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ABS 2021 Census · Updated 21 May 2026
Casula is an outer-metropolitan suburb of Sydney, Australia, with a population of approximately 16,584, making it a smaller community. Located approximately 30 km from the Sydney CBD, Casula is a outer metro area in New South Wales. The median household income is $89,960 per year.
Household incomes in Casula sit in a comfortable mid-range for the New South Wales market.
Official Australia Post postcode for Casula. 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 4 schools within or near this suburb.
Find schools near Casula on My School →Estimated 7 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.
With 16,584 residents, Casula is one of New South Wales's more populous suburbs — roughly 3.1× the state median of 5,325 — giving it a deep buyer and tenant pool that typically supports higher transaction volumes and shorter average days on market. Household income of $89,960/year is 8% below the New South Wales median of $97,552, typically translating into lower entry prices and a tenant base more sensitive to rent increases. Median weekly rent of $450 equates to $1,950/month — about 90% of the median mortgage repayment of $2,167/month — meaning rental income covers most of a typical owner's repayment and this is a genuine cash-flow suburb before tax benefits. At 30 km from Sydney, Casula is an outer-metro location where buyers are typically trading commute time for floor space and a lower entry price.
This suburb suits long-term investors due to steady population growth and affordable entry prices. Look for established streets close to schools and shops rather than raw new-estate land. Local rents consume roughly 26% of household income — a useful sanity check on tenant affordability.
How Casula stacks up against the median of all New South Wales suburbs in our dataset. Positive values mean Casula sits above the state median; negative means below.
| Metric | Casula | NSW median | Δ vs state |
|---|---|---|---|
| Population | 16,584 | 5,325 | +211% |
| Median household income | $89,960/yr | $97,552/yr | -8% |
| Median rent (weekly) | $450 | $430 | +5% |
| Median mortgage (monthly) | $2,167 | $2,167 | 0% |
| Distance to CBD | 30 km | 45 km | -33% |
| Separate houses | 67% | 76% | -9pp |
Pre-inspection briefing for Casula — every item is derived from public datasets, with full citations in our data sources page.
Moderate buy-and-hold potential: Casula's 16,584-person market and $89,960 median household income work for investors who are selective on street location and property quality rather than counting on a suburb-wide rerating.
Strong rental coverage: $450/week (~$1,950/month) covers 90% of the $2,167/month median mortgage repayment, so the shortfall sits at just $217/month. Investors targeting positive cash flow should shortlist this suburb.
With 67% houses in a 16,584-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 Casula property
Scenario comparison, cash flow analysis, tax modelling, and PDF export — all in one place.
Create free account →Property values in Casula should track the wider New South Wales market through 2026, with the $89,960/year median household income (8% below the $97,552 state median) keeping the suburb firmly mid-pack. Rental coverage runs at ~90% of the typical mortgage ($1,950/month rent vs $2,167/month repayment), keeping cash flow in positive or near-neutral territory. The EquitySight investment score of 61/100 places Casula in the upper-middle tier of Australian suburbs we profile, and overall investor sentiment is balanced heading into the second half of 2026.
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Casula scores 61/100 on our EquitySight investment framework — a good rating. That score is driven by a population of 16,584, median household income of $89,960/year and median weekly rent of $450. 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 Casula are a median household income of $89,960/year, a dwelling mix that is 67% separate houses, roughly 4 schools and 7 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.
Casula has a usual resident population of approximately 16,584, 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.
Casula sits 30 km straight-line from the Sydney CBD. This is an outer-metro location; local employment and infrastructure announcements tend to move prices more than CBD connectivity alone.
The most recent census recorded a median weekly rent of $450 in Casula, equating to approximately $23,400/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 Casula is $2,167, or approximately $26,004/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 $450 works out to $1,950/month, covering 90% of the median mortgage repayment of $2,167/month. That leaves a $217/month shortfall (around $2,604/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 $2,167 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.