EquitySight.app
Free full calculator →
EquitySight.app
Free full calculator →
ABS 2021 Census · Updated 21 May 2026
Garden Island is an outer-metropolitan suburb of Perth, Australia, with a population of approximately 772, making it a boutique locality. Located approximately 33 km from the Perth CBD, Garden Island is a outer metro area in Western Australia. The median household income is $72,000 per year.
Moderate income levels in Garden Island indicate steady rental demand from working households. While further from the city, improving transport links could boost future demand.
Official Australia Post postcode for Garden Island. A postcode may cover multiple suburbs.
Australia Post Postcode Finder →Usual resident population at the most recent census.
Weekly median rent for occupied homes. Live rental data integration coming soon.
Annual median household income (before tax) across all households.
Straight-line distance from the suburb centroid to the nearest capital city CBD. Actual driving distance will be longer.
Estimated 1 school within or near this suburb.
Find schools near Garden Island on My School →Estimated 1 park and green spaces near this suburb.
Monthly median mortgage repayment for households currently paying off a mortgage.
Proportion of separate houses versus units, townhouses, and other home types. Useful for investors assessing rental demand mix.
Garden Island is a smaller community of 772 — about 14% of the Western Australia suburb median (5,605) — so investors should factor in the narrower buyer pool and longer average time-on-market. Garden Island's median household income of $72,000/year is 28% below the Western Australia suburb median ($99,736) — this is an affordability play where returns lean on yield and patient capital growth rather than demographic premium. At 33 km from Perth, Garden Island is an outer-metro location where buyers are typically trading commute time for floor space and a lower entry price.
How Garden Island stacks up against the median of all Western Australia suburbs in our dataset. Positive values mean Garden Island sits above the state median; negative means below.
| Metric | Garden Island | WA median | Δ vs state |
|---|---|---|---|
| Population | 772 | 5,605 | -86% |
| Median household income | $72,000/yr | $99,736/yr | -28% |
| Distance to CBD | 33 km | 20 km | +65% |
Pre-inspection briefing for Garden Island — every item is derived from public datasets, with full citations in our data sources page.
Limited buy-and-hold upside: a small population of 772 means liquidity is thin and capital growth tends to lag the wider Western Australia market over full cycles.
Median rental data was not captured for Garden Island. Use current realestate.com.au and Domain listings to triangulate a realistic weekly rent before committing, then feed that number into our rental yield calculator.
With a population of 772, the resale market in Garden Island may not reliably reward cosmetic renovations — a longer hold is typically a better strategy at this scale, letting land-value appreciation do the work instead.
Run the numbers on a Garden Island property
Scenario comparison, cash flow analysis, tax modelling, and PDF export — all in one place.
Create free account →Capital-growth expectations for Garden Island are modest for 2026 — incomes 28% below the WA median of $99,736 and a population of 772 suggest gains will lag headline metro markets. Rental fundamentals will need to be verified against live listings, as a clean median rent was not recorded for Garden Island. The EquitySight investment score of 42/100 places Garden Island in the mid tier of Australian suburbs we profile, and overall investor sentiment is cautious heading into the second half of 2026.
Lived in Garden Island? Help other investors with an honest 100-word review. Sign-in required; all reviews are manually moderated before they appear.
Garden Island scores 42/100 on our EquitySight investment framework — a moderate rating. That score is driven by a population of 772, median household income of $72,000/year. Whether it fits your portfolio depends on whether you are targeting cash flow, capital growth, or a value-add renovation — all three are scored with suburb-specific numbers elsewhere on this page.
The main demand drivers in Garden Island are a median household income of $72,000/year, roughly 1 schools and 1 parks within the catchment. Together these shape both owner-occupier and tenant demand and are the factors we weight most heavily in the suburb's investment score.
Garden Island has a usual resident population of approximately 772, compared with a Western Australia suburb median of 5,605 — placing it in the lower half of the state's suburbs by size. Population is the clearest proxy for market depth: more residents mean more transactions and typically a shorter average days-on-market on resale.
Garden Island sits 33 km straight-line from the Perth CBD. This is an outer-metro location; local employment and infrastructure announcements tend to move prices more than CBD connectivity alone.
A reliable median rent was not captured for Garden Island. Benchmark expected weekly rent on realestate.com.au and Domain, or the state rental tribunal's rent dashboard. Most Australian investors target a 4–5% gross yield as a baseline.
A reliable median mortgage figure was not captured for Garden Island. Use our loan serviceability calculator to estimate a realistic monthly repayment for your target purchase price and deposit.
Census data was not complete enough in Garden Island to compute a clean rent-to-mortgage coverage. Use current listings to benchmark weekly rent, then plug your expected purchase price into our rental yield calculator to see whether the investment runs cash-flow positive or negative.
The main risks are a thin buyer pool (772 residents), interest-rate sensitivity, below-median household incomes ($72,000 vs $99,736 state median), the broader Western Australia market cycle. Each of these is covered in the Risk Factors section above with suburb-specific numbers rather than generic warnings.
Every number on this page comes from the ABS 2021 Census of Population and Housing, Australia Post postcode reference data, and OpenStreetMap amenity tiles. The investment score, strategy verdicts, and comparison table are computed deterministically from those inputs — no opinion, no estimation. See our full methodology and the data sources and licences for the formulas we use.