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ABS 2021 Census · Updated 21 May 2026
Custon is a regional centre in South Australia, Australia, with a population of approximately 19, making it a boutique locality. Located approximately 271 km from the Adelaide CBD, Custon is a regional area in South Australia. The median household income is $100,724 per year.
Strong household incomes in Custon underpin solid property demand. As a regional location, growth prospects depend on local economic conditions and infrastructure investment.
Official Australia Post postcode for Custon. 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 Custon 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.
Custon is a smaller community of 19 — about 1% 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 $100,724/year runs 24% 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. The median weekly rent of $200 translates to approximately $10,400/year in gross rental income, setting the upper bound on yield before vacancy, rates, insurance and maintenance. Custon is 271 km from Adelaide, so the local market tracks regional employment and lifestyle drivers more than CBD-driven commuter demand. Separate houses make up 100% of dwellings — 27 percentage points above the South Australia median of 73% — pointing to a family-oriented, land-rich market where value is concentrated in the underlying block.
How Custon stacks up against the median of all South Australia suburbs in our dataset. Positive values mean Custon sits above the state median; negative means below.
| Metric | Custon | SA median | Δ vs state |
|---|---|---|---|
| Population | 19 | 3,699 | -99% |
| Median household income | $100,724/yr | $80,964/yr | +24% |
| Median rent (weekly) | $200 | $320 | -37% |
| Distance to CBD | 271 km | 13 km | +1985% |
| Separate houses | 100% | 73% | +27pp |
Pre-inspection briefing for Custon — every item is derived from public datasets, with full citations in our data sources page.
Limited buy-and-hold upside: a small population of 19 means liquidity is thin and capital growth tends to lag the wider South Australia market over full cycles.
Gross rent of $200/week (~$10,400/year) sets the yield ceiling. Cross-check against your purchase price to confirm whether this suburb hits the 4–5% gross yield most Australian investors target.
With 100% houses in a 19-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 Custon property
Scenario comparison, cash flow analysis, tax modelling, and PDF export — all in one place.
Create free account →Capital-growth expectations for Custon are modest for 2026 — incomes 24% above the SA median of $80,964 and a population of 19 suggest gains will lag headline metro markets. Rents sit around $200/week, setting the baseline gross rental income at roughly $10,400/year — refine this against current listings before running your numbers. The EquitySight investment score of 43/100 places Custon 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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Custon scores 43/100 on our EquitySight investment framework — a moderate rating. That score is driven by a population of 19, median household income of $100,724/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 Custon are an above-state-median household income of $100,724/year, a dwelling mix that is 100% 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.
Custon has a usual resident population of approximately 19, 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.
Custon sits 271 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.
The most recent census recorded a median weekly rent of $200 in Custon, equating to approximately $10,400/year in gross rental income (state median $320/week). Market rents have typically drifted above the recorded figure — verify against current listings on realestate.com.au and Domain before making an offer.
A reliable median mortgage figure was not captured for Custon. Use our loan serviceability calculator to estimate a realistic monthly repayment for your target purchase price and deposit.
Census data was not complete enough in Custon 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 (19 residents), interest-rate sensitivity, 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.