Castle Hill - West

Castle Hill - West has shown very soft population growth performance across periods assessed by AreaSearch

As of Feb 2026, Castle Hill - West's population is approximately 5,195, showing a rise of 12 people since the 2021 Census which recorded 5,183 residents. This increase is inferred from ABS estimated resident population of 5,192 as of June 2024 and four additional validated addresses since the Census date. The population density stands at 3,167 persons per square kilometer, placing it in the upper quartile nationally according to AreaSearch's assessment. Overseas migration accounted for approximately 77.1% of recent population gains. AreaSearch uses ABS/Geoscience Australia projections for each SA2 area released in 2024 with a 2022 base year, and NSW State Government's SA2 level projections for areas not covered by this data, released in 2022 with a 2021 base year.

These projections indicate an overall population decline of 113 persons by 2041, but with growth anticipated in specific age cohorts, notably the 75 to 84 age group expected to expand by 287 people over this period.

The level of residential development activity in Castle Hill - West is very low in comparison to the average area assessed nationally by AreaSearch

Castle Hill - West has averaged approximately two new dwelling approvals per year over the past five financial years, totalling 12 homes. As of FY-26, zero approvals have been recorded to date. The area's population has decreased during this period, suggesting that new supply has likely kept pace with demand, providing good options for buyers. The average expected construction cost value of new homes is $713,000, indicating a focus on the premium segment with upmarket properties.

In FY-26, $162,000 in commercial development approvals have been recorded, implying a predominantly residential focus. Compared to Greater Sydney, Castle Hill - West has significantly less development activity, which typically strengthens demand and prices for existing properties. However, there has been an increase in development activity recently. Nationally, development activity is higher than in Castle Hill - West, reflecting market maturity and possible development constraints. All recent development has consisted of detached dwellings, maintaining the area's traditional suburban character with a focus on family homes appealing to those seeking space.

With approximately 1168 people per approval, Castle Hill - West shows a mature, established area. Population projections indicate stability or decline, suggesting reduced housing demand pressures in the future, which would benefit potential buyers.

Castle Hill - West has emerging levels of nearby infrastructure activity, ranking in the 37thth percentile nationally

Changes to local infrastructure significantly influence an area's performance. AreaSearch has identified 11 projects likely to impact the area. Notable projects include Castle Hill North Precinct Plan, Hills Showground Station Precinct, Dawes Avenue Residential Development, and Castle Towers Expansion. The following list details those most relevant:.

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

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Employment conditions in Castle Hill - West demonstrate strong performance, ranking among the top 35% of areas assessed nationally

Castle Hill - West has an educated workforce with strong professional services representation, unemployment rate of 2.7%, and estimated employment growth of 0.6% in the past year as of September 2025. There are 3,064 residents employed, with an unemployment rate 1.5% lower than Greater Sydney's 4.2%. Workforce participation is at 72.2%.

A high 54.6% work from home, potentially influenced by Covid-19 lockdowns. Leading industries include professional & technical (strongly specialized), health care & social assistance, and education & training. Transport, postal & warehousing is under-represented with only 3.3% of the workforce compared to Greater Sydney's 5.3%. Employment opportunities locally appear limited based on Census data.

Between September 2024 and 2025, employment levels increased by 0.6%, labour force by 0.7%, keeping unemployment relatively stable at 1.9%. In contrast, Greater Sydney saw employment growth of 2.1% and labour force growth of 2.4%, with unemployment rising to 4.4%. Jobs and Skills Australia's national employment forecasts from May-25 project national employment growth of 6.6% over five years and 13.7% over ten years, varying by industry sector. Applying these projections to Castle Hill - West's employment mix suggests local employment should increase by 7.1% over five years and 14.4% over ten years, assuming constant population projections for illustrative purposes.

The economic profile demonstrates exceptional strength, placing the area among the top 10% nationally based on comprehensive AreaSearch income analysis

AreaSearch's latest postcode level ATO data for financial year 2023 shows Castle Hill - West SA2 had a median income of $66,882 and an average income of $94,161 among taxpayers. Nationally, these figures are extremely high. In Greater Sydney, the median is $60,817 with an average of $83,030. Based on Wage Price Index growth of 8.86% since financial year 2023, estimates for September 2025 would be approximately $72,808 (median) and $102,504 (average). The 2021 Census places household, family, and personal incomes in Castle Hill - West between the 83rd and 98th percentiles nationally. Income analysis reveals that 39.4% of residents earn over $4,000 weekly, with a significant 57.0% earning above $3,000 weekly. After housing costs, residents retain 86.7% of their income, reflecting strong purchasing power. The area's SEIFA income ranking places it in the 10th decile.

