O'Sullivan Beach

Suburb (SAL)

Greater Adelaide / Onkaparinga

 
 
 
 
 
 
 
Data Sources ABSValuer GeneralRental BoardACARA Newest Aug 2026 · Refreshed ABS QuickStats SAL41062 How we calculate this
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Suburb (SAL) Boundary Analysis

This analysis uses Suburbs and Localities (SAL) boundaries, which can materially differ from Statistical Areas (SA2) even when sharing the same name.

SAL boundaries are defined by Australia Post and the Australian Bureau of Statistics to represent commonly-known suburb names used in postal addresses.

Statistical Areas (SA2) are designed for census data collection and may combine multiple suburbs or use different geographic boundaries. For comprehensive analysis, consider reviewing both boundary types if available.

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Sales ActivityProperty Sales Trends in O'Sullivan Beach

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DemographicsPopulation Growth in O'Sullivan Beach

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O'Sullivan Beach has an estimated 2,047 residents, up from 1,844 at the 2021 Census — a change of 203 people, or 11.0%. Growth has averaged 1.7% a year over five years. Interstate and internal migration accounts for 71.0% of that increase. That puts 1,101 residents on each square kilometre. Population is estimated from ABS Estimated Resident Population releases and GNAF address data, re-based from the 2021 Census and updated annually.

Detail

According to investigations of ABS population statistics for the surrounding region, combined with fresh addresses verified by AreaSearch since the Census, the suburb of O'Sullivan Beach has an estimated population of 2,047 in May 2026. This indicates a growth of 203 residents (11.0%) from the 2021 Census, when the recorded population stood at 1,844 individuals. The estimate is calculated from a resident population of 2,037, calculated by AreaSearch using the latest ERP data release from the ABS (June 2025) along with 13 validated new addresses registered since the Census date.

This population level represents a density of 1,100 persons per square kilometer, a figure that is generally consistent with the typical averages observed in locations evaluated by AreaSearch. The 11.0% growth rate in the suburb of O'Sullivan Beach since the 2021 census was higher than that of the SA3 area (5.8%), as well as the SA4 region, establishing the locality as a regional leader in population gains. The expansion of the local population was mostly fueled by interstate migration, which accounted for approximately 71.0% of the total population growth over recent periods. AreaSearch utilizes ABS/Geoscience Australia projections for each SA2 location, published in 2024 using 2022 as the base year. For any SA2 regions lacking this coverage, and for the years after 2032, regional and LGA projections by age bracket from the SA State Government, published in 2023 and utilizing 2021 data, are utilized with adjustments applied via weighted aggregation of population growth from the LGA to the SA2 level. Looking at future demographic outlooks, the suburb of O'Sullivan Beach is anticipated to experience population growth slightly below the median of statistical areas nationwide, with the population projected to expand by 220 residents by 2041 based on aggregated SA2-level forecasts, representing a rise of 10.3% over the 16 years.

Frequently Asked Questions - Population

What is the latest population estimate for the suburb of O'Sullivan Beach?
Total population for the suburb of O'Sullivan Beach was estimated to be approximately 2,047 as at May 26. This is based upon an estimated resident population of 2,037 from the ABS up to June 2025.
How has the population in the suburb of O'Sullivan Beach changed since 2021?
The suburb of o'sullivan beach has added approximately 203 people and shown a 11.01% increase from the 1,844 people recorded at the 2021 Census period.
What is the population density in the suburb of O'Sullivan Beach?
The population density in the suburb of O'Sullivan Beach is estimated at 1,100 persons per square kilometer based on the latest population estimate.
How much has the population grown over the past 10 years in the suburb of O'Sullivan Beach?
Over the past 10 years, the population in the suburb of O'Sullivan Beach has shown a compound annual growth rate of 0.6% per annum.
What are the main drivers of population growth in the suburb of O'Sullivan Beach?
Population growth in the suburb of O'Sullivan Beach is driven by: Interstate migration (71.0%), Overseas migration (29.0%), Natural increase (0.0%). The primary driver is Interstate migration, contributing 71.0% of overall population gains.

Residential SupplyHousing Development & Building Approvals in O'Sullivan Beach

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89 new dwellings have been approved in O'Sullivan Beach over the past five years, an average of 17 a year. That places the area in the 60th percentile for residential development activity nationally, about 8 approvals per 1,000 residents a year. Of the 20 dwellings approved in the latest reporting year, 70% were detached houses and the rest townhouses or apartments. Approvals are currently running at an annualised 68, running ahead of that longer-run average. Figures come from ABS building approvals aggregated to this Suburb (SAL) boundary and are updated monthly as the ABS releases them.

