Castle Hill - West

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

As of November 2025, Castle Hill - West's population is approximately 5,195, showing an increase of 12 people since the 2021 Census, which recorded a population of 5,183. This growth is inferred from ABS estimates: 5,192 in June 2024 and four additional validated addresses since the Census date. The population density is around 3,167 persons per square kilometer, placing it in the upper quartile nationally according to AreaSearch assessments. Overseas migration contributed approximately 77.1% of recent 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 where applicable, using growth rates by age group from these aggregations for years 2032 to 2041.

By 2041, the population is projected to decline by 113 persons overall but increase in specific age cohorts, notably the 75-84 age group by 287 people.

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 annually over the past five financial years, totalling 12 homes. As of FY-26, zero approvals have been recorded to date. The population has decreased during this period, suggesting that new supply has likely kept pace with demand, providing good options for buyers. The average construction cost value of new homes is $876,000, indicating a focus on premium properties by developers.

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. All recent development has consisted of detached dwellings, maintaining the area's traditional suburban character with a focus on family homes.

With approximately 1168 people per approval, Castle Hill - West shows characteristics of 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 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 likely to impact this region. Notable ones include Castle Hill North Precinct Plan, Hills Showground Station Precinct, Dawes Avenue Residential Development, and Castle Towers Expansion. The following details those considered most relevant.

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

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Castle Hill - West ranks among the top 25% of areas assessed nationally for overall employment performance

Castle Hill - West has an educated workforce with strong professional services representation. Its unemployment rate was 2.7% in June 2025, below Greater Sydney's 4.2%.

Employment growth over the past year was estimated at 2.9%. As of June 2025, 3,117 residents were employed, with a participation rate of 67.6%, higher than Greater Sydney's 60.0%. Leading industries include professional & technical (1.3 times regional level), health care & social assistance, and education & training. Transport, postal & warehousing is under-represented at 3.3% compared to Greater Sydney's 5.3%.

Employment opportunities locally may be limited as indicated by Census data. Between June 2024 and June 2025, employment levels increased by 2.9%, labour force by 3.1%, raising unemployment rate by 0.2 percentage points. In comparison, Greater Sydney had employment growth of 2.6% and unemployment rise of 0.3 percentage points. State-level data to Nov-25 shows NSW employment contracted by 0.03%, with an unemployment rate of 3.9%. National forecasts from May-25 project total employment growth of 6.6% over five years and 13.7% over ten years. Applying these projections to Castle Hill - West's industry mix suggests local employment should increase by 7.1% over five years and 14.4% over ten years, though this is a simple extrapolation and does not account for localised population projections.

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 2022 shows Castle Hill - West SA2 had a median income of $63,522 and an average of $93,735. Nationally, these figures are extremely high. Greater Sydney's median was $56,994 with an average of $80,856. By September 2025, estimates suggest the median will be approximately $71,532 and the average $105,555, based on Wage Price Index growth of 12.61% since financial year 2022. 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 (2,046 people) earn over $4,000 weekly, contrasting with the surrounding region where the $1,500-$2,999 bracket predominates at 30.9%. Notably, 57.0% earn above $3,000 weekly. After housing costs, residents retain 86.7% of their 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 ownership patterns similar to the broader region

The dwelling structure in Castle Hill - West, as per the latest Census, consisted of 86.4% houses and 13.7% other dwellings (semi-detached, apartments, 'other' dwellings). This compares to Sydney metro's 78.2% houses and 21.8% other dwellings. Home ownership in Castle Hill - West stood at 35.6%, similar to Sydney metro, with the rest being mortgaged (49.8%) or rented (14.6%). The median monthly mortgage repayment was $3,000, aligning with Sydney metro's average. The median weekly rent was $692, compared to Sydney metro's $580. Nationally, Castle Hill - West's median monthly mortgage repayments were higher at $3,000 versus 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% 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% of the total. The median household size is 3.3 people, which is 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 notably 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% in NSW. Bachelor degrees are 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 and above, with advanced diplomas at 11.9% and certificates at 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

Transport analysis shows 21 active transport stops operating in Castle Hill - West area. These stops serve a mix of bus routes totaling 62 individual services. This results in 2,723 weekly passenger trips combined.

Transport accessibility is rated excellent with residents located on average 186 meters from the nearest stop. Service frequency averages 389 trips per day across all routes, equating to approximately 129 weekly trips per 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, with very low prevalence of common conditions across all ages. Approximately 68% of its total population (3,542 people) have private health cover, compared to Greater Sydney's 63.7% and the national average of 55.3%. The most prevalent conditions are asthma (5.3%) and arthritis (4.9%), with 78.7% reporting no medical ailments, higher than Greater Sydney's 75.9%.

In this area, 17.3% of residents are aged 65 and over (899 people), lower than Greater Sydney's 18.9%. Seniors' health outcomes align with the general population's 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 high cultural diversity, with 46.7% born overseas and 47.0% speaking a language other than English at home. Christianity is the main religion, at 53.4%. Hinduism is overrepresented at 8.9%, compared to Greater Sydney's 8.6%.

Top ancestry groups are Other (17.1%), Chinese (15.0%), and Australian (13.8%). Sri Lankan (2.0% vs regional 1.0%), Korean (2.4% vs 2.3%), and Indian (8.0% vs 7.5%) groups are notably diverged in representation.

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 and slightly older than Australia's median of 38. Comparing it with Greater Sydney, the 55-64 cohort is notably over-represented at 13.8%, while the 25-34 age group is under-represented at 8.7%. Post the 2021 Census, the 75 to 84 age group grew from 3.4% to 5.7%, and the 65 to 74 cohort increased from 9.3% to 10.7%. Conversely, the 5 to 14 age group decreased from 14.4% to 12.9%, and the 45 to 54 group dropped from 16.3% to 15.2%. By 2041, demographic modeling projects significant changes in Castle Hill - West's age profile. The 75 to 84 cohort is projected to grow by 85%, adding 251 residents to reach 547. This growth is part of an overall aging trend where residents aged 65 and older represent all anticipated population growth. Conversely, declines are projected for the 0 to 4 and 55 to 64 age cohorts.