ABS 2021 Census · Updated 31 March 2026
Castle Hill is a regional centre in New South Wales, Australia, with a population of approximately 40,874, making it a sizeable community. Located approximately 25 km from the Sydney CBD, Castle Hill is a regional area in New South Wales. The median household income is $132,652 AUD per year (ABS 2021 Census).
Above-average earnings in Castle Hill support sustained property values. Regional positioning means lower entry costs but potentially longer hold periods for capital gains.
Map shows Castle Hill, New South Wales, Australia.
Official Australia Post postcode for Castle Hill. A postcode may cover multiple suburbs.
Australia Post Postcode Finder →Usual resident population at census night. Source: ABS 2021 Census of Population and Housing.
ABS Census Data →Weekly median rent for occupied private dwellings. Source: ABS 2021 Census. Live rental data integration coming soon.
State Rental Authority →Annual median household income (before tax) for all households. Source: ABS 2021 Census.
ABS Census Data →Straight-line distance from the suburb centroid (ABS 2021 SAL geography) to the nearest capital city CBD. Actual driving distance will be longer.
Estimated 10 schools within or near this suburb based on ABS 2021 data.
Find schools near Castle Hill on My School →Estimated 16 parks and green spaces near this suburb. Source: ABS 2021 data.
Monthly median mortgage repayment for households currently paying off a mortgage. Source: ABS 2021 Census.
ABS Census Data →Proportion of separate houses vs units, townhouses, and other dwelling types. Source: ABS 2021 Census. Relevant for investors assessing rental demand mix.
ABS Census Data →As a regional centre, Castle Hill serves a wide catchment area. Regional property can offer higher rental yields than metro equivalents, though investors should assess local employment diversity and infrastructure plans. The median rent of $560/week (ABS 2021) indicates a mid-range rental market. Owner-occupiers face a median mortgage repayment of $3,000/month. A median household income of $132,652/year supports premium property values and indicates a well-employed resident base.
Castle Hill offers moderate buy-and-hold potential — look for properties with value-add opportunities.
Strong tenant demand in Castle Hill underpins consistent rental income and low vacancy risk.
Renovation or flip strategies in Castle Hill face headwinds from a smaller buyer pool and slower turnover.
Run the numbers on a Castle Hill property
Scenario comparison, cash flow analysis, tax modelling, and PDF export — all in one place.
Create free account →Castle Hill faces a cautious growth outlook for 2026 — investors should focus on yield rather than short-term gains. Rental demand is expected to be stable, though landlords may need to remain competitive on pricing. Confidence in Castle Hill's medium-term prospects is reflected in sustained buyer interest.
Castle Hill is a regional area in New South Wales with a population of 40,874. The median rent is $560/week and the median household income is $132,652/year (ABS 2021 Census). As with any property investment, conduct thorough due diligence on current listings, vacancy rates, and local infrastructure plans before committing.
Key demand drivers in Castle Hill include regional employment hubs, lifestyle, and affordability. 69% of dwellings are separate houses. The area has approximately 10 schools and 16 parks nearby.
According to the ABS 2021 Census, Castle Hill has a population of approximately 40,874. For historical population trends and intercensal estimates, visit the ABS Census Data Explorer at abs.gov.au.
Castle Hill is approximately 25 km straight-line distance from the Sydney CBD (calculated from ABS 2021 suburb centroid coordinates). This is within comfortable commuting range with good transport links.