Detail

Analysis by AreaSearch of ABS building approval statistics, distributed from regional data, shows that about 17 new residential dwellings have been approved annually in O'Sullivan Beach, accumulating to an estimated 89 homes over the previous 5 financial years. In the current financial year of FY-26, 63 approvals have been logged. Considering that an average of 1.8 new occupants per year have moved in per constructed home over the past 5 financial years (from FY-21 to FY-25), local demand matches supply well, supporting a balanced market environment. Meanwhile, new structures are being built with an average value of $350,000, which is slightly above regional averages and points to a focus on quality builds.

Additionally, commercial approvals worth $3.2 million have been registered during this financial year, highlighting that the area is primarily used for residential purposes. O'Sullivan Beach exhibits 89.0% more residential construction activity per capita than Greater Adelaide, offering prospective buyers plenty of options. The latest residential construction is made up of 70.0% standalone houses and 30.0% medium and high-density dwellings, showing a rising proportion of attached building options that provide variety across different price brackets, from large homes for families to more affordable compact formats. This represents a clear shift from the current housing stock (which is 94.0% houses), indicating a decline in the availability of vacant developable land while meeting changing lifestyle choices and needs for affordable housing. The ratio of residents to dwelling approvals stands at approximately 115 people per approval, pointing to a growing market. Projecting forward, O'Sullivan Beach is expected to add 210 residents by 2041, starting from the most recent quarterly estimate by AreaSearch. If building activity remains at its current pace, the supply of housing should easily satisfy demand, creating positive conditions for buyers and potentially allowing growth to outpace current projections.

Frequently Asked Questions - Development

How many dwelling approvals have occurred in the suburb of O'Sullivan Beach recently?
Dwelling approval activity in the the suburb of O'Sullivan Beach area has seen 35 residential approvals over the past two financial years, based on AreaSearch's SA2 aggregation method. The suburb of O'Sullivan Beach's current population of 2,047 has been supported by 17 approvals on average over recent years.
How does the suburb of O'Sullivan Beach's development activity compare to the broader region?
The suburb of O'Sullivan Beach has seen 0.92 approvals per 100 people in recent years, compared to 0.74 approvals in the broader region. This means that one dwelling has been approved for every 115 people in the suburb of O'Sullivan Beach, compared to one for every 144 in the broader region.
Is the suburb of O'Sullivan Beach keeping up with housing demand?
With the population expected to increase by 210 people by 2041, around 105 new dwellings will be necessary. Recent approval levels appear more than sufficient to meet these forecasts, considering the census average of 2.0 persons per dwelling. This suggests that population growth may exceed trend projections in the coming years, supported by a robust housing supply.
What has been the trend in development approvals over the past five years in the suburb of O'Sullivan Beach?
Looking at development activity over the past five years, the suburb of O'Sullivan Beach's approval levels have been significantly above the yearly average of 17, indicating strong recent growth in development activity.
How many dwellings will be needed to accommodate future population growth in the suburb of O'Sullivan Beach?
The population in the suburb of O'Sullivan Beach is expected to grow by 210 people by 2041, necessitating approximately 105 new dwellings. This calculation is based on the current census average of 2.0 persons per dwelling in the area.
How does recent development compare to population growth in the suburb of O'Sullivan Beach?
Over the past five years, the population in the suburb of O'Sullivan Beach has grown by approximately 36 people, while 89 residential approvals were recorded. This equates to a ratio of 0.4 people added for each new dwelling approval. This low ratio indicates housing supply is outpacing population growth, potentially creating market oversupply.
Are there opportunities for residential developers in the suburb of O'Sullivan Beach?
With dwelling approval activity running at an average of 17 approvals per year and a population of 2,047, the market appears to be adequately supplied relative to projected housing demand in recent years, suggesting that developers should have a longer-term approach when considering new projects. With the population expected to increase by 210 people by 2041, around 105 new dwellings will be necessary. Recent approval levels appear more than sufficient to meet these forecasts, considering the census average of 2.0 persons per dwelling. This suggests that population growth may exceed trend projections in the coming years, supported by a robust housing supply.
Approvals Pipeline Development applications near O'Sullivan Beach

Development applications around O'Sullivan Beach

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SOURCE: Planning portals and council registers, compiled by AreaSearch. Distance & bearing measured from the suburb midpoint.

Project PipelineInfrastructure & Major Projects in O'Sullivan Beach

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AreaSearch tracks 19 current infrastructure and development projects close to O'Sullivan Beach, worth an estimated $1.27 billion. 2 are already under construction and 5 are due for completion within three years. The pipeline spans sports & recreation, residential development and retail. Records are compiled from Infrastructure Australia, state agencies, council planning portals and public announcements, reviewed and updated daily, then ranked by proximity, construction stage, completion horizon and project scale.

