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 12,993 as of February 2026. This figure indicates a growth of 804 people, representing a 6.6% increase since the 2021 Census, which reported a population of 12,189. The change is inferred from the estimated resident population of 12,572 in June 2024 and an additional 602 validated new addresses since the Census date. This results in a population density ratio of 1,907 persons per square kilometer, which is higher than the average across national locations assessed by AreaSearch. Castle Hill - North's growth rate of 6.6% since the 2021 census exceeds that of the SA3 area (6.4%), positioning it as a growth leader in the region. Overseas migration contributed approximately 88.1% of overall population gains during recent periods, driving primary population growth for the area.

AreaSearch adopts ABS/Geoscience Australia projections for each SA2 area, released in 2024 with 2022 as the base year. For areas not covered by this data, AreaSearch utilises NSW State Government's SA2 level projections, released in 2022 with 2021 as the base year. Growth rates by age group are applied to all areas for years 2032 to 2041. By 2041, Castle Hill - North is predicted to experience exceptional growth, placing it in the top 10 percent of statistical areas analysed by AreaSearch, with an expected expansion of 6,842 persons, reflecting a total increase of 49.4% over the 17-year period based on the latest annual ERP population numbers.

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 has seen approximately 81 new homes approved annually over the past five financial years, with a total of 406 homes approved between FY21 and FY25, and an additional 379 approved in FY26. On average, about 0.3 people have moved to the area per dwelling built each year during this period. This indicates that new supply is meeting or exceeding demand, providing ample buyer options and allowing for population growth beyond current projections.

The average expected construction cost value of new dwellings stands at $521,000, suggesting developers are targeting the premium market with high-end developments. In FY26 alone, $75.8 million worth of commercial approvals have been registered, demonstrating robust 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 nationally in terms of assessed areas. New development in Castle Hill - North consists of approximately 29% detached dwellings and 71% attached dwellings, marking a significant shift from the current housing mix of 83% houses. This change reflects reduced availability of development sites and addresses evolving lifestyle demands and affordability requirements, attracting downsizers, investors, and first-time purchasers.

With around 277 people per dwelling approval, Castle Hill - North exhibits characteristics of a low-density area. According to the latest AreaSearch quarterly estimate, the region is projected to grow by approximately 6,421 residents by 2041. If current development rates persist, housing supply may not keep pace with population growth, potentially increasing buyer competition and supporting stronger price growth.

Castle Hill - North has emerging levels of nearby infrastructure activity, ranking in the 32ndth percentile nationally

The area's performance is significantly influenced by changes in local infrastructure. AreaSearch has identified a total of 24 projects likely to impact the area. Notable projects include Hills Shire Council Delivery Program and Operational Plan 2024-2025 Infrastructure Works, Commercial and Retail Development at 21-23 Victoria Avenue, Castle Hill, Castle Hill Showground Revitalisation, and Cecil & Roger Mixed-Use Development. The following list details those 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. The unemployment rate was 3.9% as of September 2025. This is 0.3% lower than Greater Sydney's rate of 4.2%.

Workforce participation was somewhat below standard at 66.9%, compared to Greater Sydney's 70.0%. A high proportion, 52.7%, of residents worked from home based on Census responses. Dominant employment sectors include health care & social assistance, professional & technical services, and retail trade.

Transport, postal & warehousing employed only 2.7% of local workers, below Greater Sydney's 5.3%. The area appears to offer limited local employment opportunities. From September 2024 to September 2025, employment levels increased by 0.2%, and labour force increased by 0.6%, causing the unemployment rate to rise by 0.4 percentage points. In contrast, Greater Sydney saw employment grow by 2.1% and unemployment rise by 0.2 percentage points. Jobs and Skills Australia's national employment forecasts from May-25 suggest potential future demand within Castle Hill - North. National employment is forecast to expand by 6.6% over five years and 13.7% over ten years, with varying growth rates between industry sectors. 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.

