Castle Hill - North
Statistical Area - sa2

Population growth drivers in Castle Hill - North are strong compared to national averages based on AreaSearch's ranking of recent, and medium to long-term trends

Castle Hill - North's population is 13,148 as of Aug 2025. This figure represents an increase of 959 people since the 2021 Census, which recorded a population of 12,189. The growth is inferred from ABS estimated resident population of 12,625 in June 2024 and validated new addresses since the Census date. This results in a population density of 1,930 persons per square kilometer, higher than the average across national locations assessed by AreaSearch. Castle Hill - North's growth rate of 7.9% since the 2021 census is higher than both its SA3 area (5.6%) and state averages, indicating 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 from 2022 using a base year of 2021 are applied. Growth rates by age group from these aggregations are used for all areas from years 2032 to 2041. Future demographic trends predict exceptional growth for Castle Hill - North, with an expected expansion of 6,842 persons by 2041 based on the latest population numbers, reflecting a total increase of 47.7% 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 approximately 210 new homes approved annually. Development approval data is sourced from the Australian Bureau of Statistics on a financial year basis, with 1,052 homes approved over the past five financial years, from FY-20 to FY-25, and 127 approved so far in FY-26. On average, only 0.3 people have moved to the area per dwelling built each year over these five years. This suggests that new construction is meeting or exceeding demand, providing more options for buyers and potentially driving population growth beyond current expectations.

The average expected construction cost value of new properties is $651,000, slightly above the regional average, indicating a focus on quality developments. In FY-26, $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 nationally when assessed against other areas. New development consists of 29.0% detached dwellings and 71.0% attached dwellings, representing a shift from the current housing mix, which is predominantly houses (83.0%). This shift towards compact living offers affordable entry pathways and attracts downsizers, investors, and first-time purchasers.

With around 277 people moving to the area per dwelling approval, Castle Hill - North demonstrates a developing market. Looking ahead, Castle Hill - North is projected to grow by 6,266 residents by 2041. If current development rates continue, new housing supply should comfortably meet demand, creating favourable conditions for buyers and potentially supporting growth beyond current population projections.

Castle Hill - North has moderate levels of nearby infrastructure activity, ranking in the top 50% nationally

Changes to local infrastructure significantly impact an area's performance. AreaSearch identified 24 projects likely influencing the region. Notable initiatives include Hills Showground Village by Deicorp, Chapman Gardens by CG Group, Hills Shire Council Infrastructure Program from 2024 to 2025, and Castle Hill Showground Revitalisation. The following list details projects of particular relevance.

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

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

Castle Hill - North has an educated workforce with strong professional services representation. Its unemployment rate was 4.0% in the past year, with estimated employment growth of 2.2%.

As of June 2025, 6,742 residents are employed at a 0.2% lower unemployment rate than Greater Sydney's 4.2%, with similar workforce participation rates of 60.0%. Dominant sectors include health care & social assistance (30.1%), professional & technical services (28.9%), and retail trade (17.3%). Transport, postal & warehousing employs only 2.7% locally, below Greater Sydney's 5.3%.

Between June 2024 and June 2025, employment levels increased by 2.2%, labour force grew by 3.1%, causing unemployment to rise by 0.9 percentage points. In comparison, Greater Sydney saw employment grow by 2.6% and unemployment rise by 0.3%. State-level data from Sep-25 shows NSW employment contracted by 0.41%, with an unemployment rate of 4.3%, favouring the national rate of 4.5%. National forecasts project employment growth of 6.6% over five years and 13.7% over ten years, but local projections suggest Castle Hill - North's growth could be approximately 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

