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Suburb profile ·Onkaparinga LGA · SA ·5159

Flagstaff Hill SA 5159

Flagstaff Hill is in Onkaparinga LGA, SA, postcode 5159, with population 10,184.

The read

Livability-led

There are enough stretched or weaker signals here that you should assume trade-offs rather than a clean story. Use compare mode to see whether the downside is price, local quality, or weaker momentum before treating it as a target suburb.

$575/wk
-5.6% YoY
Mar 2025 → Mar 2026 · 5 periods
SA private rent report · suburb grain · Mar 2026
$688
$575
Mar 2025Mar 2026
Why it fits

Transport coverage adds a practical access signal. Higher SEIFA context supports a stronger local-quality read.

What to check

Gross yield looks low for an income-first use case.

Median house
$1.1M
House median, latest period
7.0%YoY D7 vs AU
Median rent
$575/wk
Income-stretched rent market
5.6%YoY D10 vs AU
Gross yield
2.8%
Low yield band
D8 vs AU
Population
10,184
10K local footprint
D10 vs AU
Schools
2
Matched school context
D8 vs AU
Solar
9,003
471 added 12mo · 48MW

Price history

HousesUnits

Houses to Q1'26 · Units to 2024 — house and unit medians are released on separate cycles, so their latest period can differ.

Trend & investor depth

Indicative cashflow-$588/wk (-$30,582/yr) · interest-only @ 6.1%, 80% LVR

Indicative cashflow is interest-only and excludes tax — use the calculator for a full projection.

Affordability

Buying
10.0x
median home price as a multiple of annual household income
Stretched
Renting
28%
median weekly rent as a share of gross household income (the 30% rule)
Manageable

Owners with a mortgage repay a median of $1,733/mo, while renters pay about $2,492/mo — renting runs $759/mo higher on these medians.

Median price
$1.09M
Household income · yr
$108K
Median rent · wk
$575
Owner mortgage · mo
$1,733
Gross yield
2.8%

Household income

$108K household · yr+43.6% vs SA suburb median
Personal
$44K
Family
$120K
Household
$108K

Schools

Total2
Avg ICSEA1070
Students858
Government2
  • Craigburn Primary SchoolPrimary · Government · ICSEA 1074Zoned
  • Flagstaff Hill Primary SchoolPrimary · Government · ICSEA 1067

1 of 2 schools here operate published enrolment zones (catchments). Zone boundaries set eligibility — check the official source for the exact catchment. Not enrolment advice.

Crime 2024-25
95
933 per 100k
D1 vs AU

Crime

Rate · per 100k933
Total incidents95· 2024-25
  • Assault2251%
  • Break And Enter716%
  • Drug Offences00%
  • Fraud1433%

Full data detail

Flagstaff Hill SA — Property Data and Demographics

Flagstaff Hill (postcode 5159) is a settled mid-to-large suburb in South Australia within the Onkaparinga local government area. It is home to about 10,184 residents, with an established demographic and a median age of 43. Households earn a median income of $108K per year, with an average household size of 2.7 people. Recent annual estimates show population movement staying broadly stable across the broader catchment, with population growth running at +0.9% year-on-year at the LGA level. SA employment has moved +2.1% year-on-year in the official Jobs and Skills Australia NERO series, which provides the broader jobs backdrop for this suburb. SA also had 23 Commonwealth-backed major projects under construction, 2 underway, and 11 in planning as at 2 October 2024, which is useful as a broader delivery backdrop rather than a suburb-specific project count. The most common occupations are professionals, managers, clerical & administrative. Employment in the area leans toward healthcare and education. The top ancestries reported are English, Australian, Scottish.

Flagstaff Hill has a median house price of $1.1 million, which has risen solidly by 7% year-on-year. Units have a median price of $612,000 (+21.7% YoY). The current median weekly rent is $575. This gives a gross rental yield of approximately 2.8%. The median monthly mortgage repayment is $1,733.

Flagstaff Hill is served by 2 schools, including 2 primary. The average ICSEA score is 1070, which is above the national average of 1,000. Public transport access includes 40 bus stops. The crime rate in the Onkaparinga LGA is low at 933 incidents per 100,000 population.

On the investment side, Flagstaff Hill shows a gross rental yield of approximately 2.8%, rated as low yield. Property prices are near the state median ($1.1M/$950K). The price-to-income ratio of 10.0x is considered stretched. House prices have moved +7.0% year-on-year. Population growth of +0.9% year-on-year points to stable demand fundamentals. Building approvals have changed +0% year-on-year, indicating steady development activity.

