Castle Hill - East

Castle Hill - East is positioned among the lower quartile of areas assessed nationally for population growth based on AreaSearch's assessment of recent, and medium term trends

Castle Hill - East's population was approximately 5,384 as of February 2026. This figure represents a decrease of 286 people (5.0%) since the 2021 Census, which recorded a population of 5,670. The change is inferred from ABS' estimated resident population of 5,384 in June 2024 and address validation since the Census date. This results in a population density ratio of 2,601 persons per square kilometer, placing Castle Hill - East in the upper quartile relative to national locations assessed by AreaSearch. Overseas migration was the primary driver of population growth in the area 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. Future population dynamics anticipate an increase just below the median of national statistical areas, with Castle Hill - East expected to expand by 510 persons to 2041 based on the latest annual ERP population numbers, reflecting a gain of 9.5% in total over the 17 years.

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

Castle Hill - East has had approximately three residential properties approved annually. Between financial years 2021 and 2025, sixteen homes were granted approval, with none so far in the current financial year of 2026.

The population has been declining recently, yet housing supply has remained adequate relative to demand, resulting in a balanced market with good buyer choice. New properties are constructed at an average cost of $168,000, which is below regional norms, offering more affordable housing options for purchasers. Compared to Greater Sydney, Castle Hill - East has significantly less development activity, being 94.0% below the regional average per person. This scarcity typically strengthens demand and prices for existing properties. The area's development is also below national averages, suggesting maturity and possible planning constraints.

All recent development has consisted of detached dwellings, maintaining the area's traditional suburban character with a focus on family homes that appeal to those seeking space. New construction favours detached housing more than current patterns suggest, indicating ongoing robust demand for family homes. Castle Hill - East has a population density of approximately 4040 people per approval, reflecting its mature and established nature. Population forecasts indicate the area will gain 510 residents by 2041. At current development rates, housing supply may struggle to match population growth, potentially increasing buyer competition and supporting price increases.

Castle Hill - East has emerging levels of nearby infrastructure activity, ranking in the 36thth percentile nationally

Four projects identified by AreaSearch are expected to impact the area: Hills Shire Council's Delivery Program and Operational Plan 2024-2025 Infrastructure Works, New Line Road Upgrade, Sydney Metro Northwest, and Cherrybrook Precinct Rezoning Proposal.

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AreaSearch analysis places Castle Hill - East well above average for employment performance across multiple indicators

Castle Hill - East has a highly educated workforce with strong representation in the technology sector. As of September 2025, its unemployment rate is 2.1%, lower than Greater Sydney's 4.2%. Workforce participation stands at 53.1% compared to Greater Sydney's 70.0%.

A significant proportion, 58.2%, of residents work from home. Key industries include professional & technical (1.3 times the regional average), health care & social assistance, and education & training. Transport, postal & warehousing has limited presence at 2.7% compared to the regional average of 5.3%. Over the year ending September 2025, labour force levels increased by 0.4%, while employment remained stable, leading to a rise in unemployment by 0.5 percentage points.

In contrast, Greater Sydney saw employment growth of 2.1% and labour force growth of 2.4%. National employment forecasts from May-25 project a 6.6% increase over five years and 13.7% over ten years. Applying these projections to Castle Hill - East's employment mix suggests local employment should grow by 7.2% over five years and 14.5% over ten years, though this is a simple extrapolation for illustrative purposes only.

The area exhibits notably strong income performance, ranking higher than 70% of areas assessed nationally through AreaSearch analysis

AreaSearch's latest postcode level ATO data for financial year ending June 30, 2023 shows Castle Hill - East SA2 has high incomes nationally. The median income is $62,192 and the average is $87,558. In Greater Sydney, median income is $60,817 and average is $83,003. Based on Wage Price Index growth of 8.86% from July 2023 to September 2025, estimated incomes are approximately $67,702 (median) and $95,316 (average). Census 2021 data shows household income ranks at the 66th percentile ($2,014 weekly), personal income at the 31st percentile. Income analysis reveals 27.3% of individuals earn over $4,000 annually, differing from surrounding regions where $1,500 - $2,999 is dominant at 30.9%. High earning households (exceeding $3,000 weekly) comprise 38.0%, supporting high consumer spending. Housing costs consume 19.0% of income, but strong earnings place disposable income at the 62nd percentile. The area's SEIFA income ranking places it in the 8th decile.

