Castle Hill - Central
Statistical Area - sa2

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 is approximately 9,395 as of Aug 2025. This figure represents an increase of 1,718 people since the 2021 Census, which reported a population of 7,677. The growth was inferred from ABS estimates of 8,534 in June 2024 and validated new addresses totalling 846 since the Census date. This results in a density ratio of 2,263 persons per square kilometer, higher than average national locations assessed by AreaSearch. Castle Hill - Central's growth rate of 22.4% since the 2021 census exceeded both its SA3 area (5.6%) and the state level. Overseas migration contributed approximately 80.8% of overall population gains during recent periods.

AreaSearch utilises ABS/Geoscience Australia projections for each SA2 area released in 2024 with a base year of 2022, and NSW State Government's SA2 level projections for areas not covered by this data, released in 2022 with a base year of 2021. Growth rates by age group from these aggregations are applied to all areas for years 2032 to 2041. By 2041, Castle Hill - Central is expected to expand by 8,605 persons based on the latest population numbers, with an increase of 80.2% over the 17-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-26, 5 approvals have been recorded. The average population growth per dwelling built in the area over these five years (FY-21 to FY-25) is 0.1 people per year. New construction has been matching or outpacing demand, offering buyers more options and enabling population growth that could exceed current expectations.

The average construction value of new properties in the area is $446,000, which aligns with regional trends. In FY-26, there have been $55.8 million in commercial approvals, indicating strong commercial development momentum. Compared to Greater Sydney, Castle Hill - Central shows 837.0% higher new home approvals per person, creating greater choice for buyers and indicating robust developer interest in the area. The location has an approximate ratio of 123 people per dwelling approval, suggesting an expanding market. New development consists of 2.0% detached houses and 98.0% attached dwellings, marking a significant departure from existing housing patterns (currently 60.0% houses). This shift towards compact living offers affordable entry pathways and attracts downsizers, investors, and first-time purchasers. Population forecasts indicate Castle Hill - Central will gain approximately 7,533 residents through to 2041.

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

Castle Hill - Central has moderate levels of nearby infrastructure activity, ranking in the 46thth percentile nationally

Changes to local infrastructure significantly influence an area's performance. AreaSearch has identified 27 such projects that could impact the area. Notable ones include Castle Hill Panorama, Castle Grange, expansion of Castle Towers Shopping Centre, and Hills Showground East Precinct. The following list details those expected to be most relevant.

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

Castle Hill - Central has seen below average employment performance when compared to national benchmarks

Castle Hill - Central has a highly educated workforce with strong representation in professional services. Its unemployment rate was 4.6% as of June 2025.

Employment growth over the past year was estimated at 1.2%. As of June 2025, 4,196 residents were employed while the unemployment rate was 0.4% higher than Greater Sydney's rate of 4.2%. Workforce participation was fairly standard at 63.8%, compared to Greater Sydney's 60.0%.

Employment among residents is concentrated in health care & social assistance, professional & technical, and education & training sectors. Transport, postal & warehousing employed just 3.3% of local workers, below Greater Sydney's 5.3%. There were 1.2 workers for every resident, indicating the area functions as an employment hub attracting workers from surrounding areas. Over the 12 months to June 2025, employment increased by 1.2%, while labour force increased by 3.0%, causing the unemployment rate to rise by 1.7 percentage points. In contrast, Greater Sydney saw employment rise by 2.6% and unemployment rise by 0.3 percentage points. State-level data to Sep-25 shows NSW employment contracted by 0.41% (losing 19,270 jobs), with the state unemployment rate at 4.3%, comparing favourably to the national unemployment rate of 4.5%. Jobs and Skills Australia's national employment forecasts from May 2025 suggest national employment will expand by 6.6% over five years and 13.7% over ten years. Applying these projections to Castle Hill - Central's employment mix suggests local growth of 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 - Central had one of the highest incomes in Australia according to AreaSearch data from the ATO for financial year 2022. The median income was $56,731 and the average income stood at $83,714, compared to Greater Sydney's figures of $56,994 and $80,856 respectively. By March 2025, estimates suggest the median income would be approximately $62,744 and the average income around $92,588, based on a 10.6% growth in wages since financial year 2022. Census data shows household, family, and personal incomes all rank high in Castle Hill - Central, between the 73rd and 86th percentiles nationally. The earnings profile indicates that 31.3% of the population (2,940 individuals) fall within the $1,500 - $2,999 income range, similar to the regional figure of 30.9%. A substantial proportion of high earners, at 37.7%, indicates strong economic capacity in Castle Hill - Central. High housing costs consume 16.8% of income, but strong earnings place disposable income at the 84th percentile. 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