Market & money
Investment signalsHeuristics
Rental Yield2.8% Low Yield
Price vs State$1.1M/$950K· Near Median
Affordability10.0x Stretched
Price Momentum+7.0% Rising
Pop. Growth+0.9%· Stable
Development+0%· Steady
InvestmentSA
Mortgage · mth$1,733
Rent · wk(Census)$385
Market rent · wk(Q1 2026)$575
Gross yield1.8%
Price / income10.0x
Population growth · Onkaparinga LGAABS ERP
Population (2025)184,827
5-year growth+1.1% CAGR
YoY change+0.9%
20012025
Development · Onkaparinga LGAABS Approvals
Approvals (2026)892
Houses574
Units319
YoY change+0%
Employment · Onkaparinga LGASALM
Unemployment (Dec-25)4.4%
YoY change-0.7pp
Dec-10Dec-25
Property investors · Postcode 5159ATO
Negatively geared1,172 (5.5% of filers)
Avg rental loss$5,446/yr
Landlords (rental income)2,516
Reported capital gains1,744
People & prosperity
DemographicsCensus 21
Population10,184
Median age43
Household size2.7
HH income · wk$2,080
Personal income · wk$844
Persons / bedroom0.8
IncomeATO 22-23
Median income$60,397
Mean income$71,397
Earners7,464
YoY change+4%
SEIFA indexABS
Advantage (IRSAD)9/10
Education (IEO)8/10
Economic (IER)8/10
Disadvantage (IRSD)9/10
Area & amenity
Local amenitiesOSM
Supermarkets1
Pharmacies1
GP / clinics1
Fuel stations0
Cafes & dining1
TransportGTFS
Bus stops40
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Current status
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Sources & freshness
Strong evidence

Flagstaff Hill carries enough direct local evidence for a first-pass decision.

QuickProperty mixes release files, Census baselines, and matched local services on this page. Read the status panel before treating every metric as equally fresh.

PRICE POSTURE
Prices come from release-based suburb series.

Official quarterly house sales workbooks; units remain on ABS fallback coverage

RENT POSTURE
Rent is using a state market dataset when available.

Use current rent as a starting signal, not as a fixed underwriting truth.

SERVICE POSTURE
Service coverage is matched locally, not inferred nationally.

Schools, transport, and hospitals are useful as presence signals, but they still have different source cadences.

Data status
Property prices
SA metropolitan median house sales · 2026-Q1 · Official quarterly house sales workbooks; units remain on ABS fallback coverage
stable source · automated · every update · quarterly
Available
Market rent
SA Housing Authority / CBS · Q1 2026 · State market dataset
medium stability · automated · every update · quarterly
Available
Crime
State crime dataset · 2024-25 · Area-level release dataset
Available
Schools
ACARA 2025 · 2 schools matched
stable source · automated · every update · annual
Available
Hospitals
AIHW · No linked local hospital coverage
medium stability · manual file · snapshot · mixed
Missing
Transport
GTFS feeds · 40 matched stops/stations
medium stability · manual file · snapshot · mixed
Available
Population growth
ABS ERP · 2025 · Annual estimate series
stable source · automated · every update · annual
Available
Building approvals
ABS Building Approvals · 2026 · Annual release series
stable source · automated · every update · monthly
Available
Available means a direct local dataset is linked. Verify means coverage exists but freshness or precision is weaker, such as ABS price fallback, Census rent fallback, or low-confidence hospital matching.

Flagstaff Hill FAQ

Common questions
  1. What LGA is Flagstaff Hill in?

    Flagstaff Hill is in the Onkaparinga Local Government Area, SA, postcode 5159. Council-level context for Onkaparinga LGA (suburb mix, population, rent, and price coverage) is available on the QuickProperty LGA page.

  2. What is the median house price in Flagstaff Hill?

    The current median house price in Flagstaff Hill, SA is $1.1M, based on the latest available sales data from state Valuers General offices and ABS Data by Region.

  3. What is the typical weekly rent in Flagstaff Hill?

    The median weekly rent in Flagstaff Hill is $575/wk, based on the current market rent dataset. The current rent signal is income-stretched rent market.

  4. What does the rent signal say about Flagstaff Hill?

    Income-stretched rent market: Weekly rent screens at about 50% of annual income. Use this as a suburb screening signal before comparing candidates or modelling a purchase; the matching rent ranking can provide broader market context.

  5. Is Flagstaff Hill a good investment?

    QuickProperty's investment signals for Flagstaff Hill show: Low Yield, Near Median, Stretched. These are computed from price, rent, income, and population data — not an opaque score.

  6. Where does QuickProperty get its data for Flagstaff Hill?

    Property prices come from state Valuers General offices and ABS Data by Region. Demographics are from ABS Census 2021. School ICSEA scores are from ACARA. Crime statistics are from state police agencies. Transport data is sourced from GTFS feeds.

  7. How often is the Flagstaff Hill data updated?

    Property prices update quarterly. RBA macro indicators update with each deploy. Demographics are from Census 2021. School ICSEA scores are from ACARA 2025.