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 $62,213 and an average income of $88,003 in the latest postcode level ATO data aggregated by AreaSearch for the financial year 2023. This is among the highest in Australia, compared to Greater Sydney's median income of $60,817 and average income of $83,003. Based on Wage Price Index growth of 8.86% since financial year 2023, current estimates would be approximately $67,725 (median) and $95,800 (average) as of September 2025. Census data shows household incomes rank at the 94th percentile ($2,721 weekly). Distribution data indicates that 32.0% of the community earns more than $4,000 (4,157 individuals), contrasting with the surrounding region where the $1,500 - 2,999 bracket leads at 30.9%. Economic strength is evident through 45.8% of households achieving high weekly earnings exceeding $3,000, supporting elevated consumer spending. Housing accounts for 14.4% of income. Strong earnings place residents within the 94th percentile for disposable income. 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

The dwelling structure in Castle Hill - North, as per the latest Census, consisted of 83.2% houses and 16.8% other dwellings (semi-detached, apartments, 'other' dwellings), contrasting with Sydney metro's 55.9% houses and 44.1% other dwellings. Home ownership in Castle Hill - North stood at 40.9%, with mortgaged dwellings at 39.9% and rented ones at 19.1%. The median monthly mortgage repayment was $3,000, exceeding Sydney metro's average of $2,427. Weekly rent in the area was recorded at $600, compared to Sydney metro's $470. Nationally, Castle Hill - North's mortgage repayments were significantly higher than the Australian average of $1,863, with rents 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%, with lone person households at 12.4% and group households comprising 1.1% of the total. The median household size is 3.1 people, which is larger than the Greater Sydney average of 2.7.

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 significantly surpasses broader benchmarks. As of 2016, 45.1% of residents aged 15+ held university qualifications compared to Australia's 30.4% and NSW's 32.2%. Bachelor degrees were the most common at 28.1%, followed by postgraduate qualifications (13.6%) and graduate diplomas (3.4%). Vocational pathways accounted for 24.9% of qualifications among those aged 15+, with advanced diplomas at 10.8% and certificates at 14.1%.

Educational participation was notably high, with 31.7% of residents currently enrolled in formal education as of 2016. This included 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

Castle Hill - North has 93 active public transport stops offering lightrail and bus services. These stops are served by 131 routes, facilitating 9,819 weekly passenger trips. The area's transport accessibility is rated excellent, with residents typically living 170 meters from the nearest stop. Most residents commute outward daily. Car remains the primary mode of transport at 85%, while train usage stands at 7%. Vehicle ownership averages 1.7 per dwelling, exceeding the regional average.

According to the 2021 Census, 52.7% of residents work from home, which may be influenced by COVID-19 conditions. On average, service frequency across all routes is 1,402 trips per day, equating to approximately 105 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

Castle Hill - North shows excellent health outcomes according to AreaSearch's assessment. Mortality rates and chronic condition prevalence are very low across all age groups. Private health cover is exceptionally high at approximately 63% of the total population (8,224 people), compared to 59.9% in Greater Sydney and 55.7% nationally.

The most common conditions are arthritis and asthma, affecting 6.0% and 6.0% of residents respectively. 75.5% of residents report being completely clear of medical ailments, slightly higher than the 74.6% across Greater Sydney. The area has a higher proportion of seniors aged 65 and over at 19.4% (2,521 people), compared to 15.4% in Greater Sydney. Health outcomes among seniors are strong and align with national rankings for 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 high cultural diversity, with 40.5% speaking a language other than English at home and 42.9% born overseas. Christianity is the main religion, comprising 55.1%. Hinduism is overrepresented at 4.8%, compared to Greater Sydney's 5.2%.

Top ancestry groups are English (17.9%), Australian (16.0%), and Chinese (15.2%), which is higher than the regional average of 8.4%. Korean, Lebanese, and Sri Lankan ethnicities show notable divergences in representation compared to regional averages.

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

The median age in Castle Hill-North is 43 years, significantly higher than Greater Sydney's average of 37 and the national average of 38. The age profile shows that those aged 45-54 are most prominent at 15.5%, while those aged 25-34 make up only 7.2% compared to Greater Sydney. Between 2021 and now, the proportion of people aged 15-24 has increased from 13.3% to 15.0%. Conversely, the proportion of those aged 55-64 has decreased from 12.9% to 11.6%, and the proportion of those aged 65-74 has dropped from 12.1% to 10.9%. By 2041, demographic projections indicate that Castle Hill-North's age structure will shift significantly, with the number of people aged 15-24 projected to rise substantially by 1,158 people (59%), from 1,954 to 3,113.