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ABS 2021 Census · Updated 21 May 2026
Thirroul is a coastal suburb in New South Wales, Australia, with a population of approximately 6,348, making it a smaller community. Located approximately 57 km from the Sydney CBD, Thirroul is a coastal area in New South Wales. The median household income is $118,612 per year.
Strong household incomes in Thirroul underpin solid property demand. The coastal setting provides a lifestyle factor that underpins property values.
Official Australia Post postcode for Thirroul. 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 2 schools within or near this suburb.
Find schools near Thirroul on My School →Estimated 3 parks 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.
6,348 residents places Thirroul squarely in the middle of the New South Wales suburb size distribution (state median 5,325), with market depth comparable to most NSW localities. Median household income of $118,612/year runs 22% above the New South Wales suburb median of $97,552, indicating strong purchasing power and the type of demographic profile that tends to sustain premium property prices through market cycles. Median weekly rent of $540 equates to $2,340/month — about 90% of the median mortgage repayment of $2,600/month — meaning rental income covers most of a typical owner's repayment and this is a genuine cash-flow suburb before tax benefits. Thirroul is 57 km from Sydney, so the local market tracks regional employment and lifestyle drivers more than CBD-driven commuter demand.
This suburb can suit investors targeting renter demand driven by lifestyle. Insurance, climate risk, and seasonal rental patterns all warrant a close look. Local rents consume roughly 24% of household income — a useful sanity check on tenant affordability.
How Thirroul stacks up against the median of all New South Wales suburbs in our dataset. Positive values mean Thirroul sits above the state median; negative means below.
| Metric | Thirroul | NSW median | Δ vs state |
|---|---|---|---|
| Population | 6,348 | 5,325 | +19% |
| Median household income | $118,612/yr | $97,552/yr | +22% |
| Median rent (weekly) | $540 | $430 | +26% |
| Median mortgage (monthly) | $2,600 | $2,167 | +20% |
| Distance to CBD | 57 km | 45 km | +27% |
| Separate houses | 70% | 76% | -6pp |
Pre-inspection briefing for Thirroul — every item is derived from public datasets, with full citations in our data sources page.
Solid buy-and-hold profile: a population of 6,348 and household income close to the NSW median ($118,612 vs $97,552) give the market enough depth for patient capital growth without the premium entry price of inner suburbs.
Strong rental coverage: $540/week (~$2,340/month) covers 90% of the $2,600/month median mortgage repayment, so the shortfall sits at just $260/month. Investors targeting positive cash flow should shortlist this suburb.
With 70% houses in a 6,348-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 Thirroul property
Scenario comparison, cash flow analysis, tax modelling, and PDF export — all in one place.
Create free account →Property values in Thirroul should track the wider New South Wales market through 2026, with the $118,612/year median household income (22% above the $97,552 state median) keeping the suburb firmly mid-pack. Rental coverage runs at ~90% of the typical mortgage ($2,340/month rent vs $2,600/month repayment), keeping cash flow in positive or near-neutral territory. The EquitySight investment score of 70/100 places Thirroul in the upper-middle tier of Australian suburbs we profile, and overall investor sentiment is constructive heading into the second half of 2026.
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Thirroul scores 70/100 on our EquitySight investment framework — a good rating. That score is driven by a population of 6,348, median household income of $118,612/year and median weekly rent of $540. 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 Thirroul are an above-state-median household income of $118,612/year, a dwelling mix that is 70% separate houses, roughly 2 schools and 3 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.
Thirroul has a usual resident population of approximately 6,348, compared with a New South Wales suburb median of 5,325 — placing it in the upper 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.
Thirroul sits 57 km straight-line from the Sydney 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 $540 in Thirroul, equating to approximately $28,080/year in gross rental income (state median $430/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 Thirroul is $2,600, or approximately $31,200/year (vs $2,167/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 $540 works out to $2,340/month, covering 90% of the median mortgage repayment of $2,600/month. That leaves a $260/month shortfall (around $3,120/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 interest-rate sensitivity on the $2,600 median mortgage, the broader New South Wales 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.