellbeing outcomes across the area, based on mortality rates and chronic condition analyses, with younger demographics showing a very low incidence of common medical conditions, and private health insurance rates reaching a high level of approximately 58% of the total population (22,118 people). Arthritis and asthma are the most common medical conditions, affecting 6.0% and 5.9% of residents, respectively, while 75.8% of the population reported no chronic health issues, compared to 74.6% across Greater Sydney. Residents aged 65 and over account for 16.5% of the local population (6,243 people), which is higher than the Greater Sydney level of 15.5%.

While health outcomes among seniors are strong, their national ranking is lower than that of the local younger population.

Frequently Asked Questions - Health

How many people in the suburb of Baulkham Hills have private health insurance?
Around 58.5% of people in the suburb of Baulkham Hills 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 Baulkham Hills?
In the suburb of Baulkham Hills, 4.7% 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 Baulkham Hills?
5.9% of people in the suburb of Baulkham Hills 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 Baulkham Hills?
Diabetes affects 4.2% of the the suburb of Baulkham Hills 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 Baulkham Hills?
3.2% of people in the suburb of Baulkham Hills have heart disease. Across the region of Greater Sydney, 3.2% of the population is affected by heart disease.
How does the suburb of Baulkham Hills compare to the region in terms of overall private health coverage?
In the suburb of Baulkham Hills, 58.5% 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 Baulkham Hills

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41.9% of Baulkham Hills residents were born overseas and 42.9% speak a language other than English at home, more culturally diverse than 85% of areas nationally. The largest reported ancestries are Australian (17.2%) and English (17.2%). Ancestry, language and country of birth are counted only by the Census, so these are 2021 figures.

Detail

The locality displays high levels of cultural diversity, with 41.9% of residents born outside Australia and 42.9% speaking a non-English language at home. Christianity is the main religion, practiced by 50.2% of the population. Hinduism shows a notable overrepresentation, accounting for 9.3% of the community compared to 5.2% across Greater Sydney. Regarding parental ancestry, the three most common backgrounds are Australian at 17.2%, English at 17.2%, and Chinese at 13.9%, which is higher than the regional average of 8.4%. Significant differences are also observed in other backgrounds: Korean background is overrepresented at 2.5% of the local population (compared to 1.1% regionally), Indian background is at 7.7% (compared to 3.6%), and Lebanese background accounts for 1.9% (compared to 2.6%).

Frequently Asked Questions - Diversity

What is the level of cultural diversity in the suburb of Baulkham Hills?
Baulkham Hills scores quite highly on cultural diversity, with 41.9% of its population born overseas and 42.9% speaking a language other than English at home.
What is the most common religion in the suburb of Baulkham Hills?
The main religion in Baulkham Hills was found to be Christianity, which makes up 50.2% of people in Baulkham Hills. However, the most apparent overrepresentation was in Hinduism, which comprises 9.3% of the population, compared to 5.2% across Greater Sydney.
What are the top countries of origin in the suburb of Baulkham Hills?
In terms of ancestry (country of birth of parents), the top three represented groups in Baulkham Hills are Australian, comprising 17.2% of the population, English, comprising 17.2% of the population, and Chinese, comprising 13.9% of the population, which is substantially higher than the regional average of 8.4%. Additionally, there are notable divergences in the representation of certain other ethnic groups: Korean is notably overrepresented at 2.5% of Baulkham Hills (vs 1.1% regionally), Indian at 7.7% (vs 3.6%) and Lebanese at 1.9% (vs 2.6%).
How does the percentage of people born overseas compare to the regional average?
41.9% of the the suburb of Baulkham Hills population was born overseas, compared to 40.5% regionally.
What percentage of the the suburb of Baulkham Hills population speaks a language other than English at home?
42.9% of the population in the suburb of Baulkham Hills speaks a language other than English at home, compared to 39.5% in the wider region.
How many people in the suburb of Baulkham Hills identify as Australian Aboriginal?
0.5% of the the suburb of Baulkham Hills population identifies as Australian Aboriginal, compared to 1.3% in the region.
What is the citizenship status of the population in the suburb of Baulkham Hills?
84.4% of the the suburb of Baulkham Hills population holds citizenship, compared to 80.8% in the wider region.

Age StructureAge Profile of Baulkham Hills

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The median resident of Baulkham Hills is 39. 21.5% 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 39 years in the suburb of Baulkham Hills is slightly higher than the Greater Sydney median of 37 and close to the national average of 38. Compared to Greater Sydney, children aged 5 - 14 are overrepresented (15.2% locally), while young adults aged 25 - 34 are underrepresented (8.8%). Post-2021 Census data indicates that the 15 to 24 age bracket grew from 10.9% to 12.7% of the population, whereas the 35 to 44 age bracket declined from 17.5% to 16.6%. Population projections for 2041 indicate demographic changes, with the 85+ cohort expected to grow by 142% (1,127 people) to reach 1,922 from 794.

General aging trends are projected to continue, with residents aged 65 and older representing 57% of total growth, while the 0 to 4 and 5 to 14 cohorts are expected to decrease in size.

Frequently Asked Questions - Age

What is the median age in the suburb of Baulkham Hills?
According to the latest data, the median age in the suburb of Baulkham Hills is 39 years.
How does the suburb of Baulkham Hills's median age compare to broader areas?
At 39 years, Baulkham Hills is 2 years older than the Greater Sydney average (37 years) and comparable to the national average (38 years).
What age groups are over-represented in the suburb of Baulkham Hills?
The most over-represented age group in the suburb of Baulkham Hills compared to the Greater Sydney region is the 5 - 14 group, making up 15.2% of the population.
What age groups are under-represented in the suburb of Baulkham Hills?
The most under-represented age group in the suburb of Baulkham Hills compared to the Greater Sydney region is the 25 - 34 group, making up 8.8% of the population.
Are there age groups with notable population variances?
Yes, certain age groups in the suburb of Baulkham Hills show significant variance compared to the Greater Sydney region. The most under-represented age group is 25-34 year-olds (8.8% vs 16.1%).
What is the percentage of children (0-14 years) in the suburb of Baulkham Hills?
The percentage of children aged 0-14 years in the suburb of Baulkham Hills is 20.3%.
What is the percentage of older people (65+ years) in the suburb of Baulkham Hills?
The percentage of people aged 65 and over in the suburb of Baulkham Hills is 16.5%.

Data & MethodBoundaries, Sources & Method for Baulkham Hills

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, State agencies, Local governments Daily Apr 2026 4 months ago all 11 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 Apr 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 — 216 validated new addresses here. The headline figure is therefore a current estimate for May 2026, not a 2021 count (37,415 at the 2021 Census → 37,841 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 (SAL10233). 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 Baulkham Hills 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 Baulkham Hills 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 Baulkham Hills 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 (Apr 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