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ABS 2021 Census · Updated 21 May 2026
Lake Biddy is a regional centre in Western Australia, Australia, with a population of approximately 59, making it a boutique locality. Located approximately 309 km from the Perth CBD, Lake Biddy is a regional area in Western Australia. The median household income is $58,500 per year.
Household earnings in Lake Biddy are below the state average, which may affect long-term capital growth. As a regional location, growth prospects depend on local economic conditions and infrastructure investment.
Official Australia Post postcode for Lake Biddy. 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 Lake Biddy 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.
Lake Biddy is a smaller community of 59 — about 1% of the Western Australia suburb median (5,605) — so investors should factor in the narrower buyer pool and longer average time-on-market. Lake Biddy's median household income of $58,500/year is 41% 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 $200 equates to $867/month — about 795% of the median mortgage repayment of $109/month — meaning rental income covers most of a typical owner's repayment and this is a genuine cash-flow suburb before tax benefits. Lake Biddy is 309 km from Perth, so the local market tracks regional employment and lifestyle drivers more than CBD-driven commuter demand.
How Lake Biddy stacks up against the median of all Western Australia suburbs in our dataset. Positive values mean Lake Biddy sits above the state median; negative means below.
| Metric | Lake Biddy | WA median | Δ vs state |
|---|---|---|---|
| Population | 59 | 5,605 | -99% |
| Median household income | $58,500/yr | $99,736/yr | -41% |
| Median rent (weekly) | $200 | $350 | -43% |
| Median mortgage (monthly) | $109 | $1,902 | -94% |
| Distance to CBD | 309 km | 20 km | +1445% |
| Separate houses | 92% | 79% | +13pp |
Pre-inspection briefing for Lake Biddy — every item is derived from public datasets, with full citations in our data sources page.
Limited buy-and-hold upside: a small population of 59 means liquidity is thin and capital growth tends to lag the wider Western Australia market over full cycles.
Strong rental coverage: $200/week (~$867/month) covers 795% of the $109/month median mortgage repayment, so the shortfall sits at just $0/month. Investors targeting positive cash flow should shortlist this suburb.
With 92% houses in a 59-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 Lake Biddy property
Scenario comparison, cash flow analysis, tax modelling, and PDF export — all in one place.
Create free account →Capital-growth expectations for Lake Biddy are modest for 2026 — incomes 41% below the WA median of $99,736 and a population of 59 suggest gains will lag headline metro markets. Rental coverage runs at ~795% of the typical mortgage ($867/month rent vs $109/month repayment), keeping cash flow in positive or near-neutral territory. The EquitySight investment score of 26/100 places Lake Biddy in the lower tier of Australian suburbs we profile, and overall investor sentiment is cautious heading into the second half of 2026.
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Lake Biddy scores 26/100 on our EquitySight investment framework — a weak rating. That score is driven by a population of 59, median household income of $58,500/year and median weekly rent of $200. 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 Lake Biddy are a median household income of $58,500/year, a dwelling mix that is 92% 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.
Lake Biddy has a usual resident population of approximately 59, 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.
Lake Biddy sits 309 km straight-line from the Perth CBD. This is a regional market where CBD distance is only indicative — local industry diversity and commute alternatives matter more.
The most recent census recorded a median weekly rent of $200 in Lake Biddy, equating to approximately $10,400/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 Lake Biddy is $109, or approximately $1,308/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 $200 works out to $867/month, covering 795% of the median mortgage repayment of $109/month. That means rent exceeds the median repayment by roughly $758/month, so on these numbers Lake Biddy leans cash-flow-positive before accounting for strata, council rates, insurance and maintenance. 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 (59 residents), interest-rate sensitivity on the $109 median mortgage, below-median household incomes ($58,500 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.