Castle Hill - West

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

Castle Hill - West's population is 5,195 as of November 2025. This figure reflects an increase from 5,183 people recorded in the 2021 Census, a rise of 12 individuals (0.2%). The estimated resident population was 5,192 as of June 2024, with an additional 4 validated new addresses since the Census date contributing to this increase. This results in a population density ratio of 3,167 persons per square kilometer, placing Castle Hill - West in the upper quartile relative to national locations assessed by AreaSearch. Overseas migration accounted for approximately 77.1% of overall population gains during recent periods.

AreaSearch is using ABS/Geoscience Australia projections for each SA2 area, released in 2024 with a base year of 2022. For areas not covered by this data, AreaSearch utilises NSW State Government's SA2 level projections, released in 2022 with a base year of 2021. Growth rates by age group from these aggregations are applied to all areas for years 2032 to 2041. According to these projections, Castle Hill - West's population is expected to decline overall by 113 persons by 2041. However, specific age cohorts are anticipated to grow, notably the 75 to 84 age group, which is 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 averaged approximately two new dwelling approvals annually 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, reflecting 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, development activity has increased recently. Nationally, development activity is higher than in Castle Hill - West, suggesting market maturity and possible development constraints. Recent development has consisted entirely 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, which should reduce housing demand pressures and benefit potential buyers in the area.

Castle Hill - West has strong levels of nearby infrastructure activity, ranking in the top 40% nationally

Changes in local infrastructure significantly affect an area's performance. AreaSearch has identified 11 projects that may impact this region. Notable ones include the Castle Hill North Precinct Plan, Hills Showground Station Precinct, Dawes Avenue Residential Development, and Castle Towers Expansion. The following list details those likely to be 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 professional services well-represented. Its unemployment rate is 2.7%, with estimated employment growth of 0.6% in the past year as of September 2025.

There are 3,064 employed residents, with an unemployment rate of 1.5% below Greater Sydney's 4.2%. Workforce participation is high at 67.6%, compared to Greater Sydney's 60.0%. Key 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 versus Greater Sydney's 5.3%.

Employment opportunities locally may be limited based on Census data. From September 2024 to September 2025, employment levels increased by 0.6%, and labour force grew by 0.7%, keeping unemployment stable. In contrast, Greater Sydney had employment growth of 2.1% and unemployment rose slightly. State-level data from 25-Nov-25 shows NSW employment contracted by 0.03%, with a state unemployment rate of 3.9%. National forecasts suggest total employment should increase by 6.6% over five years and 13.7% over ten years, but industry-specific growth rates vary. Applying these projections to Castle Hill - West's employment mix indicates local employment could grow by 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

In AreaSearch's latest postcode level ATO data for financial year 2022, Castle Hill - West SA2 had a median income among taxpayers of $63,522 and an average of $93,735. Nationally, these figures are extremely high compared to Greater Sydney's median of $56,994 and average of $80,856. By September 2025, based on Wage Price Index growth of 12.61%, estimated incomes would be approximately $71,532 (median) and $105,555 (average). According to the 2021 Census, incomes in Castle Hill - West rank highly nationally, between the 83rd and 98th percentiles for households, families, and personal incomes. The income analysis shows that the $4000+ bracket dominates with 39.4% of residents (2,046 people), unlike surrounding regions where the $1,500 - 2,999 category predominates at 30.9%. Notably, 57.0% earn above $3,000 weekly, indicating prosperity and robust local economic activity. After housing costs, residents retain 86.7% of 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 ownership patterns similar to the broader region

Dwelling structure in Castle Hill - West, as evaluated at the latest Census, comprised 86.4% houses and 13.7% other dwellings. In comparison, Sydney metro had 78.2% houses and 21.8% other dwellings. Home ownership in Castle Hill - West was 35.6%, with the remainder being mortgaged (49.8%) or rented (14.6%). The median monthly mortgage repayment in the area was $3,000, similar to Sydney metro's average. However, the median weekly rent figure was recorded at $692, compared to Sydney metro's $580. Nationally, Castle Hill - West's 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 account for 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 constitute 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 3.0.

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 the latest data, 47.6% of residents aged 15 and above hold university qualifications, compared to 30.4% nationally and 32.2% statewide in NSW. This area's educational advantage is notable, with bachelor degrees being 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 among those aged 15 and above, with advanced diplomas making up 11.9% and certificates 10.7%.

Educational participation is high, with 31.6% of residents 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 21 active public transport stops operating. These stops are served by a mix of bus routes totaling 62 individual services. The combined weekly passenger trips across these routes amount to 2,723.

Residents' average proximity to the nearest transport stop is 186 meters, indicating excellent accessibility. On average, there are 389 daily trips across all routes, translating to approximately 129 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 across all age groups, with a very low prevalence of common health conditions. The rate of private health cover is notably high at approximately 68% (3,542 people), compared to Greater Sydney's 63.7%. Nationally, the average is 55.3%.

Asthma and arthritis are the most prevalent medical conditions in the area, affecting 5.3% and 4.9% of residents respectively. A significant majority, 78.7%, report being completely free from medical ailments, compared to Greater Sydney's 75.9%. The percentage of residents aged 65 and over is 17.3% (899 people), lower than Greater Sydney's 18.9%. Despite this, health outcomes among seniors are strong and largely align with the general population's health profile.

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 a high level of 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 the population. Hinduism, however, is overrepresented compared to Greater Sydney, making up 8.9% of Castle Hill-West's population versus 8.6%.

The top three ancestry groups are Other (17.1%), Chinese (15.0%), and Australian (13.8%). Notably, Sri Lankan, Korean, and Indian ethnicities are also overrepresented in Castle Hill-West compared to regional averages.

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 somewhat older than Australia's median of 38. Compared to Greater Sydney, the 55-64 cohort is notably over-represented at 13.8% locally, while the 25-34 age group is under-represented at 8.7%. Post the 2021 Census, the 75-84 age group grew from 3.4% to 5.7%, and the 65-74 cohort increased from 9.3% to 10.7%. Conversely, the 5-14 age group declined from 14.4% to 12.9%, and the 45-54 group decreased from 16.3% to 15.2%. Demographic modeling indicates that Castle Hill - West's age profile will significantly evolve by 2041, with the 75-84 cohort projected to grow by 85%, adding 251 residents to reach 547. The demographic aging trend continues as residents aged 65 and older represent all anticipated growth, while population declines are projected for the 0-4 and 55-64 cohorts.