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ABS 2021 Census · Updated 21 May 2026
Marlow Lagoon is a well-established middle-ring suburb of Darwin, Australia, with a population of approximately 754, making it a boutique locality. Located approximately 13 km from the Darwin CBD, Marlow Lagoon is a middle ring area in Northern Territory. The median household income is $188,760 per year.
Strong household incomes in Marlow Lagoon underpin solid property demand. Close CBD access strengthens tenant appeal and resale value.
Official Australia Post postcode for Marlow Lagoon. 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 Marlow Lagoon 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.
Marlow Lagoon is a smaller community of 754 — about 25% of the Northern Territory suburb median (3,057) — so investors should factor in the narrower buyer pool and longer average time-on-market. Median household income of $188,760/year runs 67% above the Northern Territory suburb median of $113,308, indicating strong purchasing power and the type of demographic profile that tends to sustain premium property prices through market cycles. Median weekly rent of $550 equates to $2,383/month — about 95% of the median mortgage repayment of $2,500/month — meaning rental income covers most of a typical owner's repayment and this is a genuine cash-flow suburb before tax benefits. 13 km from Darwin places Marlow Lagoon in the middle commuter belt, close enough for daily trips by car or rail but at a materially lower price point than inner suburbs. Separate houses make up 94% of dwellings — 26 percentage points above the Northern Territory median of 68% — pointing to a family-oriented, land-rich market where value is concentrated in the underlying block.
How Marlow Lagoon stacks up against the median of all Northern Territory suburbs in our dataset. Positive values mean Marlow Lagoon sits above the state median; negative means below.
| Metric | Marlow Lagoon | NT median | Δ vs state |
|---|---|---|---|
| Population | 754 | 3,057 | -75% |
| Median household income | $188,760/yr | $113,308/yr | +67% |
| Median rent (weekly) | $550 | $360 | +53% |
| Median mortgage (monthly) | $2,500 | $1,950 | +28% |
| Distance to CBD | 13 km | 15 km | -13% |
| Separate houses | 94% | 68% | +26pp |
Pre-inspection briefing for Marlow Lagoon — every item is derived from public datasets, with full citations in our data sources page.
Strong buy-and-hold fundamentals: household incomes run 67% above the Northern Territory suburb median ($188,760 vs $113,308), and the 13 km CBD distance keeps this suburb in the primary demand zone. In Northern Territory, suburbs with this profile have historically clustered in the upper tercile of 10-year capital growth.
Strong rental coverage: $550/week (~$2,383/month) covers 95% of the $2,500/month median mortgage repayment, so the shortfall sits at just $117/month. Investors targeting positive cash flow should shortlist this suburb.
With 94% houses in a 754-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 Marlow Lagoon property
Scenario comparison, cash flow analysis, tax modelling, and PDF export — all in one place.
Create free account →Marlow Lagoon enters 2026 with a demographic tailwind — household incomes 67% above the Northern Territory suburb median of $113,308 and a population of 754 give it the depth and purchasing power to outperform the wider NT market over the next 12–18 months. Rental coverage runs at ~95% of the typical mortgage ($2,383/month rent vs $2,500/month repayment), keeping cash flow in positive or near-neutral territory. The EquitySight investment score of 75/100 places Marlow Lagoon 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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Marlow Lagoon scores 75/100 on our EquitySight investment framework — a good rating. That score is driven by a population of 754, median household income of $188,760/year and median weekly rent of $550. 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 Marlow Lagoon are proximity to Darwin (13 km), an above-state-median household income of $188,760/year, a dwelling mix that is 94% 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.
Marlow Lagoon has a usual resident population of approximately 754, compared with a Northern Territory suburb median of 3,057 — 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.
Marlow Lagoon sits 13 km straight-line from the Darwin 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 $550 in Marlow Lagoon, equating to approximately $28,600/year in gross rental income (state median $360/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 Marlow Lagoon is $2,500, or approximately $30,000/year (vs $1,950/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 $550 works out to $2,383/month, covering 95% of the median mortgage repayment of $2,500/month. That leaves a $117/month shortfall (around $1,404/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 (754 residents), interest-rate sensitivity on the $2,500 median mortgage, the broader Northern Territory 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.