Castle Hill - North

Population growth drivers in Castle Hill - North are slightly above average based on AreaSearch's ranking of recent, and medium term trends

Castle Hill - North's population is approximately 13,186 as of November 2025. This figure represents an increase of 997 people, marking an 8.2% rise since the 2021 Census, which reported a population of 12,189. The growth is inferred from the estimated resident population of 12,625 in June 2024 and an additional 602 validated new addresses since the Census date. This results in a population density ratio of 1,936 persons per square kilometer, higher than the average across national locations assessed by AreaSearch. Castle Hill - North's growth rate exceeded that of its SA3 area (6.6%) and the state, positioning it as a growth leader in the region. Overseas migration contributed approximately 88.1% of overall population gains during recent periods.

AreaSearch uses 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 are utilized, 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. By 2041, Castle Hill - North is predicted to expand by 6,842 persons based on the latest annual ERP population numbers, reflecting a total increase of 47.2% over the 17-year period.

AreaSearch analysis of residential development drivers sees Castle Hill - North recording a relatively average level of approval activity when compared to local markets analysed countrywide

Castle Hill - North saw approximately 81 new homes approved annually over the past five financial years, from FY21 to FY25. A total of 406 homes were approved during this period, with an additional 133 approved in FY26 up until now. The average population growth per dwelling built was 0.3 people per year between FY21 and FY25, indicating that new supply has kept pace with or exceeded demand, providing ample buyer choice and capacity for population growth beyond current forecasts.

The average expected construction cost value of new dwellings was $651,000, which is moderately above regional levels, suggesting an emphasis on quality construction. In the current financial year, $75.8 million in commercial approvals have been registered, reflecting high levels of local commercial activity. Compared to Greater Sydney, Castle Hill - North has around two-thirds the rate of new dwelling approvals per person and ranks among the 57th percentile of areas assessed nationally. The composition of new development consists of 29.0% detached dwellings and 71.0% attached dwellings, marking a significant shift from the current housing mix of 83.0% houses. This change reflects reduced availability of development sites and addresses shifting lifestyle demands and affordability requirements, attracting downsizers, investors, and first-time purchasers.

With around 277 people per dwelling approval, Castle Hill - North demonstrates a developing market. Looking ahead, Castle Hill - North is projected to grow by approximately 6,228 residents by the year 2041, according to the latest AreaSearch quarterly estimate. If current development rates continue, housing supply may not keep pace with population growth, potentially increasing competition among buyers and supporting stronger price growth in the area.

Castle Hill - North has strong levels of nearby infrastructure activity, ranking in the top 30% nationally

In total, twenty-four projects have been identified by AreaSearch that are expected to impact the area. Among these key initiatives are Commercial and Retail Development at 21-23 Victoria Avenue, Castle Hill; Castle Hill Showground Revitalisation; Cecil & Roger Mixed-Use Development; and Hills Shire Council Delivery Program and Operational Plan 2024-2025 Infrastructure Works. The following list details those projects 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 - North remain below the national average according to AreaSearch analysis

Castle Hill - North has a highly educated workforce with strong representation in professional services. Its unemployment rate was 4.0% as of June 2025.

Employment growth over the past year was estimated at 2.2%. In June 2025, 6,742 residents were employed, with an unemployment rate of 4.0%, 0.2% below Greater Sydney's rate of 4.2%. Workforce participation was broadly similar to Greater Sydney's 60.0%.

Dominant employment sectors among residents included health care & social assistance, professional & technical services, and retail trade. Transport, postal & warehousing employed just 2.7% of local workers, below Greater Sydney's 5.3%. Employment opportunities locally appear limited, as indicated by the count of Census working population vs resident population. During the year to June 2025, employment levels increased by 2.2%, and labour force increased by 3.1%, causing the unemployment rate to rise by 0.9 percentage points. In comparison, Greater Sydney saw employment grow by 2.6%, labour force expand by 2.9%, and unemployment rise by 0.3 percentage points. As of Nov-25, NSW employment contracted by 0.03% (losing 2,260 jobs), with the state unemployment rate at 3.9%. National unemployment was 4.3%. Jobs and Skills Australia's national employment forecasts from May-25 project national employment growth of 6.6% over five years and 13.7% over ten years. Applying these projections to Castle Hill - North's employment mix suggests local employment should increase by 7.0% over five years and 14.3% over ten years, based on a simple weighting extrapolation for illustrative purposes.

