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 around 13,076 as of May 2026. This reflects an increase of 887 people since the 2021 Census, which reported a population of 12,189 people. The change is inferred from the estimated resident population of 12,973 from the ABS in June 2025 and an additional 642 validated new addresses since the Census date. This level of population equates to a density ratio of 1,920 persons per square kilometer, which is above the average seen across national locations assessed by AreaSearch. Castle Hill - North's growth rate of 7.3% since the 2021 census exceeded both the SA3 area (5.3%) and the state, marking it as a growth leader in the region. Population growth for the area was primarily driven by overseas migration that contributed approximately 91.3% of overall population gains during recent periods.

AreaSearch is adopting 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 from these aggregations are applied to all areas for years 2032 to 2041. By 2041, Castle Hill - North is predicted to expand by 6,133 persons based on the latest annual ERP population numbers, reflecting an increase of 46.1% in total over the 16-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 has seen 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 387 approved so far in FY26. The average population growth per year for each dwelling built was 0.3 people between FY21 and FY25, indicating that new supply is meeting or exceeding demand, providing ample buyer choice and capacity for population growth beyond current forecasts.

The average expected construction cost value of new dwellings is $521,000, suggesting a focus on the premium market with high-end developments. In terms of commercial activity, $75.8 million in approvals have been registered this financial year. Compared to Greater Sydney, Castle Hill - North has around three-quarters the rate of new dwelling approvals per person and ranks among the 57th percentile nationally. The current development composition is 29.0% detached dwellings and 71.0% attached dwellings, a 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.

Castle Hill - North shows a developing market with around 277 people per dwelling approval. Looking ahead, Castle Hill - North is projected to grow by approximately 6,030 residents by 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.

Castle Hill - North has emerging levels of nearby infrastructure activity, ranking in the 31stth percentile nationally

The performance of an area is significantly influenced by changes in local infrastructure, major projects, and planning initiatives. AreaSearch has identified a total of 25 projects that are expected to impact the area. Notable projects include Hills Shire Council's Infrastructure Delivery Program for the years 2025-2026, Castle Hill RSL's Residential Lifestyle Development, Hills Showground Village by Deicorp, and Carrington Square at 21-23 Victoria Avenue, Castle Hill. 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 professional services being strongly represented. The unemployment rate in December 2025 was 4.3%. At that time, there were 6,547 residents employed while the unemployment rate was 0.1% higher than Greater Sydney's rate of 4.2%.

Workforce participation was somewhat lower at 64.2%, compared to Greater Sydney's 68.8%. According to Census responses, 52.7% of residents worked from home, though Covid-19 lockdown impacts should be considered. The dominant employment sectors among residents were health care & social assistance, professional & technical services, and retail trade.

In contrast, transport, postal & warehousing employed only 2.7% of local workers, lower than Greater Sydney's 5.3%. The predominantly residential area appears to offer limited employment opportunities locally, as indicated by the count of Census working population versus resident population. Between December 2024 and December 2025, the labour force decreased by 0.3% while employment decreased by 1.1%, leading to an unemployment rate rise of 0.8 percentage points. This contrasts with Greater Sydney where employment rose by 2.2%, the labour force grew by 2.3%, and unemployment rose marginally. Jobs and Skills Australia's national employment forecasts from May-25 offer insight into potential future demand within Castle Hill - North. These projections, covering five and ten-year periods, suggest that national employment will expand by 6.6% over five years and 13.7% over ten years. However, growth rates differ significantly between industry sectors. Applying these industry-specific 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 median taxpayer income for Castle Hill - North SA2 is $62,213, with an average of $88,003, according to the latest postcode level ATO data aggregated by AreaSearch for financial year 2023. This is among the highest in Australia, contrasting with Greater Sydney's median income of $60,817 and average income of $83,003. Based on Wage Price Index growth of 10.32% since financial year 2023, current estimates would be approximately $68,633 (median) and $97,085 (average) as of March 2026. 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 (4,184 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

In Castle Hill - North, as per the latest Census, 83.2% of dwellings were houses while 16.8% consisted of semi-detached homes, apartments, and other types. This contrasts with Sydney's metropolitan area where 55.9% were houses and 44.1% were 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, higher than Sydney's average of $2,427. Weekly rent median was $600, compared to Sydney's $470. Nationally, Castle Hill - North's mortgage repayments were significantly higher at $3,000 versus 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 constitute 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 account for the remaining 13.3%, with lone person households at 12.4% and group households comprising 1.1%. The median household size is 3.1 people, 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 is notably higher than broader benchmarks. As of 2021 data, 45.1% of residents aged 15 years and above hold university qualifications, compared to the national average of 30.4% and the NSW average of 32.2%. This high educational attainment positions the area favourably for knowledge-based opportunities. Bachelor degrees are the most common at 28.1%, followed by postgraduate qualifications (13.6%) and graduate diplomas (3.4%).

Vocational pathways account for 24.9% of qualifications among those aged 15 years and above, with advanced diplomas at 10.8% and certificates at 14.1%. Educational participation is significantly high in the area, with 31.7% of residents currently enrolled in formal education as of 2021 data. 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

Castle Hill - North has 93 active public transport stops, serving a mix of lightrail and bus services. These stops are covered by 131 individual routes, collectively facilitating 9,819 weekly passenger trips. Residents enjoy excellent transport accessibility, with an average distance of 170 meters to the nearest stop. Primarily residential, most commutes are outward-bound, with cars being the dominant mode at 85%. Train usage stands at 7%. Vehicle ownership averages 1.7 per dwelling, exceeding the regional norm.

According to the 2021 Census, a high 52.7% of residents work from home, potentially due to COVID-19 conditions. Service frequency across all routes averages 1,402 trips daily, translating 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 (8,277 people), compared to 59.9% in Greater Sydney and a national average of 55.7%.

The most prevalent medical conditions are arthritis and asthma, affecting 6.0% and 6.0% of residents respectively. 75.5% of residents declare themselves completely clear of medical ailments, compared to 74.6% in Greater Sydney. The area has 19.4% of residents aged 65 and over (2,540 people), higher than the 15.5% in Greater Sydney. Health outcomes among seniors are strong, aligning 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 5.2% regionally.

Top ancestry groups are English (17.9%), Australian (16.0%), and Chinese (15.2%), which is higher than the regional average of 8.4%. Notably, Korean (2.6%) and Sri Lankan (0.8%) groups are overrepresented compared to regional averages of 1.1% and 0.3%, respectively.

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

The median age in Castle Hill - North is 43 years, considerably higher than Greater Sydney's average of 37 and the national average of 38. The age profile shows that those aged 45-54 are particularly prominent at 15.5%, while the 25-34 group is smaller at 7.2% compared to Greater Sydney. Between 2021 and now, the 15-24 age group has grown from 13.3% to 15.3%, while the 75-84 cohort increased from 5.8% to 6.8%. Conversely, the 65-74 cohort declined from 12.1% to 10.8%, and the 55-64 group dropped from 12.9% to 11.8%. Looking ahead to 2041, demographic projections reveal that the 15-24 age cohort is projected to rise significantly, expanding by 1,119 people (56%) from 2,003 to 3,123.