Castle Hill - East displays a diverse mix of dwelling types, with above-average rates of outright home ownership

The latest Census showed that in Castle Hill - East, 68.1% of dwellings were houses, with the remaining 31.9% being semi-detached, apartments, or other types. This contrasts with Sydney metro's figures of 55.9% houses and 44.1% other dwellings. Home ownership in Castle Hill - East stood at 40.9%, with mortgaged dwellings at 40.5% and rented ones at 18.6%. The median monthly mortgage repayment was $3,000, higher than Sydney metro's average of $2,427. The median weekly rent in the area was $547, compared to Sydney metro's $470. Nationally, Castle Hill - East's mortgage repayments were significantly higher at $3,000 versus Australia's average of $1,863, and rents were substantially higher at $547 compared to the national figure of $375.

Castle Hill - East has a typical household mix, with a fairly typical median household size

Family households account for 70.7% of all households, including 42.9% couples with children, 22.1% couples without children, and 5.4% single parent families. Non-family households constitute the remaining 29.3%, with lone person households at 28.7% and group households comprising 0.7% of the total. The median household size is 2.7 people, which aligns with the Greater Sydney average.

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

Educational attainment in Castle Hill - East shows a significant advantage over broader benchmarks. As of the latest data, 48.6% of residents aged 15 and above hold university qualifications, compared to 30.4% nationally and 32.2% in New South Wales (NSW). This high level of educational attainment is led by bachelor degrees at 30.3%, followed by postgraduate qualifications at 15.3% and graduate diplomas at 3.0%. Vocational pathways account for 22.9% of qualifications among those aged 15 and above, with advanced diplomas making up 11.6% and certificates 11.3%.

Educational participation in the area is notably high, with 31.1% of residents currently enrolled in formal education. This includes 10.7% in secondary education, 9.6% in primary education, and 6.9% pursuing tertiary education.

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

Castle Hill - East has 57 active public transport stops, served by 100 routes offering 4,465 weekly passenger trips. The average distance to the nearest stop is 177 meters. Most residents commute outward, with cars being the primary mode at 83%, and trains at 9%. Vehicle ownership averages 1.4 per dwelling. In 2021 Census data, 58.2% of residents worked from home. Service frequency averages 637 trips daily across all routes, equating to approximately 78 weekly trips per stop.

Service frequency averages 637 trips per day across all routes, equating to approximately 78 weekly trips per individual stop.

Castle Hill - East's residents are relatively healthy in comparison to broader Australia with the level of common health conditions among the general population somewhat typical, though higher than the nation's average among older cohorts

Castle Hill's health metrics are close to national benchmarks, with AreaSearch assessing mortality rates and chronic condition prevalence as somewhat typical of the general population, but higher than the national average among older cohorts. Approximately 63% of Castle Hill's total population (3408 people) has private health cover, compared to Greater Sydney's 59.9%, and the national average of 55.7%. The most common medical conditions in Castle Hill are arthritis and heart disease, affecting 9.8% and 6.0% of residents respectively, while 66.4% declare themselves completely clear of medical ailments, compared to Greater Sydney's 74.6%.

Castle Hill has 36.1% of residents aged 65 and over (1943 people), higher than Greater Sydney's 15.4%. Health outcomes among seniors present some challenges, ranking lower nationally than the broader population.

Castle Hill - East 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-East has a high level of cultural diversity, with 41.9% of its population speaking a language other than English at home and 45.9% born overseas. Christianity is the predominant religion in Castle Hill-East, accounting for 54.9% of people there. Hinduism, however, is more prevalent in Castle Hill-East compared to Greater Sydney, comprising 8.0% versus 5.2%.

The top three ancestry groups are English (20.5%), Chinese (19.2%, substantially higher than the regional average of 8.4%), and Australian (16.8%). Other notable ethnic groups include Korean (1.8% vs regional 1.1%), Sri Lankan (1.0% vs 0.3%), and Indian (6.9% vs 3.6%).

Castle Hill - East ranks among the oldest 10% of areas nationwide

Castle Hill - East's median age is 53 years, significantly higher than Greater Sydney's average of 37 years and the national average of 38 years. The age profile shows that those aged 85+ are particularly prominent at 12.8%, while the 25-34 group is comparatively smaller at 5.0% compared to Greater Sydney. This concentration of those aged 85+ is well above the national average of 2.2%. Between 2021 and present, the 15 to 24 age group has grown from 10.5% to 13.8%, while the 65 to 74 cohort increased from 9.1% to 10.6%. Conversely, the 85+ cohort declined from 14.8% to 12.8% and the 5 to 14 group dropped from 11.5% to 10.2%. By 2041, Castle Hill - East is expected to see notable shifts in its age composition. The 85+ group is projected to grow by 65%, reaching 1,133 people from 687. Those aged 65+ will comprise 98% of the projected population growth. Conversely, population declines are projected for those aged 0 to 4 and 5 to 14 years.