City of Onkaparinga
O'Sullivan Beach
O'Sullivan Beach at a glance
Median house
$780,000
+9.7% year on year
Median unit
$190,080
Sales data pending
Days on market
–
Average to sell
Walk score
8
Very car dependent
Population
1,844
Median age 44
About
Welcome to O'Sullivan Beach.
O'Sullivan Beach is a suburb in Australia.
Side by side
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Median, growth, schools, walkability, all in one view.
Market
The price of a home here.
Median house price
$780,000
+9.7% over the past year. Median unit price $190,080.
Sales data as of May 2026· sales-sa
Rental and ownership
Weekly rent (house)
$300/wk
Weekly rent (unit)
$300/wk
Owner occupied
68%
Renter occupied
29%
At a deeper level
$780,000
+9.7% annual growth
$190,080
Sales data pending
–
Average days to sell
1,844
Median age: 44
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For investors
Investment overview.
Gross Yield (House)
Source: data.sa.gov.au · May 20262.00%
Based on $780,000 median
Gross Yield (Unit)
Source: data.sa.gov.au · May 20268.21%
Based on $190,080 median
Annual Growth (House)
Source: data.sa.gov.au · May 2026+9.7%
Year-on-year capital growth
Annual Growth (Unit)
Source: data.sa.gov.au · May 2026–
Year-on-year capital growth
Owner Occupancy
Source: ABS Census 2021 · May 202668%
Higher = more owner-occupier demand
Days on Market
Source: data.sa.gov.au · May 2026–
Lower = higher buyer demand
Gross rental yield is annual rent divided by purchase price, before expenses. It does not account for vacancy rates, management fees, maintenance, or financing costs. Use this as a starting point for further research.
5-year trajectory
at +9.7%/yr
2021
$491K
5-year change
+59%
2026
$780K
Trajectory derived from the current median compounded at the suburb’s annual growth rate, not raw sale-by-sale history.
Who lives here
Demographics.
Population
1,844
Median age
44
Family households
62%
Lone person
33%
Demographics data as of May 2026· ABS 2021 Census
Safety
Crime and safety.
59
total offences in 2025-26
Top offence categories
Crime statistics are reported at LGA level and may cover a broader area than this suburb.
Source: State Police Open Data
Crime data as of June 2026· State Police Open Data
Getting around
Walkability.
8
0
55
Scores calculated from OpenStreetMap data (ODbL)
Walkability data as of May 2026· OpenStreetMap
Place
Location.
Amenities
Transport
Education
Schools in O'Sullivan Beach.
Local schools for O'Sullivan Beach
View the catchment for each school to find out more.
Government School Catchment
O'Sullivan Beach Primary School
Christies Beach Primary School
Christie Downs Primary School
© ACARA, licensed under CC BY 4.0.
Climate
Weather year-round.
Annual Rainfall
448 mm
Hottest Month (avg max)
28.0°C
Coldest Month (avg min)
7.0°C
Monthly Rainfall (mm)
Weather data from BOM station Adelaide (Kent Town) (11 km away)
Climate data as of May 2026· Bureau of Meteorology
Frequently asked
About O'Sullivan Beach.
- What is the median house price in O'Sullivan Beach?
- The median house price in O'Sullivan Beach, SA 5166 is $780,000. The median unit price is $190,080. Annual growth is +9.7%.
- What is the O'Sullivan Beach postcode?
- O'Sullivan Beach is in the 5166 postcode, in SA, in the City of Onkaparinga region.
- What is the average rent in O'Sullivan Beach?
- The median weekly rent for houses is $300, for units it's $300.
- What schools are in O'Sullivan Beach?
- There are 20 schools serving O'Sullivan Beach on this page, including Southern Montessori School, O'Sullivan Beach Primary School, St John The Apostle Parish School.
- How walkable is O'Sullivan Beach?
- O'Sullivan Beach has a Walk Score of 8 out of 100, highly car-dependent. transit score 0, bike score 55.
- What suburbs are near O'Sullivan Beach?
- O'Sullivan Beach is close to Christies Beach, Christies Beach North, Port Stanvac, Christie Downs, Lonsdale.
- What is the population of O'Sullivan Beach?
- O'Sullivan Beach has approximately 1,844 residents. The median age is 44.
For Sale
For Rent
O'Sullivan Beach
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Side by side
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Sources cited
Median, growth and rental data from state revenue offices and ABS. Census from ABS 2021. Climate from BoM. Hazard from Geoscience Australia. School data from ACARA. Crime from state police open data. Full methodology →
Always dated
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