Castle Hill - West is characterized by a predominantly suburban housing profile, with above-average rates of outright home ownership

In Castle Hill - West, as per the latest Census evaluation, 86.4% of dwellings were houses, with the remaining 13.7% being other types such as semi-detached homes, apartments, and 'other' dwellings. This is in contrast to Sydney metropolitan areas which had 55.9% houses and 44.1% other dwellings. Home ownership in Castle Hill - West stood at 35.6%, with mortgaged properties making up 49.8% and rented dwellings accounting for 14.6%. The median monthly mortgage repayment in the area was $3,000, higher than Sydney's average of $2,427. Weekly rent in Castle Hill - West was recorded at $692, compared to Sydney's $470. Nationally, mortgage repayments were significantly higher than the Australian average of $1,863, and rents were substantially above the national figure of $375.

Castle Hill - West features high concentrations of family households, with a higher-than-average median household size

Family households constitute 90.7 percent of all households, including 59.3 percent couples with children, 21.5 percent couples without children, and 8.8 percent single parent families. Non-family households account for the remaining 9.3 percent, with lone person households at 8.9 percent and group households comprising 0.9 percent of the total. The median household size is 3.3 people, which is larger than the Greater Sydney average of 2.7.

Educational achievement in Castle Hill - West places it within the top 10% nationally, reflecting strong academic performance and high qualification levels across the community

Educational attainment in Castle Hill - West is significantly higher than broader benchmarks. As of 2016, 47.6% of residents aged 15 years and over held university qualifications, compared to the national average of 30.4% and the NSW average of 32.2%. This high level of educational attainment positions the area favourably for knowledge-based opportunities. Bachelor degrees are the most common at 30.4%, followed by postgraduate qualifications (14.7%) and graduate diplomas (2.5%).

Vocational pathways account for 22.6% of qualifications among those aged 15 years and over, with advanced diplomas making up 11.9% and certificates 10.7%. Educational participation is notably high in the area, with 31.6% of residents currently enrolled in formal education as of 2016. This includes 10.1% enrolled in secondary education, 9.6% in primary education, and 7.2% pursuing tertiary education.

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

Castle Hill - West has 26 active public transport stops, all of which are bus stops. These stops are served by 60 different routes, together providing 4,029 weekly passenger trips. The area's transport accessibility is rated as excellent, with residents typically living just 185 meters from the nearest stop. Most residents commute outwards daily. Car remains the primary mode of travel for 88% of residents, while 6% use trains. On average, there are 1.9 vehicles per dwelling, higher than the regional average.

According to the 2021 Census, 54.6% of residents work from home, which may be due to COVID-19 conditions. Each route averages about 575 trips daily, resulting in approximately 154 weekly trips per individual stop.

Castle Hill - West's residents boast exceedingly positive health performance metrics with very low prevalence of common health conditions across all age groups

Castle Hill - West shows excellent health outcomes according to AreaSearch's analysis. Mortality rates and chronic condition prevalence were very low across all age groups. Private health cover was exceptionally high at 68%, compared to Greater Sydney's 59.9% and the national average of 55.7%.

The most prevalent conditions were asthma (5.3%) and arthritis (4.9%), with 78.7% of residents reporting no medical ailments, higher than Greater Sydney's 74.6%. Seniors aged 65 and over make up 18.3%, compared to Greater Sydney's 15.4%. While health outcomes for seniors are strong, they rank lower nationally than the broader population.

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

Castle Hill-West has high cultural diversity, with 46.7% of its population born overseas and 47.0% speaking a language other than English at home. Christianity is the predominant religion in Castle Hill-West, comprising 53.4% of its population. Hinduism is notably overrepresented, making up 8.9% compared to 5.2% across Greater Sydney.

The top three ancestry groups are Other (17.1%), Chinese (15.0%, substantially higher than the regional average of 8.4%), and Australian (13.8%). Sri Lankan (2.0% vs 0.3%), Korean (2.4% vs 1.1%), and Indian (8.0% vs 3.6%) ethnic groups are also notably overrepresented in Castle Hill-West compared to the regional averages.

Castle Hill - West's population is slightly older than the national pattern

Castle Hill - West's median age is 41 years, significantly higher than Greater Sydney's average of 37 years and Australia's median of 38 years. The 55-64 age group is notably over-represented at 14.1%, while the 25-34 age group is under-represented at 8.3%. According to the 2021 Census, the 75 to 84 age group has grown from 3.4% to 6.3%, and the 65 to 74 cohort increased from 9.3% to 10.9%. Conversely, the 5 to 14 age group has declined from 14.4% to 12.7%, and the 45 to 54 group dropped from 16.3% to 14.9%. Demographic modeling suggests that Castle Hill - West's age profile will change significantly by 2041. The 75 to 84 cohort is projected to grow by 66%, adding 218 residents to reach 547. This growth is driven entirely by the aging of existing residents, with no population increases anticipated for younger cohorts.