Dwelling structure in Castle Hill - Central, as per the latest Census, consisted of 60.4% houses and 39.6% other dwellings (semi-detached, apartments, 'other' dwellings). This compares to Sydney metro's figures of 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 in the area was $2,700, below Sydney metro's average of $3,000. Median weekly rent in Castle Hill - Central was $550, compared to Sydney metro's $580. Nationally, Castle Hill - Central's mortgage repayments were significantly higher than the Australian 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 account for 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 make up the remaining 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

Educational attainment in Castle Hill - Central is notably higher than broader benchmarks. 47.9% 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 30.0%, followed by postgraduate qualifications at 15.1% and graduate diplomas at 2.8%. Vocational pathways account for 24.4%, with advanced diplomas at 11.0% and certificates at 13.4%.

Educational participation is high, with 32.0% of residents currently enrolled in formal education. This includes 11.9% in primary, 8.7% in secondary, and 5.9% pursuing tertiary education. Castle Hill - Central's four schools have a combined enrollment of 2,071 students as of the latest data. The area has significant socio-educational advantages and academic achievement (ICSEA: 1105). The educational mix includes one primary, two secondary, and one K-12 school. School capacity exceeds typical residential needs, with 22.0 places per 100 residents compared to the regional average of 17.4, indicating that the area serves as an educational center for the broader region.

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

Analysis of public transport in Castle Hill - Central indicates 54 active transport stops operating, consisting of lightrail and bus services. These stops are served by 89 individual routes, collectively facilitating 7,064 weekly passenger trips. Transport accessibility is rated excellent, with residents typically located 172 meters from the nearest stop.

Service frequency averages 1,009 trips per day across all routes, resulting in 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 shows excellent results in Castle Hill - Central, with very low prevalence of common health conditions across all age groups. The rate of private health cover is exceptionally high at approximately 61% of the total population (5,759 people), compared to 63.7% across Greater Sydney and a national average of 55.3%. The most common medical conditions in the area are asthma and arthritis, affecting 6.2 and 6.0% of residents respectively, while 76.4% of residents declare themselves completely clear of medical ailments, compared to 75.9% across Greater Sydney.

The area has 17.2% of residents aged 65 and over (1,613 people), which is lower than the 18.9% in Greater Sydney. Health outcomes among seniors are particularly strong, broadly in line with the general population's health profile.

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 high cultural diversity, with 45.7% speaking a language other than English at home and 46.5% born overseas. Christianity is the main religion, accounting for 49.7%. Hinduism is overrepresented at 6.6%, compared to Greater Sydney's 8.6%.

Top ancestry groups are English (16.8%), Chinese (16.2%), and Australian (15.0%). Korean (3.6%) Spanish (0.9%) and Russian (0.6%) are notably overrepresented.

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 average of 38 years. Compared to the Greater Sydney average, Castle Hill-Central has a notably higher proportion of individuals aged 45-54 (15.4%) and a lower proportion of those aged 25-34 (9.2%). Between 2021 and present, the age group 15-24 increased from 11.5% to 13.5%, while the 75-84 cohort grew from 5.2% to 6.5%. Conversely, the 35-44 age group decreased from 17.2% to 15.7%, and the 5-14 group dropped from 16.2% to 15.0%. By 2041, demographic modeling projects a significant shift in Castle Hill-Central's age profile, with the 45-54 age cohort expected to surge by 1,520 people (105%), from 1,443 to 2,964.