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

Based on AreaSearch's analysis, Castle Hill - North's population is around 12,993 as of Feb 2026. This reflects an increase of 804 people (6.6%) since the 2021 Census, which reported a population of 12,189 people. The change is inferred from the estimated resident population of 12,572 from the ABS as of June 2024 and an additional 602 validated new addresses since the Census date. This population level equates to a density ratio of 1,907 persons per square kilometer, which is above the average seen across national locations assessed by AreaSearch. Castle Hill - North's 6.6% growth since the 2021 census exceeded the SA3 area (6.4%), marking it as a growth leader in the region. Population growth for the area was primarily driven by overseas migration, which contributed approximately 88.1% of overall population gains during recent periods.

AreaSearch is adopting ABS/Geoscience Australia projections for each SA2 area, as released in 2024 with 2022 as the base year. For any SA2 areas not covered by this data, AreaSearch is utilising the NSW State Government's SA2 level projections, as released in 2022 with 2021 as the base year. Growth rates by age group from these aggregations are also applied to all areas for years 2032 to 2041. Regarding demographic trends, exceptional growth, placing in the top 10 percent of statistical areas analysed by AreaSearch, is predicted over the period, with the area expected to expand by 6,842 persons by 2041 based on the latest annual ERP population numbers, reflecting an increase of 49.4% in total over the 17 years.

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 around 81 new homes approved per year, with 406 homes approved over the past 5 financial years (between FY-21 and FY-25) and 379 so far in FY-26. With an average of only 0.3 people per year moving to the area for each dwelling built over the past 5 financial years (between FY-21 and FY-25), new supply is keeping pace with or exceeding demand, offering ample buyer choice and creating capacity for population growth beyond current forecasts, while new dwellings are developed at an average construction cost of $521,000, showing that developers are focusing on the premium market with high-end developments. Additionally, $75.8 million in commercial approvals have been registered this financial year, demonstrating 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 in the 57th percentile of areas assessed nationally. New development consists of 29.0% detached dwellings and 71.0% attached dwellings. This skew toward compact living offers affordable entry pathways and attracts downsizers, investors, and first-time purchasers. This represents a considerable change from the current housing mix (currently 83.0% houses), reflecting reduced availability of development sites and addressing shifting lifestyle demands and affordability requirements. With around 277 people per dwelling approval, Castle Hill - North shows characteristics of a low density area.

Looking ahead, Castle Hill - North is expected to grow by 6,421 residents through to 2041 (based on 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 32ndth percentile nationally

Nothing can influence an area's performance as much as changes to local infrastructure, major projects, and planning initiatives. In total, 24 projects have been identified by AreaSearch that are likely to have an impact on the area. Key projects include the 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, with the list below detailing those likely to be of most relevance.

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

Denotes AI-based impression for illustrative purposes only, not to be taken as definitive under any circumstances. Please follow links and conduct other investigations from the project's source for actual imagery. Developers and project owners wishing us to use original imagery please Contact Us and we will do so.

Employment conditions in Castle Hill - North remain below the national average according to AreaSearch analysis

Castle Hill - North features a highly educated workforce, with professional services showing strong representation and an unemployment rate of 4.3%. As of December 2025, 6,547 residents are in work, while the unemployment rate is 0.1% above Greater Sydney's rate of 4.2%, and workforce participation is somewhat below standard (66.7% compared to Greater Sydney's 70.2%). Based on Census responses, a high 52.7% of residents were found to work from home, though Covid-19 lockdown impacts should be considered.

The dominant employment sectors among residents include health care & social assistance, professional & technical, and retail trade. In contrast, transport, postal & warehousing employs just 2.7% of local workers, which is below Greater Sydney's 5.3%. The predominantly residential area appears to offer limited employment opportunities locally, as indicated by the count of the Census working population versus the resident population.

Based on AreaSearch analysis of SALM and ABS data, during the year to December 2025, the labour force decreased by 0.3% combined with employment decreasing by 1.1%, resulting in the unemployment rate rising by 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 can offer further insight into potential future demand within Castle Hill - North. These projections, covering five and ten-year periods, have been mapped against the local employment profile to estimate growth patterns. While national employment is forecast to expand by 6.6% over five years and 13.7% over ten years, 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 (please note this is a simple weighting extrapolation for illustrative purposes and does not take into account localised population projections).