Detail

Changes to local infrastructure, key construction projects, and zoning plans can significantly affect a suburb's performance. AreaSearch has identified no projects that are expected to influence the local area. Key regional projects include the Port Stanvac Precinct, Noarlunga Residential Development, Noarlunga Master Planning Housing Project, and Sunset Residential Development, with the list below highlighting those most likely to be relevant.

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Frequently Asked Questions - Infrastructure

What are some of the major infrastructure and planning changes likely to influence the suburb of O'Sullivan Beach?
Key infrastructure and planning changes likely to influence the suburb of O'Sullivan Beach include: Port Stanvac Precinct (Planning); Noarlunga Residential Development (Construction); Noarlunga Master Planning Housing Project (Construction); Sunset Residential Development (Construction); and Onkaparinga Heights (Construction). These projects represent significant developments that will shape the area's future infrastructure landscape.
What types of infrastructure projects are impacting the suburb of O'Sullivan Beach?
Infrastructure development impacting the suburb of O'Sullivan Beach spans multiple sectors including Transport & Logistics, Communities, Precincts & Urban Renewal, and Residential Development, among others.
What is the scale of infrastructure investment impacting the suburb of O'Sullivan Beach?
Infrastructure investment analysis indicates substantial capital deployment exceeding $1.9 billion in projects that will impact the extended area.
How does the suburb of O'Sullivan Beach's infrastructure development compare to other areas?
Infrastructure development activity impacting the suburb of O'Sullivan Beach currently ranks below national averages at the 25thth percentile.
Noarlunga Hospital Mental Health Expansion
Category: Health & Medical
Stage: Approved | Est. Comp: 2027
Source / Links: Link 1   

$74M State Election commitment delivering new 24-bed Mental Health Rehabilitation Service and additional mental health facilities. Expanding critical healthcare services for southern Adelaide communities with specialized treatment capabilities.

Health & Medical

Colonnades Shopping Centre Ongoing Upgrades
Category: Retail
Stage: Planning | Est. Comp: 2025
Source / Links: Link 1   

Major regional shopping centre serving southern suburbs with ongoing upgrades and expansions. Key retail hub featuring department stores, supermarkets, specialty shops and dining options with improved facilities and customer amenities.

Retail

Noarlunga Master Planning Housing Project
Category: Communities
Stage: Construction | Est. Comp: 2031
Source / Links: Link 1   Link 2  

A 22-hectare master-planned residential development delivering more than 626 new homes across two land parcels on either side of Lovelock Drive in Port Noarlunga and Noarlunga Downs. The project features a minimum of 28% affordable and social housing (including 80 social housing dwellings), and 12.5% new public open space with a target of 25% overall tree canopy. Designed by Holmes Dyer, the development targets a 5-Star Green Star Communities rating. Civil works by Winslow Constructors commenced in 2025, with house construction planned to begin in 2026 and first residents expected by end of 2026.Multiple sales releases are underway including the Wirra and Kauwi Releases. The community will become home to approximately 1,200 residents over a 7-10 year delivery period through to 2031.

Communities

YAS Property Development - Morphett Vale Project
Category: Residential Development
Stage: Proposed | Est. Comp: 2026
Source / Links: Link 1   Link 2  

Proposed residential development in Morphett Vale featuring modern family homes with sustainable design principles. YAS Property & Development was founded in 2015 by Adelaide-based businessman and entrepreneur Tim Shahin. The company focuses largely on sub-divisions and unique housing developments and is one of the fastest-growing property development companies in South Australia.

Residential Development

Burlington Land Division
Category: Residential Development
Stage: Under Assessment | Est. Comp: 2025
Source / Links: Link 1   Link 2  

Premium land development at the southern end of Hallett Cove, situated within 250m of the coast. These allotments link into the established Cove Point estate. Range of allotment sizes with near level terrain, appealing to first home owners, families and retirees.

Residential Development

Cove Point Residential Development
Category: Residential Development
Stage: Planning | Est. Comp: 2028
Source / Links: Link 1   Link 2  

Masterplanned coastal residential estate at Hallett Cove by Adelaide Development Company. The project includes premium residential allotments, house and land packages, townhouses and public open space with coastal access. As of 2026 the project remains in the planning phase, with the broader Hallett Cove development area continuing through planning and land division processes.

Residential Development

Pavana Reserve Upgrade
Category: Sports & Recreation
Stage: Planning | Est. Comp: 2025
Source / Links: Link 1   Link 2  

Community park upgrade including new playground equipment, improved landscaping, walking paths, seating areas and lighting. Part of City of Marion's park improvement program to enhance recreational facilities for local families.

