Castle Hill - West

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

Castle Hill - West's population is approximately 5,215 as of May 2026. This figure represents an increase from the 2021 Census count of 5,183 people, reflecting a rise of 32 individuals (0.6%). The change is inferred from ABS's estimated resident population of 5,209 in June 2025 and five additional validated addresses since the Census date. This results in a population density ratio of 3,179 persons per square kilometer, placing Castle Hill - West in the upper quartile relative to national locations assessed by AreaSearch. Overseas migration contributed roughly 82.9% of overall population gains during recent periods, driving primary growth in the area.

AreaSearch employs ABS/Geoscience Australia projections for each SA2 area, released in 2024 with a base year of 2022. For areas not covered by this data, NSW State Government's SA2 level projections from 2022, using a base year of 2021, are utilised. Growth rates by age group from these aggregations are applied to all areas for years 2032 to 2041. According to these projections, the area's population is expected to decline by 75 persons by 2041. However, specific age cohorts such as the 75 to 84 age group are anticipated to grow, with a projected increase of 256 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 so far, one approval has been recorded. The population has fallen during this period, suggesting that new supply has likely kept pace with demand, providing good choice for buyers. New homes are being constructed at an average expected construction cost value of $713,000, indicating a focus on the premium segment with upmarket properties.

This financial year, $162,000 in commercial development approvals have been recorded, suggesting 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 picked up in recent periods. Nationally, development activity is higher than in Castle Hill - West, reflecting market maturity and possible development constraints. Recent development has been entirely comprised 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 could benefit potential buyers.

Castle Hill - West has emerging levels of nearby infrastructure activity, ranking in the 34thth percentile nationally

Changes to local infrastructure significantly influence an area's performance. Ten projects identified by AreaSearch are expected to impact this region. Notable initiatives comprise Hills Showground Station Precinct, Woodward Indoor Sports Complex, Skyview Apartment Complex, and Castle Towers Expansion.

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

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Employment performance in Castle Hill - West exceeds national averages across key labour market indicators

Castle Hill - West has a highly educated workforce with professional services showing strong representation. The unemployment rate is 3.0%. As of December 2025, there are 3,046 residents in work, with an unemployment rate of 1.1% below Greater Sydney's rate of 4.2%.

Workforce participation is at 71.0%, compared to Greater Sydney's 68.8%. According to Census responses, 54.6% of residents work from home, potentially influenced by Covid-19 lockdowns. Key industries of employment include professional & technical, health care & social assistance, and education & training. The area has a notable concentration in professional & technical services, with employment levels at 1.3 times the regional average.

Transport, postal & warehousing has limited presence, with 3.3% employment compared to 5.3% regionally. The predominantly residential area offers limited local employment opportunities, indicated by the count of Census working population versus resident population. Between December 2024 and December 2025, the labour force decreased by 0.2%, while employment declined by 0.8%, leading to a rise in unemployment rate by 0.6 percentage points. In contrast, Greater Sydney experienced employment growth of 2.2% and labour force growth of 2.3%. Jobs and Skills Australia's national employment forecasts from May-25 estimate that national employment will expand by 6.6% over five years and 13.7% over ten years. 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, based on a simple weighting extrapolation 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 that Castle Hill - West SA2 has extremely high incomes nationally. The median income is $66,882 and the average income stands at $94,161. This contrasts with Greater Sydney's figures of a median income of $60,817 and an average income of $83,003. Based on Wage Price Index growth of 10.32% since financial year 2023, current estimates would be approximately $73,784 (median) and $103,878 (average) as of March 2026. Census 2021 income data shows that incomes in Castle Hill - West rank highly nationally, between the 83rd and 98th percentiles for household, family, and personal incomes. The $4000+ earnings band captures 39.4% of the community (2,054 individuals), differing from patterns across the surrounding region where $1,500 - 2,999 dominates with 30.9%. Economic strength is evident through 57.0% of households achieving high weekly earnings exceeding $3,000, supporting elevated consumer spending. 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 above-average rates of outright home ownership

At the latest Census, dwelling structures in Castle Hill - West comprised 86.4% houses and 13.7% other dwellings (semi-detached, apartments, 'other' dwellings), compared to Sydney metro's 55.9% houses and 44.1% other dwellings. Home ownership within Castle Hill - West was at 35.6%, with the remainder of dwellings either mortgaged (49.8%) or rented (14.6%). The median monthly mortgage repayment in the area was $3,000, while the median weekly rent figure was recorded at $692. Nationally, Castle Hill - West's mortgage repayments are significantly higher than the Australian average of $1,863, while rents are 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 comprise the remaining 9.3%, with lone person households at 8.9% and group households making up 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 is notably high, with 47.6% of residents aged 15 years and above holding university qualifications as of the latest data available. This figure exceeds both national (30.4%) and state-wide (32.2%, NSW) averages. 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 above, with advanced diplomas making up 11.9% and certificates 10.7%.

Educational participation is significantly high in the area, with 31.6% of residents currently enrolled in formal education as per recent records. 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 serving buses. These stops are covered by 60 different routes that collectively facilitate 4,029 weekly passenger trips. The accessibility of these stops is rated excellent, with residents typically residing just 185 meters from the nearest one. Most residents here commute outward daily due to its residential nature. Cars remain the primary mode of transport for 88% of residents, while only 6% use trains. On average, there are 1.9 vehicles per dwelling in this area, higher than the regional norm.

According to the 2021 Census, a significant 54.6% of residents work from home, possibly due to COVID-19 conditions. The service frequency averages 575 trips daily across all routes, translating 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 based on AreaSearch's assessment. Mortality rates and chronic condition prevalence are very low across all age groups. Private health cover is exceptionally high at approximately 68% of the total population (3,520 people), compared to 59.9% in Greater Sydney and a national average of 55.7%.

The most common medical conditions are asthma and arthritis, affecting 5.3 and 4.9% of residents respectively. A total of 78.7% of residents declare themselves completely clear of medical ailments, compared to 74.6% in Greater Sydney. The area has 18.5% of residents aged 65 and over (966 people), higher than the 15.5% in Greater Sydney. Health outcomes among seniors are strong but 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 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. The predominant religion in Castle Hill-West is Christianity, comprising 53.4% of the population. However, Hinduism stands out as it makes up 8.9%, compared to the Greater Sydney average of 5.2%.

Regarding ancestry, the top groups are Other (17.1%), Chinese (15.0%), and Australian (13.8%). Notably, Sri Lankan, Korean, and Indian ethnicities are overrepresented in Castle Hill-West at 2.0%, 2.4%, and 8.0% respectively, compared to regional averages of 0.3%, 1.1%, and 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 years and slightly older than Australia's median of 38 years. Compared to Greater Sydney, Castle Hill - West has a notably higher proportion of residents aged 55-64 (13.9% locally) and a lower proportion of residents aged 25-34 (8.7%). According to the 2021 Census, the 75 to 84 age group grew from 3.4% to 6.4%, while the 65 to 74 cohort increased from 9.3% to 11.0%. Conversely, the 5 to 14 age group declined from 14.4% to 12.2%, and the 0 to 4 age group dropped from 4.5% to 2.9%. Demographic modeling suggests that by 2041, Castle Hill - West's age profile will change significantly. The 75 to 84 cohort is projected to grow by 67%, adding 221 residents to reach 555. Residents aged 65 and older represent all of the anticipated population growth. However, population declines are projected for the 0 to 4 and 45 to 54 age cohorts.