ABS 2021 Census · Updated 31 March 2026
Onslow is a regional centre in Western Australia, Australia, with a population of approximately 829, making it a boutique locality. Located approximately 1145 km from the Perth CBD, Onslow is a regional area in Western Australia. The median household income is $134,992 AUD per year (ABS 2021 Census).
Strong household incomes in Onslow underpin solid property demand. Regional positioning means lower entry costs but potentially longer hold periods for capital gains.
Map shows Onslow, Western Australia, Australia.
Official Australia Post postcode for Onslow. 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 Onslow 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 →As a regional centre, Onslow 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 $240/week (ABS 2021) indicates an affordable rental market. Owner-occupiers face a median mortgage repayment of $1,825/month. A median household income of $134,992/year supports premium property values and indicates a well-employed resident base.
A buy-and-hold approach in Onslow could work well with careful property selection and a longer time horizon.
Achieving strong cash flow in Onslow is challenging at current rent-to-price ratios.
Renovation or flip strategies in Onslow face headwinds from a smaller buyer pool and slower turnover.
Run the numbers on a Onslow property
Scenario comparison, cash flow analysis, tax modelling, and PDF export — all in one place.
Create free account →Onslow faces a cautious growth outlook for 2026 — investors should focus on yield rather than short-term gains. Landlords in Onslow may face longer tenant search times; competitive pricing will be important. Investor sentiment is cautiously optimistic — selective opportunities exist for well-researched buyers.
Onslow is a regional area in Western Australia with a population of 829. The median rent is $240/week and the median household income is $134,992/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 Onslow include regional employment hubs, lifestyle, and affordability. 48% of dwellings are separate houses. The area has approximately 1 schools and 1 parks nearby.
According to the ABS 2021 Census, Onslow has a population of approximately 829. For historical population trends and intercensal estimates, visit the ABS Census Data Explorer at abs.gov.au.
Onslow is approximately 1145 km straight-line distance from the Perth CBD (calculated from ABS 2021 suburb centroid coordinates). As a regional or remote location, travel to the capital is significant — local amenities and employment are important investment considerations.