Castle Hill - West

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

Based on AreaSearch's analysis, Castle Hill - West's population is around 5195 as of November 2025. This reflects an increase of 12 people from the 2021 Census figure of 5183, inferred from ABS estimated resident population of 5192 in June 2024 and additional four validated new addresses since the Census date. This gives a population density ratio of 3167 persons per square kilometer, placing it in the upper quartile nationally according to AreaSearch's assessment. Overseas migration contributed approximately 77.1% of recent overall population gains. AreaSearch uses ABS/Geoscience Australia projections for each SA2 area released in 2024 with a base year of 2022, and NSW State Government's SA2 level projections for areas not covered by this data, released in 2022 with a base year of 2021.

These projections indicate an overall population decline to 5082 by 2041, but growth is anticipated in specific age cohorts, notably the 75-84 age group projected 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, from 2016 to 2020. This totals twelve homes approved during this period. As of June 2021, no new dwelling approvals have been recorded in FY-26. The population has decreased slightly during this time, suggesting that the new supply has kept pace with demand, providing good options for buyers.

The average expected construction cost value of these new homes is $713,000, indicating a focus on premium segment properties. In comparison to Greater Sydney, Castle Hill - West has significantly less development activity. This scarcity can strengthen demand and prices for existing properties. However, there has been an increase in development activity in recent periods. The area has seen $162,000 in commercial development approvals this financial year, suggesting a predominantly residential focus.

Nationally, Castle Hill - West's development activity is lower, reflecting market maturity and possible development constraints. Recent development has exclusively consisted of detached dwellings, maintaining the area's traditional suburban character with an emphasis on family homes that appeal to those seeking space. With approximately 1168 people per approval, Castle Hill - West demonstrates a mature, established area. Population projections indicate stability or decline, which should reduce housing demand pressures and benefit potential buyers in the future.

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

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

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 a highly educated workforce with strong representation in professional services. Its unemployment rate is 2.7%, with an estimated employment growth of 0.6% over the past year as of September 2025. In this period, 3,064 residents were employed while the unemployment rate was 1.5% lower than Greater Sydney's rate of 4.2%.

Workforce participation stood at 72.5%, slightly higher than Greater Sydney's 70.0%. According to Census responses, 54.6% of residents worked from home, potentially influenced by Covid-19 lockdowns. The leading employment industries among residents are professional & technical, health care & social assistance, and education & training. Castle Hill - West shows a particularly strong specialization in professional & technical services with an employment share of 1.3 times the regional level.

Conversely, transport, postal & warehousing is under-represented, with only 3.3% of Castle Hill - West's workforce compared to Greater Sydney's 5.3%. The area appears to offer limited local employment opportunities as indicated by the count of Census working population versus resident population. Between September 2024 and September 2025, employment levels increased by 0.6% while labour force grew by 0.7%, keeping the unemployment rate relatively stable at around 1.5%. In contrast, Greater Sydney recorded employment growth of 2.1% and labour force growth of 2.4%, with unemployment rising slightly to 4.4%. Jobs and Skills Australia's national employment forecasts from May-25 suggest that over five years, national employment is projected to expand by 6.6%, and over ten years, it is forecast to grow by 13.7%. Applying these projections to Castle Hill - West's employment mix indicates a potential local employment increase of 7.1% over five years and 14.4% over ten years.

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

AreaSearch released postcode-level ATO data for financial year 2023. Castle Hill - West SA2's median income among taxpayers was $66,882, with an average of $94,161. Nationally, these figures are high compared to Greater Sydney's median of $60,817 and average of $83,003. As of September 2025, estimated incomes would be approximately $72,808 (median) and $102,504 (average), based on Wage Price Index growth of 8.86%. The 2021 Census shows household, family, and personal incomes in Castle Hill - West rank highly nationally, between the 83rd and 98th percentiles. Income analysis reveals that 39.4% of residents earn over $4,000 weekly (2,046 people), contrasting with surrounding regions where the $1,500 - $2,999 category predominates at 30.9%. Notably, 57.0% of residents earn above $3,000 weekly. After housing costs, residents retain 86.7% of income, indicating 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 13.7% being other types such as semi-detached homes, apartments, and others. 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 accounting for 49.8% and rented ones making up 14.6%. The median monthly mortgage repayment in the area was $3,000, surpassing Sydney's average of $2,427. Meanwhile, the median weekly rent figure 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, while 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% of all households, including 59.3% couples with children, 21.5% couples without children, and 8.8% single parent families. Non-family households account for the remaining 9.3%, with lone person households at 8.9% and group households comprising 0.9%. The median household size is 3.3 people, 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 shows a significant advantage with 47.6% of residents aged 15 and above holding university qualifications, compared to 30.4% nationally and 32.2% statewide (NSW). Bachelor degrees are the most common at 30.4%, followed by postgraduate qualifications at 14.7% and graduate diplomas at 2.5%. Vocational pathways account for 22.6% of qualifications, with advanced diplomas at 11.9% and certificates at 10.7%. Educational participation is high, with 31.6% currently enrolled in formal education.

This includes 10.1% 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 that collectively facilitate 4,029 weekly passenger trips. The area's transport accessibility is rated excellent, with residents on average living 185 meters from the nearest transport stop. Most residents commute outwards daily. Cars remain the primary mode of transportation, used by 88% of residents, while 6% use trains. On average, there are 1.9 vehicles per dwelling in the area, which is above the regional average.

According to the 2021 Census, 54.6% of residents work from home, a figure that may be influenced by COVID-19 conditions. Across all routes, service frequency averages 575 trips per day, equating to 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 of mortality rates and chronic condition prevalence. The area has a very low prevalence of common health conditions across all age groups. Approximately 68% of the total population (3,506 people) have private health cover, which is higher than Greater Sydney's 59.9%.

Nationally, this figure stands at 55.7%. The most prevalent medical conditions in the area are asthma and arthritis, affecting 5.3% and 4.9% of residents respectively. Notably, 78.7% of residents claim to be completely free from medical ailments, compared to 74.6% across Greater Sydney. In terms of demographics, 17.3% of residents are aged 65 and over (899 people), which is higher than Greater Sydney's 15.3%. Despite this, health outcomes among seniors in the area rank lower nationally compared to 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%. Hinduism is 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%). Notable ethnic group divergences include Sri Lankan at 2.0% (vs 0.3% regionally), Korean at 2.4% (vs 1.1%), and Indian at 8.0% (vs 3.6%).

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

Castle Hill - West's median age is 41 years, which is significantly higher than Greater Sydney's average of 37 and slightly above Australia's median of 38. Compared to Greater Sydney, Castle Hill - West has a notably higher proportion of the 55-64 cohort (13.8%) and a lower proportion of the 25-34 age group (8.7%). According to the 2021 Census, the population aged 75 to 84 grew from 3.4% to 5.7%, while those aged 65 to 74 increased from 9.3% to 10.7%. Conversely, the proportion of residents aged 5 to 14 decreased from 14.4% to 12.9%, and the 45-54 age group fell from 16.3% to 15.2%. Demographic modeling indicates that Castle Hill - West's age profile will change significantly by 2041, with the 75 to 84 cohort projected to grow by 85%, adding 251 residents to reach 547. This growth is driven entirely by residents aged 65 and older. Conversely, population declines are projected for those aged 0 to 4 and 55 to 64.