Castle Hill - Central

Castle Hill - Central has seen population growth performance typically on par with national averages when looking at short and medium term trends

Castle Hill - Central's population, as per AreaSearch's analysis, stood at 10,661 by November 2025. This figure represents a growth of 2,984 individuals, marking an increase of 38.9% since the 2021 Census which reported a population of 7,677. The change is inferred from ABS's estimated resident population of 8,547 in June 2024 and an additional 1,278 validated new addresses post-Census date. This results in a density ratio of 2,568 persons per square kilometer, placing Castle Hill - Central in the upper quartile nationally according to AreaSearch's assessments. The area's growth rate since the 2021 Census surpassed both its SA3 region (6.6%) and state levels, positioning it as a growth leader. Overseas migration accounted for approximately 80.8% of overall population gains during recent periods.

AreaSearch employs 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, released in 2022 using a base year of 2021, are utilized. Growth rates by age group from these aggregations are applied to all areas for the years 2032 to 2041. Looking ahead, demographic trends suggest exceptional growth, with Castle Hill - Central projected to be in the top 10 percent of Australian statistical areas. By 2041, based on the latest annual ERP population numbers, the area is expected to expand by 8,605 persons, reflecting an overall increase of 58.8% over the seventeen-year period.

AreaSearch assessment of residential development activity positions Castle Hill - Central among the top 25% of areas assessed nationwide

Castle Hill - Central has recorded approximately 685 residential properties granted approval each year over the past five financial years, totalling 3,428 homes. As of FY-26301 approvals have been recorded. On average, around 0.1 people per year moved to the area for each dwelling built between FY-21 and FY-25. This suggests that new construction is meeting or exceeding demand, providing more options for buyers and potentially enabling population growth beyond current projections.

The average expected construction cost value of new properties is $390,000. In FY-26, $55.8 million in commercial approvals have been registered, indicating robust local business investment. Compared to Greater Sydney, Castle Hill - Central records 837.0% more development activity per person, significantly above the national average and reflecting strong developer interest in the area. New building activity consists of 2.0% standalone homes and 98.0% medium and high-density housing. This shift from the existing housing makeup (currently 60.0% houses) suggests decreasing availability of developable sites and reflects changing lifestyles, with a focus on more diverse and affordable housing options. With around 123 people per dwelling approval, Castle Hill - Central exhibits characteristics of a growth area. According to AreaSearch's latest quarterly estimate, the area is projected to add 6,267 residents by 2041.

With current construction levels, housing supply should adequately meet demand, creating favourable conditions for buyers while potentially enabling population growth that exceeds current forecasts.

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

Changes to local infrastructure significantly influence an area's performance. AreaSearch identified 26 projects likely impacting the area. Notable projects are Castle Towers Expansion, Hills Showground East Precinct, Castle Hill Panorama, and Castle Grange. The following details those most relevant.

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

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The employment landscape in Castle Hill - Central shows performance that lags behind national averages across key labour market indicators

Castle Hill - Central has a highly educated workforce with strong representation in professional services. The unemployment rate was 4.2% as of September 2025, with an estimated employment growth of 0.9% over the past year.

There were 4,466 residents employed at this time, matching Greater Sydney's unemployment rate of 4.2%. Workforce participation was 63.8%, slightly higher than Greater Sydney's 60.0%. Key industries for employment among residents include health care & social assistance, professional & technical services, and education & training.

However, transport, postal & warehousing had lower representation at 3.3% compared to the regional average of 5.3%. The area functions as an employment hub with 1.2 workers per resident, attracting workers from surrounding areas. Between September 2024 and September 2025, employment levels increased by 0.9%, labour force grew by 2.0%, causing the unemployment rate to rise by 1.1 percentage points. In contrast, Greater Sydney saw employment rise by 2.1% and unemployment increase by only 0.2 percentage points during this period. State-level data from 25-Nov-25 shows NSW employment contracted by 0.03%, with an unemployment rate of 3.9%. Nationally, the unemployment rate was 4.3%. Jobs and Skills Australia's national employment forecasts from May-25 suggest that over five years, national employment is expected to expand by 6.6% and by 13.7% over ten years. Applying these projections to Castle Hill - Central's employment mix indicates 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

AreaSearch's latest postcode level ATO data for financial year 2022 shows that Castle Hill - Central SA2 has one of the highest incomes in Australia. The median income is $56,731 and the average income stands at $83,714. This contrasts with Greater Sydney's figures of a median income of $56,994 and an average income of $80,856. Based on Wage Price Index growth of 12.61% since financial year 2022, current estimates would be approximately $63,885 (median) and $94,270 (average) as of September 2025. According to the 2021 Census, household, family, and personal incomes in Castle Hill - Central all rank highly nationally, between the 72nd and 86th percentiles. Income distribution shows that 31.3% of residents (3,336 people) earn between $1,500 and $2,999 weekly, mirroring the broader area where 30.9% occupy this bracket. Notably, 37.7% earn above $3,000 weekly, reflecting prosperity in the area. High housing costs consume 16.8% of income, but strong earnings place disposable income at the 83rd percentile nationally. The area's SEIFA income ranking places it in the 9th decile.

