ABS 2021 Census · Updated 31 March 2026
Sydenham is a well-established middle-ring suburb of Sydney, Australia, with a population of approximately 1,100, making it a boutique locality. Located approximately 7 km from the Sydney CBD, Sydenham is a middle ring area in New South Wales. The median household income is $116,740 AUD per year (ABS 2021 Census).
Strong household incomes in Sydenham underpin solid property demand. The short commute to the city centre is a key demand driver.
Map shows Sydenham, New South Wales, Australia.
Official Australia Post postcode for Sydenham. 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 Sydenham 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 →Sydenham'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 $580/week (ABS 2021) indicates a mid-range rental market. Owner-occupiers face a median mortgage repayment of $2,817/month. A median household income of $116,740/year supports premium property values and indicates a well-employed resident base. With only 30% separate houses, Sydenham has a significant apartment and unit market — typical of inner-city investment corridors.
Sydenham's established location and strong demographics make it well-suited to a long-term buy-and-hold strategy.
Sydenham's rental market favours investors seeking yield — occupancy rates are typically strong in this area.
The resale market in Sydenham may not support quick-turnaround renovation projects.
Run the numbers on a Sydenham property
Scenario comparison, cash flow analysis, tax modelling, and PDF export — all in one place.
Create free account →Sydenham enters 2026 with positive growth momentum, supported by strong local demographics and sustained demand. The rental market in Sydenham should see steady occupancy, with moderate upward pressure on rents. Confidence in Sydenham's medium-term prospects is reflected in sustained buyer interest.
Sydenham is a middle ring area in New South Wales with a population of 1,100. The median rent is $580/week and the median household income is $116,740/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 Sydenham include established amenities and transport access. 30% of dwellings are separate houses. The area has approximately 1 schools and 1 parks nearby.
According to the ABS 2021 Census, Sydenham has a population of approximately 1,100. For historical population trends and intercensal estimates, visit the ABS Census Data Explorer at abs.gov.au.
Sydenham is approximately 7 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.