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 shows a median taxpayer income of $62,213 and an average of $88,003 according to the latest postcode level ATO data aggregated by AreaSearch for FY-23. 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 8.86% since FY-23, current estimates would be approximately $67,725 (median) and $95,800 (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 (4,157 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

Dwelling structure within Castle Hill - North, as evaluated at the latest Census, comprised 83.2% houses and 16.8% other dwellings (semi-detached, apartments, 'other' dwellings), in comparison to Sydney metro's 55.9% houses and 44.1% other dwellings. Meanwhile, the level of home ownership within Castle Hill - North was well beyond that of Sydney metro, at 40.9%, with the remainder of dwellings either mortgaged (39.9%) or rented (19.1%). The median monthly mortgage repayment in the area was well above the Sydney metro average at $3,000, while the median weekly rent figure was recorded at $600, compared to Sydney metro's $2,427 and $470. Nationally, Castle Hill - North'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 - North features high concentrations of family households, with a higher-than-average median household size

Family households dominate at 86.7% of all households, comprising 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 of 3.1 people 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, with 45.1% of residents aged 15+ holding university qualifications compared to 30.4% in Australia and 32.2% in NSW. This substantial educational advantage positions the area strongly for knowledge-based opportunities. Bachelor degrees lead 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+; advanced diplomas (10.8%) and certificates (14.1%).

Educational participation is notably 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

Public transport analysis reveals 93 active transport stops operating within Castle Hill - North, comprising a mix of light rail and buses. These stops are serviced by 131 individual routes, collectively providing 9,819 weekly passenger trips. Transport accessibility is rated as excellent, with residents typically located 170 meters from the nearest transport stop. As a primarily residential area, most residents commute outward; the car remains the dominant mode at 85%, with 7% by train. Vehicle ownership averages 1.7 per dwelling, which is above the regional average. A high 52.7% of residents work from home (2021 Census; may reflect COVID-19 conditions).

Service frequency averages 1,402 trips per day across all routes, 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

Health outcomes data demonstrates outstanding results across Castle Hill - North, based on AreaSearch's assessment of mortality rates and chronic condition prevalence. There is a very low prevalence of common health conditions across all age groups, and the rate of private health cover is exceptionally high at approximately 63% of the total population (8,224 people). This compares to 59.9% across Greater Sydney and a national average of 55.7%.

The most common medical conditions in the area are arthritis and asthma, impacting 6.0% and 6.0% of residents, respectively, while 75.5% declared themselves as completely clear of medical ailments compared to 74.6% across Greater Sydney. The area has 19.4% of residents aged 65 and over (2,521 people), which is higher than the 15.4% in Greater Sydney. Health outcomes among seniors are particularly strong, with national rankings broadly in line with 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 scores highly on cultural diversity, with 40.5% of its population speaking a language other than English at home and 42.9% born overseas. The main religion in Castle Hill - North is Christianity, which makes up 55.1% of the population. However, the most apparent overrepresentation is in Hinduism, which comprises 4.8% of the population, compared to 5.2% across Greater Sydney.

In terms of ancestry (country of birth of parents), the top three represented groups in Castle Hill - North are English, comprising 17.9% of the population, Australian, comprising 16.0% of the population, and Chinese, comprising 15.2% of the population, which is substantially higher than the regional average of 8.4%. Additionally, there are notable divergences in the representation of certain other ethnic groups: Korean is notably overrepresented at 2.6% of Castle Hill - North (vs 1.1% regionally), Lebanese at 2.3% (vs 2.6%) and Sri Lankan at 0.8% (vs 0.3%).

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

The 43-year median age in Castle Hill - North is considerably higher than Greater Sydney's average of 37 as well as substantially exceeding the 38-year national average. The age profile shows 45 - 54 year-olds are particularly prominent (15.5%), while the 25 - 34 group is comparatively smaller (7.2%) than in Greater Sydney. In the period since 2021, the 15 to 24 age group has grown from 13.3% to 15.0% of the population. Conversely, the 55 to 64 cohort has declined from 12.9% to 11.6% and the 65 to 74 group dropped from 12.1% to 10.9%. Looking ahead to 2041, demographic projections reveal significant shifts in Castle Hill - North's age structure. The 15 to 24 age cohort is projected to rise substantially, expanding by 1,158 people (59%) from 1,954 to 3,113.