ABS 2021 Census · Updated 31 March 2026
Castlecrag is a well-established middle-ring suburb of Sydney, Australia, with a population of approximately 2,965, making it a boutique locality. Located approximately 8 km from the Sydney CBD, Castlecrag is a middle ring area in New South Wales. The median household income is $243,100 AUD per year (ABS 2021 Census).
Above-average earnings in Castlecrag support sustained property values. The short commute to the city centre is a key demand driver.
Map shows Castlecrag, New South Wales, Australia.
Official Australia Post postcode for Castlecrag. 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 1 school within or near this suburb based on ABS 2021 data.
Find schools near Castlecrag on My School →Estimated 1 park 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 →Castlecrag's middle-ring location balances affordability with accessibility. These suburbs often benefit from established infrastructure, good schools, and transport links — making them attractive to families and long-term tenants. The median rent of $1,010/week (ABS 2021) indicates a premium rental market. Owner-occupiers face a median mortgage repayment of $4,333/month. A median household income of $243,100/year supports premium property values and indicates a well-employed resident base. 90% of dwellings are separate houses, indicating a predominantly family-oriented, land-rich market.
Solid fundamentals in Castlecrag support capital growth over a medium to long hold period.
Strong tenant demand in Castlecrag underpins consistent rental income and low vacancy risk.
Limited buyer depth in Castlecrag makes flip strategies higher-risk — consider rental conversion instead.
Run the numbers on a Castlecrag property
Scenario comparison, cash flow analysis, tax modelling, and PDF export — all in one place.
Create free account →The outlook for capital growth in Castlecrag is encouraging heading into 2026, driven by constrained supply and buyer competition. Tenants in Castlecrag have options — presenting well-maintained properties is key to minimising vacancy. Castlecrag remains on the radar of active property investors in New South Wales.
Castlecrag is a middle ring area in New South Wales with a population of 2,965. The median rent is $1,010/week and the median household income is $243,100/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 Castlecrag include established amenities and transport access. 90% of dwellings are separate houses. The area has approximately 1 schools and 1 parks nearby.
According to the ABS 2021 Census, Castlecrag has a population of approximately 2,965. For historical population trends and intercensal estimates, visit the ABS Census Data Explorer at abs.gov.au.
Castlecrag is approximately 8 km straight-line distance from the Sydney CBD (calculated from ABS 2021 suburb centroid coordinates). This close proximity means excellent access to employment, dining, and entertainment.