Castle Hill - Central displays a diverse mix of dwelling types, with a higher proportion of rental properties than the broader region

Castle Hill - Central's dwelling structure in its latest Census evaluation showed 60.4% houses and 39.6% other dwellings (semi-detached, apartments, 'other' dwellings), compared to Sydney metro's 78.2% houses and 21.8% other dwellings. Home ownership in Castle Hill - Central was at 32.6%, with mortgaged dwellings at 35.8% and rented ones at 31.6%. The median monthly mortgage repayment was $2,700, lower than Sydney metro's average of $3,000, while the median weekly rent was $550, compared to Sydney metro's $580. Nationally, Castle Hill - Central's mortgage repayments were significantly higher at $2,700 versus Australia's average of $1,863, and rents were substantially above the national figure of $375.

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

Family households constitute 80.1% of all households, including 45.0% couples with children, 23.5% couples without children, and 10.5% single parent families. Non-family households account for 19.9%, with lone person households at 18.2% and group households comprising 1.7%. The median household size is 2.9 people, which is smaller than the Greater Sydney average of 3.0.

Castle Hill - Central shows strong educational performance, ranking in the upper quartile nationally when assessed across multiple qualification and achievement indicators

Castle Hill - Central has a notably higher educational attainment compared to broader benchmarks. Specifically, 47.9% of its residents aged 15 years or above hold university qualifications, surpassing the national average of 30.4% and the NSW average of 32.2%. This significant educational advantage positions the area favourably for knowledge-based opportunities. Bachelor degrees are the most prevalent at 30.0%, followed by postgraduate qualifications at 15.1% and graduate diplomas at 2.8%.

Vocational pathways account for 24.4% of qualifications among those aged 15 years or above, with advanced diplomas making up 11.0% and certificates 13.4%. Educational participation is notably high in the area, with 32.0% of residents currently enrolled in formal education. This includes 11.9% in primary education, 8.7% in secondary education, and 5.9% pursuing tertiary education.

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

Castle Hill - Central has 54 active public transport stops, offering a mix of light rail and bus services. These stops are served by 89 individual routes, collectively facilitating 7,064 weekly passenger trips. The area's transport accessibility is rated excellent, with residents on average located 172 meters from the nearest stop.

Service frequency averages 1,009 trips per day across all routes, equating to approximately 130 weekly trips per individual stop.

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

Health outcomes data for Castle Hill - Central shows excellent results across all age groups, with a very low prevalence of common health conditions. The rate of private health cover is exceptionally high at approximately 61% of the total population (6,535 people), compared to 63.7% across Greater Sydney and the national average of 55.3%. The most prevalent medical conditions are asthma and arthritis, affecting 6.2% and 6.0% of residents respectively.

A total of 76.4% of residents report being completely free from medical ailments, compared to 75.9% across Greater Sydney. In Castle Hill - Central, 17.2% of residents are aged 65 and over (1,830 people), which is lower than the 18.9% in Greater Sydney. Senior health outcomes align broadly with those of the general population.

Castle Hill - Central 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-Central has a high level of cultural diversity, with 45.7% speaking a language other than English at home and 46.5% born overseas as of the latest available data. Christianity is the predominant religion in Castle Hill-Central, accounting for 49.7% of its population. Hinduism, however, shows an overrepresentation compared to Greater Sydney, with 6.6% versus 8.6%.

The top three ancestry groups based on parents' country of birth are English (16.8%), Chinese (16.2%), and Australian (15.0%). Notably, Korean (3.6%) and Spanish (0.9%) ethnicities are overrepresented compared to regional figures of 2.3% and 0.5%, respectively. Russian ethnicity is also slightly overrepresented at 0.6%.

Castle Hill - Central's population is slightly older than the national pattern

Castle Hill - Central has a median age of 40, which is slightly higher than Greater Sydney's figure of 37 and Australia's figure of 38. The 45-54 age cohort is notably over-represented in Castle Hill - Central at 15.4%, while the 25-34 age group is under-represented at 9.2%. Between 2021 and present, the 15-24 age group has grown from 11.5% to 13.5%, and the 75-84 cohort has increased from 5.2% to 6.5%. Conversely, the 35-44 age group has declined from 17.2% to 15.7%, and the 5-14 age group has dropped from 16.2% to 15.0%. By 2041, demographic modeling suggests that Castle Hill - Central's age profile will significantly change, with the 45-54 age cohort projected to grow by 1,326 people (81%), from 1,637 to 2,964.