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ABS 2021 Census · Updated 21 May 2026
Koongamia is a well-established middle-ring suburb of Perth, Australia, with a population of approximately 985, making it a boutique locality. Located approximately 18 km from the Perth CBD, Koongamia is a middle ring area in Western Australia. The median household income is $65,520 per year.
Household earnings in Koongamia are below the state average, which may affect long-term capital growth.
Official Australia Post postcode for Koongamia. 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 Koongamia 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.
Koongamia is a smaller community of 985 — about 18% of the Western Australia suburb median (5,605) — so investors should factor in the narrower buyer pool and longer average time-on-market. Koongamia's median household income of $65,520/year is 34% 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. Median weekly rent of $285 equates to $1,235/month — about 95% of the median mortgage repayment of $1,300/month — meaning rental income covers most of a typical owner's repayment and this is a genuine cash-flow suburb before tax benefits. 18 km from Perth places Koongamia in the middle commuter belt, close enough for daily trips by car or rail but at a materially lower price point than inner suburbs.
How Koongamia stacks up against the median of all Western Australia suburbs in our dataset. Positive values mean Koongamia sits above the state median; negative means below.
| Metric | Koongamia | WA median | Δ vs state |
|---|---|---|---|
| Population | 985 | 5,605 | -82% |
| Median household income | $65,520/yr | $99,736/yr | -34% |
| Median rent (weekly) | $285 | $350 | -19% |
| Median mortgage (monthly) | $1,300 | $1,902 | -32% |
| Distance to CBD | 18 km | 20 km | -10% |
| Separate houses | 82% | 79% | +3pp |
Pre-inspection briefing for Koongamia — every item is derived from public datasets, with full citations in our data sources page.
Limited buy-and-hold upside: a small population of 985 means liquidity is thin and capital growth tends to lag the wider Western Australia market over full cycles.
Strong rental coverage: $285/week (~$1,235/month) covers 95% of the $1,300/month median mortgage repayment, so the shortfall sits at just $65/month. Investors targeting positive cash flow should shortlist this suburb.
With 82% houses in a 985-person market, renovation margins depend on individual street and aspect rather than any suburb-wide story — do comparable-sales analysis before committing capital.
Run the numbers on a Koongamia property
Scenario comparison, cash flow analysis, tax modelling, and PDF export — all in one place.
Create free account →Capital-growth expectations for Koongamia are modest for 2026 — incomes 34% below the WA median of $99,736 and a population of 985 suggest gains will lag headline metro markets. Rental coverage runs at ~95% of the typical mortgage ($1,235/month rent vs $1,300/month repayment), keeping cash flow in positive or near-neutral territory. The EquitySight investment score of 46/100 places Koongamia in the mid tier of Australian suburbs we profile, and overall investor sentiment is cautious heading into the second half of 2026.
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Koongamia scores 46/100 on our EquitySight investment framework — a moderate rating. That score is driven by a population of 985, median household income of $65,520/year and median weekly rent of $285. 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 Koongamia are proximity to Perth (18 km), a median household income of $65,520/year, a dwelling mix that is 82% separate houses, 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.
Koongamia has a usual resident population of approximately 985, 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.
Koongamia sits 18 km straight-line from the Perth CBD. This is comfortable commuter territory, with reasonable rail and road access to the city.
The most recent census recorded a median weekly rent of $285 in Koongamia, equating to approximately $14,820/year in gross rental income (state median $350/week). Market rents have typically drifted above the recorded figure — verify against current listings on realestate.com.au and Domain before making an offer.
The median monthly mortgage repayment in Koongamia is $1,300, or approximately $15,600/year (vs $1,902/month state median). Stress-test your own borrowing at rates 1–2 percentage points above today's to make sure you can still service the loan through an RBA tightening cycle.
A median weekly rent of $285 works out to $1,235/month, covering 95% of the median mortgage repayment of $1,300/month. That leaves a $65/month shortfall (around $780/year before tax benefits), so a typical owner-occupier-priced property here is negatively geared. Actual cash flow depends on your deposit, loan terms, ownership costs and marginal tax rate — run the full numbers in our rental yield calculator.
The main risks are a thin buyer pool (985 residents), interest-rate sensitivity on the $1,300 median mortgage, below-median household incomes ($65,520 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.