Median price trend for houses
Based on 47 sales in the preceding 12 months
$818,000
Up 13.3% over 12 months
- 2 bed
- $731k
- 3 bed
- $795k
- 4 bed
- $1.03m
Aerial view
Imagery © Esri
The quick read on
O'Sullivan Beach
SA 5166 · Onkaparinga
What homes cost, how rents have moved, and a feel for the people who call it home.
- Median house
- $818,000
- Population
- 1,844
- Postcode
- 5166
latest suburb median
ABS 2021
O'Sullivan Beach, South Australia
Property market insights for O'Sullivan Beach
Median sale price and rental income of properties in O'Sullivan Beach SA
Median rent trend for houses
Based on 44 rental listings in the preceding 12 months
$575 per week
Up 4.5% over 12 months
Market data updated October 2026.
The median house price in O'Sullivan Beach, SA is currently $818,000, based on the latest 12 months of sales. O'Sullivan Beach has a 12-month growth rate of 13.3% for houses.
Two-bedroom houses have a median sale price of $731,000, Three-bedroom houses have a median sale price of $795,000, Four-bedroom houses have a median sale price of $1,030,000 in O'Sullivan Beach.
If you're looking to lease, the median rent for houses in O'Sullivan Beach is $575 per week. The median house rent has increased 4.5% over the last 12 months.
The median rent for units and apartments in O'Sullivan Beach is $400 per week and has remained unchanged over the last 12 months.
Crime and safety
Is O'Sullivan Beach safe?
The overall rate for O'Sullivan Beach is 1,906 offences per 100,000 residents — 49% below the Greater Adelaide benchmark.
That is the clearest suburb-wide answer. Open the detailed profile to see how the pattern changes across offence types and different parts of O'Sullivan Beach.
Overall crime rate
1,906
offences per 100,000 residents
49% belowGreater Adelaide
O'Sullivan BeachGreater Adelaide: 3,761
Suburb-wide estimate from Microburbs' public crime model; it is not an address-level measure.
The people behind the postcode
Who lives in O'Sullivan Beach?
O'Sullivan Beach SA 5166 is in South Australia, within Greater Adelaide.
1,844 people call O'Sullivan Beach home, with an average of 2.2 people per household and a median household income of $1,072 a week.
Public ABS 2021 Census figures. The bars compare the local share with the capital-region benchmark.
- Population
- 1,844
- Median age
- 44 years
- Median mortgage
- $1,200 / month
- 2021 household rent
- $300 / week
Above the benchmarkBelow the benchmarkIn lineGreater Adelaide benchmark
Age profile
Share of residents in each age band.
Under 1514.9%Below
15–3422.9%Below
35–5425.3%Below
55–7426.7%Above
75 and over9.9%Above
Homes
Share of occupied private dwellings.
Separate houses93.3%Above
Townhouses6.5%Below
Apartments0.0%Below
Ownership
Share of homes with a stated ownership or rental status.
Owned outright34.4%Above
Paying a mortgage35.6%Below
Renting30.0%Above
Cars at home
Vehicles available to occupied households.
No car7.0%Below
One car43.4%Above
Two cars34.3%Below
Three or more16.0%Below
Getting to work
Selected ways residents worked or travelled on Census day.
Worked from home7.9%Below
Drove to work67.1%Above
Train, tram or bus2.6%Below
Walked or cycled1.1%Below
What stands out in O'Sullivan Beach
7.9% of workers in O'Sullivan Beach worked from home on Census day.
8.5% of O'Sullivan Beach residents were born in England.
59.9% of people in O'Sullivan Beach described themselves as having no religion in the 2021 Census.
A closer look at the Census
Questions people ask about O'Sullivan Beach
Open any question for a plain-English reading of the public 2021 Census for O'Sullivan Beach SA 5166.
Is O'Sullivan Beach family-friendly?Age, family structure and household size describe the community families would be joining.
14.9% of O'Sullivan Beach's residents were children under 15 in the 2021 Census. That is close to the Greater Adelaide average.
515 family households lived in O'Sullivan Beach; 31.3% were couple families and 26.4% were one-parent families.