Income metrics indicate excellent economic conditions, with the area achieving higher performance than 75% of national locations assessed by AreaSearch

The Castle Hill - North SA2 had a median taxpayer income of $59,175 and an average of $87,832 according to the latest postcode level ATO data aggregated by AreaSearch for financial year 2022. This is among the highest in Australia, contrasting with Greater Sydney's median income of $56,994 and average income of $80,856. Based on Wage Price Index growth of 12.61% since financial year 2022, current estimates would be approximately $66,637 (median) and $98,908 (average) as of September 2025. Census data reveals household incomes rank exceptionally at the 94th percentile ($2,721 weekly). Distribution data shows the $4000+ earnings band captures 32.0% of the community (4,219 individuals), contrasting with the surrounding region where the $1,500 - 2,999 bracket leads at 30.9%. Economic strength emerges through 45.8% of households achieving high weekly earnings exceeding $3,000, supporting elevated consumer spending. Housing accounts for 14.4% of income while strong earnings rank residents within the 94th percentile for disposable income and the area's SEIFA income ranking places it in the 9th decile.

Castle Hill - North is characterized by a predominantly suburban housing profile, with above-average rates of outright home ownership

As per the latest Census evaluation in Castle Hill - North, 83.2% of dwellings were houses with the remaining 16.8% comprising semi-detached homes, apartments, and other types. This is compared to Sydney metropolitan areas which had 78.2% houses and 21.8% other dwellings. Home ownership in Castle Hill - North stood at 40.9%, with mortgaged properties at 39.9% and rented dwellings at 19.1%. The median monthly mortgage repayment was $3,000, aligning with Sydney's average, while the median weekly rent was $600 compared to Sydney's $580. Nationally, Castle Hill - North's mortgage repayments were significantly higher than the Australian average of $1,863 and rents were substantially above the national figure of $375.

Castle Hill - North features high concentrations of family households, with a higher-than-average median household size

Family households account for 86.7% of all households, including 49.7% couples with children, 27.4% couples without children, and 8.9% single parent families. Non-family households make up the remaining 13.3%, consisting of 12.4% lone person households and 1.1% group households. The median household size is 3.1 people, which is larger than the Greater Sydney average of 3.0.

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

Educational attainment in Castle Hill - North is notably high, with 45.1% of residents aged 15+ holding university qualifications compared to Australia's 30.4% and NSW's 32.2%. Bachelor degrees are the most common at 28.1%, followed by postgraduate qualifications at 13.6% and graduate diplomas at 3.4%. Vocational pathways account for 24.9% of qualifications, with advanced diplomas at 10.8% and certificates at 14.1%. Educational participation is high, with 31.7% of residents currently enrolled in formal education.

This includes 10.5% in secondary education, 9.7% in primary education, and 6.6% pursuing tertiary education.

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

The analysis shows that there are 83 active transport stops operating within Castle Hill - North. These include a mix of lightrail and bus services. There are 134 individual routes servicing these stops, collectively providing 6,505 weekly passenger trips.

Transport accessibility is rated as excellent, with residents typically located 170 meters from the nearest transport stop. Service frequency averages 929 trips per day across all routes, equating to approximately 78 weekly trips per individual stop.

Castle Hill - North's residents boast exceedingly positive health performance metrics with very low prevalence of common health conditions across all age groups

Health outcomes data shows excellent results for Castle Hill - North, with very low prevalence of common health conditions across all age groups. The rate of private health cover is notably high at approximately 64% of the total population (8,412 people), exceeding the national average of 55.3%.

The most prevalent medical conditions in this area are arthritis and asthma, affecting 6.0% and 6.0% of residents respectively. A significant majority, 75.5%, report being completely free from medical ailments, closely matching the Greater Sydney figure of 75.9%. As of 2021, 19.4% of residents are aged 65 and over (2,564 people). Health outcomes among seniors in Castle Hill - North align well with those of the general population.

Castle Hill - North 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-North has significant cultural diversity, with 40.5% speaking a language other than English at home and 42.9% born overseas. Christianity is the dominant religion at 55.1%. Hinduism is overrepresented at 4.8%, compared to Greater Sydney's 8.6%.

The top three ancestral groups are English (17.9%), Australian (16.0%), and Chinese (15.2%). Korean (2.6%) and Lebanese (2.3%) are notably overrepresented, while Sri Lankan is slightly underrepresented at 0.8%.

Castle Hill - North's median age exceeds the national pattern

The median age in Castle Hill-North is 43 years, which is higher than Greater Sydney's average of 37 and the national average of 38 years. The age profile shows that those aged 65-74 are particularly prominent at 11.2%, while the 25-34 age group is smaller at 7.3%. Between 2021 and present, the 15 to 24 age group has increased from 13.3% to 14.8% of the population. Conversely, the 55 to 64 age cohort has decreased from 12.9% to 11.5%. By 2041, demographic projections indicate significant shifts in Castle Hill-North's age structure. The 15 to 24 age group is projected to rise substantially, with an increase of 1,161 people (60%) from 1,951 to 3,113.