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ABS 2021 Census · Updated 21 May 2026
Porter Lagoon is a regional centre in South Australia, Australia, with a population of approximately 8, making it a boutique locality. Located approximately 125 km from the Adelaide CBD, Porter Lagoon is a regional area in South Australia. The median household income is $117,000 per year.
Above-average earnings in Porter Lagoon support sustained property values. As a regional location, growth prospects depend on local economic conditions and infrastructure investment.
Official Australia Post postcode for Porter 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 Porter 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.
Porter Lagoon is a smaller community of 8 — about 0% of the South Australia suburb median (3,699) — so investors should factor in the narrower buyer pool and longer average time-on-market. Median household income of $117,000/year runs 45% above the South Australia suburb median of $80,964, indicating strong purchasing power and the type of demographic profile that tends to sustain premium property prices through market cycles. Porter Lagoon is 125 km from Adelaide, so the local market tracks regional employment and lifestyle drivers more than CBD-driven commuter demand.
How Porter Lagoon stacks up against the median of all South Australia suburbs in our dataset. Positive values mean Porter Lagoon sits above the state median; negative means below.
| Metric | Porter Lagoon | SA median | Δ vs state |
|---|---|---|---|
| Population | 8 | 3,699 | -100% |
| Median household income | $117,000/yr | $80,964/yr | +45% |
| Median mortgage (monthly) | $3,000 | $1,616 | +86% |
| Distance to CBD | 125 km | 13 km | +862% |
Pre-inspection briefing for Porter Lagoon — every item is derived from public datasets, with full citations in our data sources page.
Limited buy-and-hold upside: a small population of 8 means liquidity is thin and capital growth tends to lag the wider South Australia market over full cycles.
Median rental data was not captured for Porter Lagoon. Use current realestate.com.au and Domain listings to triangulate a realistic weekly rent before committing, then feed that number into our rental yield calculator.
With a population of 8, the resale market in Porter Lagoon may not reliably reward cosmetic renovations — a longer hold is typically a better strategy at this scale, letting land-value appreciation do the work instead.
Run the numbers on a Porter Lagoon property
Scenario comparison, cash flow analysis, tax modelling, and PDF export — all in one place.
Create free account →Capital-growth expectations for Porter Lagoon are modest for 2026 — incomes 45% above the SA median of $80,964 and a population of 8 suggest gains will lag headline metro markets. Rental fundamentals will need to be verified against live listings, as a clean median rent was not recorded for Porter Lagoon. The EquitySight investment score of 47/100 places Porter Lagoon 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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Porter Lagoon scores 47/100 on our EquitySight investment framework — a moderate rating. That score is driven by a population of 8, median household income of $117,000/year. 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 Porter Lagoon are an above-state-median household income of $117,000/year, 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.
Porter Lagoon has a usual resident population of approximately 8, compared with a South Australia suburb median of 3,699 — 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.
Porter Lagoon sits 125 km straight-line from the Adelaide CBD. This is a regional market where CBD distance is only indicative — local industry diversity and commute alternatives matter more.
A reliable median rent was not captured for Porter Lagoon. Benchmark expected weekly rent on realestate.com.au and Domain, or the state rental tribunal's rent dashboard. Most Australian investors target a 4–5% gross yield as a baseline.
The median monthly mortgage repayment in Porter Lagoon is $3,000, or approximately $36,000/year (vs $1,616/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.
Census data was not complete enough in Porter Lagoon to compute a clean rent-to-mortgage coverage. Use current listings to benchmark weekly rent, then plug your expected purchase price into our rental yield calculator to see whether the investment runs cash-flow positive or negative.
The main risks are a thin buyer pool (8 residents), interest-rate sensitivity on the $3,000 median mortgage, the broader South 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.