Suburb profile · ABS Census 2021
O'Sullivan Beach suburb profile
O'Sullivan Beach, SA · Postcode 5166
This O'Sullivan Beach suburb profile summarises official Australian Bureau of Statistics Census 2021 data for O'Sullivan Beach, SA (postcode 5166). Use it as a free suburb report covering population, median rent, household income, age, housing tenure and employment, plus how those figures changed since Census 2016— then compare O'Sullivan Beach with nearby suburbs.
O'Sullivan Beach at a glance
Population
1,844
Median rent
$300/wk
Household income
$1,072/wk
Median age
44
O'Sullivan Beach trends (2016 → 2021)
Change since the previous Census. Historical figures are mapped from State Suburbs (SSC) to today's suburb boundaries.
Population
Census 2011 → 2016 → 2021
-4.7% over 10 years
Population
1,844
was 1,879 in 2016
-35 · -1.9%
Median rent
$300/wk
was $275/wk in 2016
+$25 · +9.1%
Household income
$1,072/wk
was $891/wk in 2016
+$181 · +20.3%
Median age
44
was 43 in 2016
+1 · +2.3%
Dig deeper: O'Sullivan Beach population growth · O'Sullivan Beach then and now
O'Sullivan Beach vs nearby & Greater Adelaide
Median Census 2021 figures for O'Sullivan Beach, nearby suburbs (8), and the Adelaide metro median (suburbs with 1,000+ people).
Rent
-8% vs area
- O'Sullivan Beach$300/wk
- Nearby$319/wk
- Adelaide$326/wk
Household income
-33.3% vs area
- O'Sullivan Beach$1,072/wk
- Nearby$1,427/wk
- Adelaide$1,607/wk
Median age
+10% vs area
- O'Sullivan Beach44
- Nearby39
- Adelaide40
Personal income
-25% vs area
- O'Sullivan Beach$599/wk
- Nearby$706.5/wk
- Adelaide$799/wk
Nearby uses the same postcode first, then larger suburbs in SA. See Adelaide rankings.
Socio-economic profile
How O'Sullivan Beach compares to other Australian suburbs on income, education and occupation — from official ABS SEIFA 2021 data.
O'Sullivan Beach ranks among Australia's most disadvantaged suburbs. It shows limited economic resources and lower education and occupation levels.
Relative disadvantage (IRSD)
Decile 1908.4
Lower score / decile = more relative disadvantage
Advantage & disadvantage (IRSAD)
Decile 1874
Higher score / decile = more relative advantage
Economic resources (IER)
Decile 1912.2
Access to economic resources (income, housing)
Education & occupation (IEO)
Decile 1870.6
Education and occupational skill levels
Source: ABS SEIFA 2021. See methodology.
O'Sullivan Beach on the map
OpenStreetMap outline for O'Sullivan Beach, SA.
Map data © OpenStreetMap contributors. Boundary matching is approximate.
O'Sullivan Beach people
- Population
- 1,844
- Median age
- 44
- Born overseas
- 19.1%
- Average household size
- 2.2
Total usual residents (Census 2021)
Median age of residents in years
Percentage born outside Australia
Average number of people per household
O'Sullivan Beach income
- Median household income
- $1,072/wk
- Median personal income
- $599/wk
Median total weekly household income
Median total weekly personal income
O'Sullivan Beach housing
- Median rent
- $300/wk
- Median mortgage repayment
- $1,200/mo
- Separate houses
- 84.2%
- Flats & apartments
- 0%
- Owned outright
- 30.2%
- Mortgaged
- 31.3%
- Rented
- 26.4%
- Unoccupied dwellings
- 9.7%
Median weekly rent for rented dwellings
Median monthly mortgage repayment
Percentage of dwellings that are separate houses
Percentage of dwellings that are flats or apartments
Percentage of dwellings owned without a mortgage
Percentage of dwellings with a mortgage
Percentage of dwellings rented
Percentage of private dwellings unoccupied on Census night
O'Sullivan Beach work
- Employment to population
- 47.4%
- Unemployment rate
- 8.9%
- Year 12 or above
- 38.6%
Employed persons as a percentage of population aged 15+
Unemployed persons as a percentage of the labour force
Percentage with Year 12 or equivalent as highest school level
Nearby suburb profiles (near 5166)
Compare O'Sullivan Beach with nearby suburbs
O'Sullivan Beach in numbers
O'Sullivan Beach had 1,844 residents at the 2021 Census, making it the 312th most populous suburb or locality in SA out of 1,624. The median age is 44, 5% above the typical SA suburb. The average household has 2.2 people. 19.1% of residents were born overseas.
Among occupied homes, 30.2% own their home outright, 31.3% are paying a mortgage, 26.4% rent. Separate houses make up 84.2% of dwellings, with 0% in flats or apartments. Median rent was $300/wk, 3% below the typical SA suburb.
Median household income was $1,072/wk, 30% below the typical SA suburb. The unemployment rate on Census night was 8.9%. 38.6% of adults had completed Year 12 or above. On the ABS SEIFA index of relative socio-economic disadvantage it sits in decile 1 nationally (1 is most disadvantaged, 10 least).
Between the 2016 and 2021 Censuses the population fell 1.9% (from 1,879 to 1,844). Median rent moved from $275/wk to $300/wk (+9.1%).
O'Sullivan Beach suburb FAQs
- What is the median rent in O'Sullivan Beach, SA?
- The median weekly rent in O'Sullivan Beach was $300/wk at the 2021 Census (ABS).
- How many people live in O'Sullivan Beach, SA?
- O'Sullivan Beach had 1,844 residents at the 2021 Census, down 1.9% from 2016.
- What is the median household income in O'Sullivan Beach?
- Median household income in O'Sullivan Beach was $1,072/wk at the 2021 Census.
- Do most people rent or own in O'Sullivan Beach?
- 26.4% of occupied homes in O'Sullivan Beach were rented, 30.2% were owned outright and 31.3% were owned with a mortgage.
About this O'Sullivan Beach suburb profile
Figures are from the ABS Census of Population and Housing 2021 (General Community Profile) for the Suburbs and Localities boundary matching O'Sullivan Beach. Where shown, 2016 values come from the 2016 State Suburbs (SSC) profile, linked via ABS geographic correspondence — boundaries are not always identical. Medians may be suppressed for very small areas. This is not financial or relocation advice — use it alongside current market data.
Source: ABS Census 2021. Methodology · Richest suburbs in Adelaide