Suburb overview
Onkaparinga Hills is a coastal suburb in South Australia, Australia, with a population of approximately 2,610, making it a boutique locality. Located approximately 23 km from the Adelaide CBD, Onkaparinga Hills is a coastal area in South Australia. The median household income is $108,056 per year.
Location
Key indicators
Postcode
5163
Postcode for Onkaparinga Hills, from a community postcode dataset cross-checked against Australia Post. A postcode may cover multiple suburbs.
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Population
2,610
Usual resident population at the most recent census.
Median weekly rent
$540/wk
Median weekly rent — as at Jan–Mar 2026, Consumer & Business Services (SA) (CC BY 4.0).
Distance to CBD
23 km
Straight-line distance from the suburb centroid to the nearest capital city CBD. Actual driving distance will be longer.
Sale prices & yield
Median house price
$996,750
Median house sale price — as at Q1 2026, Valuer-General (SA) (CC BY 4.0). Figure covers suburb (metro Adelaide).
Indicative gross yield
2.8%
Estimated as current median rent × 52 ÷ current median house price. A guide only — not a guaranteed return; excludes costs, vacancy and buying expenses.
Housing
Median monthly mortgage
$1,625/mo
Monthly median mortgage repayment for households currently paying off a mortgage.
Home type
96% houses
Proportion of separate houses versus units, townhouses, and other home types. Useful for investors assessing rental demand mix.
Why people like living in Onkaparinga Hills
- Outer-metro setting about 23 km from Adelaide — more space, quieter streets.
- Predominantly separate houses (96%) — suburban lifestyle with more land.
- Beach lifestyle with coastal walks and outdoor recreation on the doorstep.
Who Onkaparinga Hills suits
Pros and cons
Pros
- Rent sits within an affordable share of local incomes, supporting tenant demand.
- Coastal lifestyle attracts renters and owner-occupiers alike.
- Established infrastructure and existing community base.
Cons
- Traffic can build during peak hours, especially on arterial roads.
- Prices may rise further as demand continues.
Investment insight
Onkaparinga Hills is a smaller community of 2,610 — about 71% 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 $108,056/year runs 33% 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. Median rent of $540/week (as at Jan–Mar 2026, Consumer & Business Services (SA)) equates to roughly $2,340/month — about 144% of the $1,625/month median mortgage repayment recorded at the 2021 Census. On those figures rental income covers most or all of the recorded repayment, but repayments on new loans have risen with interest rates since 2021, so re-run the coverage at today's rates before treating this as a cash-flow suburb. 23 km from Adelaide places Onkaparinga Hills 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 96% of dwellings — 23 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.
Investment tip
This suburb can suit investors targeting renter demand driven by lifestyle. Insurance, climate risk, and seasonal rental patterns all warrant a close look. At the 2021 Census, local rents consumed roughly 19% of household income — a dated but useful sanity check on tenant affordability.
Onkaparinga Hills vs South Australia median
How Onkaparinga Hills stacks up against the median of all South Australia suburbs in our dataset. Positive values mean Onkaparinga Hills sits above the state median; negative means below.
| Metric | Onkaparinga Hills | SA median | Δ vs state |
|---|---|---|---|
| Population | 2,610 | 3,699 | -29% |
| Median household income | $108,056/yr | $80,964/yr | +33% |
| Median rent (weekly, 2021 Census) | $385 | $320 | +20% |
| Median mortgage (monthly, 2021 Census) | $1,625 | $1,616 | +1% |
| Distance to CBD | 23 km | 13 km | +77% |
| Separate houses | 96% | 73% | +23pp |
Investor checklist
Pre-inspection briefing for Onkaparinga Hills — every item is derived from public datasets, with full citations in our data sources page.
- Market depth: 2,610 residents — 71% of the SA suburb median (3,699).
- Purchasing power: median household income $108,056/year (+33% vs South Australia suburb median of $80,964).
- Cash-flow coverage (2021 Census): $385/week rent (≈ $1,668/month) covered ~103% of the $1,625/month median mortgage at the 2021 Census — verify against current rents and rates.
- CBD access: 23 km straight-line from Adelaide (state suburb median 13 km).
- Dwelling mix: 96% separate houses — house-dominant market (vs 73% state median).
- Rate stress-test: budget ~$163/month extra for a 1-percentage-point RBA rate rise on top of the $1,625/month median repayment.
- Tenant rent burden: 19% of the median household income is spent on rent — comfortably affordable.
Investment strategy
Strong buy-and-hold fundamentals: household incomes run 33% above the South Australia suburb median ($108,056 vs $80,964), and the 23 km CBD distance keeps this suburb in the primary demand zone. In South Australia, suburbs with this profile have historically clustered in the upper tercile of 10-year capital growth.
Strong rental coverage at the 2021 Census: $385/week (~$1,668/month) covered 103% of the $1,625/month median mortgage, a shortfall of just $0/month. Both rents and repayments have moved since 2021 — verify current figures, though this suburb has historically leaned cash-flow-friendly.