31.7% of local families included children under 15. That is somewhat below the Greater Adelaide average.
These are suburb-wide household figures, not school or childcare ratings.
What is the age profile of O'Sullivan Beach?The balance between younger adults, families and older residents changes how a suburb feels day to day.
O'Sullivan Beach had 1,844 residents at the 2021 Census.
26.6% of residents were aged 25 to 44.
36.6% were 55 or older. That is somewhat above the Greater Adelaide average.
Age shares use the suburb’s total Census population.
What kind of homes are in O'Sullivan Beach?The dwelling mix shows whether the suburb is mostly detached homes, townhouses or apartments.
Separate houses made up 93.3% of occupied private dwellings in O'Sullivan Beach.
Townhouses and other attached homes represented 6.5% of occupied private dwellings.
Flats and apartments accounted for 0.0% of occupied private dwellings.
All three shares use occupied private dwellings as the denominator.
Do people own or rent in O'Sullivan Beach?Tenure shows how many households own outright, have a mortgage or rent.
34.4% of households with a stated tenure owned their home outright. That is close to the Greater Adelaide average.
35.6% were buying their home with a mortgage.
30.0% rented their home. That is close to the Greater Adelaide average.
Tenure shares include households that stated one of these three arrangements.
How large are households in O'Sullivan Beach?Household-size data shows the mix behind the suburb-wide average.
The average household in O'Sullivan Beach had 2.2 people.
One-person households made up 33.1% of occupied homes. That is somewhat above the Greater Adelaide average.
Two-person households represented 37.6%, while 13.1% had four or more usual residents.
Household size counts usual residents in occupied homes.
How do people get to work in O'Sullivan Beach?Census-day travel shows the balance between home, road, public transport and active travel.
7.9% of workers worked from home on Census day. That is close to the Greater Adelaide average.
67.1% drove a car as their only travel method. That is somewhat above the Greater Adelaide average.
2.6% used only a train, tram or bus, while 1.1% walked or cycled.
Travel figures are a 2021 Census-day snapshot.
How many cars do households have in O'Sullivan Beach?Vehicle availability helps describe the routines local households can support.
7.0% of occupied households had no motor vehicle available. That is close to the Greater Adelaide average.
One-car households formed 43.4% of the total.
50.3% of households had two or more vehicles.
Vehicle counts refer to occupied households, not individual residents.
Who's moving to O'Sullivan Beach, and who stays?Address history shows how settled or recently mobile residents were at the Census date.
65.2% were at the same address five years earlier, while 34.8% reported a different address.
19.1% of residents were born outside Australia. That is well below the Greater Adelaide average.
Mobility figures cover residents who answered the relevant Census question.
What languages are spoken in O'Sullivan Beach?Language at home gives a direct view of the community’s everyday linguistic mix.
90.7% of residents used only English at home.
4.7% used a language other than English at home.
0.0% spoke Mandarin at home, 0.2% spoke Cantonese and 0.4% spoke Hindi.
Home language is separate from English proficiency.
Where were O'Sullivan Beach residents born?Birthplace adds another layer to the local story, separate from ancestry and language.
19.1% of O'Sullivan Beach's population was born outside Australia, while roughly 80.9% was born in Australia.
0.5% of residents were born in China.
0.2% were born in India, while Australian citizenship across the whole suburb stood at 89.8%.
Birthplace, citizenship and ancestry describe different parts of identity.
What ancestries shape O'Sullivan Beach?Ancestry responses show how residents describe family and cultural background.
English ancestry accounted for 49.4% of ancestry responses in O'Sullivan Beach.
Australian ancestry made up 39.9% of responses.
Chinese ancestry represented 0.9% of responses.
People may nominate more than one ancestry, so these are shares of responses.
What work do people do in O'Sullivan Beach?Occupation describes a person’s role; industry describes the sector employing them.
10.9% of employed residents worked in professional occupations. That is about half the Greater Adelaide rate.
Managers accounted for 7.4% of employed residents, while clerical and administrative workers made up 11.0%.
Health care and social assistance employed 17.3% of workers, and education and training employed 5.8%.
Occupation and industry figures describe employed residents of the suburb.