Castle Hill - North had a median taxpayer income of $59,175 and an average of $87,832 in financial year 2022, according to postcode level ATO data aggregated by AreaSearch. This is among the highest incomes in Australia, compared to Greater Sydney's median income of $56,994 and average income of $80,856. Based on Wage Price Index growth of 10.6% since financial year 2022, estimated incomes as of March 2025 would be approximately $65,448 (median) and $97,142 (average). Census data shows household incomes rank at the 94th percentile with $2,721 weekly earnings. The income distribution indicates that 32.0% of individuals earn more than $4,000 annually. This contrasts with the surrounding region where the leading income bracket is $1,500 - 2,999 at 30.9%. Economic strength is evident with 45.8% of households earning over $3,000 weekly, supporting high consumer spending. Housing expenses account for 14.4% of income, and residents rank in 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

In Castle Hill - North, as assessed in the most recent Census, 83.2% of dwellings were houses, with 16.8% being other types such as semi-detached homes and apartments. This contrasts with Sydney's metropolitan area which had 78.2% houses and 21.8% other dwellings. Home ownership in Castle Hill - North was higher at 40.9%, compared to the remainder of dwellings that were either mortgaged (39.9%) or rented (19.1%). The median monthly mortgage repayment in the area was $3,000, closely matching Sydney's metropolitan average. However, the median weekly rent figure stood at $600, slightly higher than Sydney's metro average of $580. Nationally, Castle Hill - North's median monthly mortgage repayments were significantly higher than Australia's 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, consisting of couples with children (49.7%), couples without children (27.4%), and single parent families (8.9%). 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, 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 higher than national and state averages. As of a recent report, 45.1% of residents aged 15 and above hold university qualifications, compared to 30.4% nationally and 32.2% in NSW. 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, 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. The area's three schools have a combined enrollment of 3,599 students. Castle Hill - North has significant socio-educational advantages and academic achievement, with an ICSEA score of 1127. Education provision is balanced with two primary and one secondary school serving distinct age groups. As an education hub, the area offers 27.4 school places per 100 residents, higher than the regional average of 17.6, attracting students from surrounding communities.

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

Castle Hill - North has 83 active public transport stops. These include lightrail and bus services. There are 134 individual routes operating from these stops, serving a total of 6,505 weekly passenger trips.

Residents enjoy excellent transport accessibility, with an average distance of 170 meters to the nearest stop. Service frequency across all routes is 929 trips per day, translating 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 exceptionally high at approximately 64% of the total population (8388 people), compared to the national average of 55.3%.

The most common medical conditions in the area are arthritis and asthma, affecting 6.0% and 6.0% of residents respectively. A majority, 75.5%, report being completely clear of medical ailments, slightly lower than the Greater Sydney average of 75.9%. As of 2021, 19.4% of residents are aged 65 and over (2557 people). Health outcomes among seniors align closely with those of the general population in the area.

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 ranks high in cultural diversity, with 40.5% of its residents speaking a language other than English at home and 42.9% born overseas. Christianity is the predominant religion, comprising 55.1%. Hinduism is overrepresented compared to Greater Sydney, making up 4.8% versus 8.6%.

The top three ancestry groups are English (17.9%), Australian (16.0%), and Chinese (15.2%). Notable differences exist for Korean (2.6%, vs regional 2.3%), Lebanese (2.3%, vs 1.6%), and Sri Lankan (0.8%, vs 1.0%) groups.

Castle Hill - North hosts an older demographic, ranking in the top quartile nationwide

The median age in Castle Hill - North is 43 years, which is higher than Greater Sydney's average of 37 and exceeds the national average of 38 years. The age profile shows that those aged 65-74 are particularly prominent at 11.2%, while those aged 25-34 make up a smaller proportion at 7.3% compared to Greater Sydney. Between 2021 and present, the population of 15 to 24-year-olds has grown from 13.3% to 14.8%. Conversely, the age group of 55-64 has declined from 12.9% to 11.5%. By 2041, demographic projections indicate significant shifts in Castle Hill - North's age structure, with the 15 to 24 age cohort projected to rise substantially by 1,167 people (60%), increasing from 1,945 to 3,113.