With 96% houses in a 2,610-person market, renovation margins depend on individual street and aspect rather than any suburb-wide story — do comparable-sales analysis before committing capital.
Risk factors
- Interest-rate sensitivity: the $1,625/month median mortgage in Onkaparinga Hills means a 1-percentage-point RBA rate rise could add roughly $163/month to repayments, reducing buyer borrowing capacity and cooling prices.
- Premium-pricing risk: incomes 33% above the South Australia median ($108,056 vs $80,964) correlate with elevated purchase prices and compressed gross yields — enter only with a clear capital-growth thesis and a comfortable deposit.
- Liquidity risk: with 2,610 residents, Onkaparinga Hills has a thinner pool of buyers and tenants than larger suburbs. Expect longer days-on-market on resale and budget for potential vacancy gaps between tenancies.
- Onkaparinga Hills is 23 km from the CBD — not close enough to benefit from the inner-ring pricing halo, so growth depends more heavily on local infrastructure decisions and the wider South Australia market cycle.
- House-dominant stock: 96% of dwellings are separate houses, so value is concentrated in land — weather events, insurance repricing and land-tax changes hit investors here more directly than in a unit-heavy suburb.
Run the numbers on a Onkaparinga Hills property
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Start your journey near Onkaparinga Hills →2026 outlook
Onkaparinga Hills enters 2026 with a demographic tailwind — household incomes 33% above the South Australia suburb median of $80,964 and a population of 2,610 give it the depth and purchasing power to outperform the wider SA market over the next 12–18 months. At the 2021 Census, rental coverage ran at ~103% of the typical mortgage ($1,668/month rent vs $1,625/month repayment), keeping cash flow in positive or near-neutral territory. Verify against current rents and rates. Overall investor sentiment for Onkaparinga Hills is balanced heading into the second half of 2026, based on its income, rent and mortgage profile relative to the South Australia median.
Frequently asked questions
Is Onkaparinga Hills a good suburb for investment?
Whether Onkaparinga Hills suits you depends on your strategy, but the fundamentals are concrete: a population of 2,610, a median household income of $108,056/year and median weekly rent of $385. Weigh those against your goal — cash flow, capital growth, or a value-add renovation — each of which we break down with suburb-specific ABS numbers elsewhere on this page.
What drives property demand in Onkaparinga Hills?
The main demand drivers in Onkaparinga Hills are proximity to Adelaide (23 km), an above-state-median household income of $108,056/year, a dwelling mix that is 96% separate houses. Together these shape both owner-occupier and tenant demand.
What is the population of Onkaparinga Hills?
Onkaparinga Hills has a usual resident population of approximately 2,610, 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.
How far is Onkaparinga Hills from the Adelaide CBD?
Onkaparinga Hills sits 23 km straight-line from the Adelaide CBD. This is comfortable commuter territory, with reasonable rail and road access to the city.
What is the median rent in Onkaparinga Hills?
The median weekly rent in Onkaparinga Hills is $540 (as at Jan–Mar 2026, Consumer & Business Services (SA)), equating to approximately $28,080/year in gross rental income. Confirm against current listings on realestate.com.au and Domain before making an offer.
What is the typical mortgage repayment in Onkaparinga Hills?
The median monthly mortgage repayment in Onkaparinga Hills is $1,625, or approximately $19,500/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.
Is Onkaparinga Hills cash-flow positive for investors?
A median weekly rent of $385 works out to $1,668/month, covering 103% of the median mortgage repayment of $1,625/month. That means rent exceeds the median repayment by roughly $43/month, so on these numbers Onkaparinga Hills leans cash-flow-positive before accounting for strata, council rates, insurance and maintenance. Actual cash flow depends on your deposit, loan terms, ownership costs and marginal tax rate — run the full numbers in our rental yield calculator.
What are the main risks of investing in Onkaparinga Hills?
The main risks are a thin buyer pool (2,610 residents), interest-rate sensitivity on the $1,625 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.
How we built this Onkaparinga Hills profile
The population figure on this page comes from the ABS 2021 Census. The postcode comes from a community postcode dataset cross-checked against Australia Post. The dwelling mix is from the ABS 2021 Census. The median household income is the ABS 2021 Census median weekly household income, annualised. Distance to the CBD is calculated from the suburb's ABS centroid. The Census median rent and mortgage figures are 2021 figures and are labelled as such wherever they appear — they are five years old and have moved substantially since. The current median weekly rent in Key indicators is a genuine recent figure from Consumer & Business Services (SA) (Jan–Mar 2026), published under a Creative Commons licence and dated on the page. The median sale price shown comes from Valuer-General (SA) (Q1 2026), published under a Creative Commons licence and dated on the page. We do not publish an investment score or school/park counts for this suburb. See our methodology and data sources for exactly what's measured and what's estimated.