How active is the workforce in O'Sullivan Beach?Participation, employment pattern and unemployment describe the resident labour force.
The labour-force participation rate was 52.2%, compared with 61.7% across Greater Adelaide.
26.4% of residents aged 15 and over worked full time, while 17.7% worked part time.
Unemployment was 9.2%, compared with 5.5% across Greater Adelaide.
Labour-force figures come from the 2021 Census.
What does the health profile of O'Sullivan Beach show?Selected long-term health conditions help describe community service needs.
47.6% reported no selected long-term health condition.
13.8% reported a long-term mental health condition, including depression or anxiety.
13.4% reported asthma, 15.0% arthritis and 8.0% diabetes excluding gestational diabetes.
These are self-reported suburb-wide Census figures, not address-level health risks.
How educated is O'Sullivan Beach?Qualifications describe the study pathways represented among local residents.
13.3% of people in the qualifications table held a bachelor degree. That is about half the Greater Adelaide rate.
Postgraduate degrees accounted for 3.0% of qualification responses.
Diploma-level qualifications represented 13.8%, while certificate-level qualifications represented 51.1%.
Qualification categories are reported separately and are not school ratings.
What do incomes and housing costs look like in O'Sullivan Beach?Census income and household payments give historical context for local living costs.
Median household income was $1,072 per week in the 2021 Census.
The median monthly mortgage repayment reported by local households was $1,200.
Occupied renting households reported a median rent of $300 per week.
These household figures are from 2021; current sale and asking-rent medians appear in the market section.
How does O'Sullivan Beach compare with Greater Adelaide?A few clear differences place the suburb in its wider metropolitan context.
Working from home was 7.9% in O'Sullivan Beach, compared with 9.8% across Greater Adelaide.
Outright ownership was 34.4% locally and 32.1% across Greater Adelaide. That is close to the Greater Adelaide average.
Renting accounted for 30.0% in O'Sullivan Beach, against 29.5% across Greater Adelaide.
Capital-region comparisons use the same Census definitions and year.
Three useful questions
A buyer’s quick guide to O'Sullivan Beach
Is O'Sullivan Beach expensive?
The median house price is $818,000. Bedroom count, land and condition still create a wide range around those suburb medians.
Is O'Sullivan Beach good for families?
The Census counted 515 local families, and 14.9% of residents were under 15. That describes the community; school quality, travel times and the right fit for a particular family need separate research.
What can I get for $1.5m in O'Sullivan Beach?
4-bedroom houses have a median around $1,030,000, the closest bedroom benchmark we hold to a $1.5m budget. Individual homes can differ substantially with block size, renovation and location.
Medians describe recorded market activity across the suburb; they are historical context, not a valuation or forecast for an individual home.
Explore the area
Streets and suburbs around O'Sullivan Beach
43 streets in O'Sullivan Beach
Street-by-street reports are not published yet. The streets below are the ones this suburb covers.
- Anembo St
- Baden Terrace
- Bagshaw Rd
- Borraga St
- Catlin Ct
- Cutmore St
- Francis St
- Galloway Rd
- Gayundah Cr
- George St
- Gumeracha Rd
- Gympie St
- Higgins Street
- Hill St
- Hunter Road
- John Tce
- Kurandah St
- Mallow Ct
Show all 43 streetsShow fewer streets
- Mallow St
- Marine Dr
- Mentone Pde
- Moorong Rd
- Morrow Rd
- Norongo St
- Pearce St
- Pioneer Ave
- Protector St
- Roopena St
- Selway Tce
- Sullivan Terrace
- Sunset Ct
- Swordsman Rd
- Taralga Rd
- Tara St
- Tattoo St
- Tingira Dr
- Tooma St
- Uranna St
- Wakelin Tce
- Woocalla St
- Wyong Rd
- Yangara Rd
- Yenda St
12 suburbs surrounding O'Sullivan Beach
Compare nearby suburb prices, rents and five-year market trends.
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Use the finders to compare places and properties, or open the full report when you need the street, risk, schools and growth research.
Read the thinking
Figures update as new market and census data arrives. This suburb overview is general information, not a valuation or financial advice.