Sports & Recreation

Hallett Cove Seaside Pool
Category: Sports & Recreation
Stage: Planning | Est. Comp: 0
Source / Links: Link 1   Link 2  

Council-endorsed concept for a seawater-filled seaside pool integrated with coastal embankment protection at Hallett Cove, South Australia. Two options are under consideration: a 50m pool (costed at approximately $10.3 million) or a 25m pool (approximately $9 million), both featuring a 20m x 20m children's wading pool, stepped concrete benches, beach access paths and 90m of coastal erosion protection. Community consultation in 2023 indicated approximately 80% support for the 50m option. The project remains unfunded and is not in the City of Marion budget or four-year business plan.A state government funding partner is required before detailed design and approvals can proceed. The SA Liberal opposition had pledged $11 million toward the pool ahead of the March 2026 state election, however Labor was re-elected in a landslide, leaving the project without a confirmed funding commitment.

Sports & Recreation

Jobs & IndustryEmployment Trends in O'Sullivan Beach

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829 residents of O'Sullivan Beach are employed, from a labour force of 904. Unemployment sits at 8.3%, with participation at 52.2%. Weighted for its industry mix, the area's sectors are forecast to grow about 6.3% nationally over five years. That reflects industry composition only and makes no allowance for local population growth. The working-day population is estimated at 2,254, about 110% of the resident population, so the area draws in more workers than it sends out. Unemployment and labour force come from ABS Small Area Labour Markets, updated quarterly; the industry and occupation profile is from the 2021 Census.

Detail

O'Sullivan Beach features a diverse labor force that includes both office-based and manual workers, with solid representation in essential services, an unemployment rate of 8.3%, and a yearly employment growth rate estimated at 4.4% based on aggregated regional statistics compiled by AreaSearch. In March 2026829 local residents are employed, while the rate of unemployment is 4.5% higher than the Greater Adelaide figure of 3.8%, showing potential for growth. Furthermore, the workforce participation rate is considerably lower (52.2% compared to 66.6% in Greater Adelaide). According to Census data, a modest 9.0% of employed residents worked from home, though this figure may have been influenced by COVID-19 pandemic restrictions.

The local workforce is mainly employed in health care & social assistance, construction, and retail trade. The region shows a particularly high concentration of workers in construction, with employment levels in this sector sitting at 1.8 times the regional average. In contrast, the professional & technical sector is underrepresented, making up 3.6% of the workforce compared to the regional average of 7.3%. A ratio of 0.6 workers for every resident at the time of the Census indicates that local employment opportunities are above typical levels. Based on AreaSearch's evaluation of SALM and ABS statistics aggregated from the surrounding region, employment expanded by 4.4% over the 12-month period, while the labor force grew by 3.8%, leading to a decrease in the unemployment rate of 0.5 percentage points. By comparison, Greater Adelaide experienced employment growth of 4.2%, a labor force expansion of 4.0%, and a reduction in unemployment of 0.2 percentage points. National employment projections from May-25 by Jobs and Skills Australia provide further context on future demand trends in O'Sullivan Beach. These projections, looking at five and ten-year horizons, have been applied to the local workforce structure to model future growth. While national employment is projected to grow by 6.6% over five years and 13.7% over ten years, the expected growth rates vary considerably across different industries. Applying these sector-specific forecasts to the local employment distribution suggests that local jobs could increase by 6.3% over five years and 13.2% over ten years, though this is a basic weighted projection for illustration and does not account for local population changes.

Frequently Asked Questions - Employment

What is the employment situation in the suburb of O'Sullivan Beach?
As of March 2026, the suburb of O'Sullivan Beach has approximately 829 employed residents with an unemployment rate of 8.3%. The elevated unemployment rate suggests challenging labour market conditions. The area faces employment challenges compared to other regions nationally.
How does the suburb of O'Sullivan Beach's unemployment rate compare to the broader region?
As of March 2026, the unemployment rate in the suburb of O'Sullivan Beach stands at 8.3%, which is 4.5 percentage points above Greater Adelaide's rate of 3.8%. This higher unemployment rate may indicate local labour market challenges. For comparison, the national unemployment rate is 4.2%.
What are the major employment sectors in the suburb of O'Sullivan Beach?
The employment landscape in the suburb of O'Sullivan Beach is dominated by several key sectors. The largest employers are health care & social assistance (18.4% of employment), construction (15.3%), and retail trade (12.8%). Other significant employers include manufacturing and public administration & safety.
How has employment changed recently in the suburb of O'Sullivan Beach?
Over the past year to March 2026, the suburb of O'Sullivan Beach has experienced employment growth, with total employment increasing while the labour force increased. As a result, the unemployment rate has fall. By comparison, Greater Adelaide saw employment increased and its unemployment rate dropped.
What is the workforce participation rate in the suburb of O'Sullivan Beach?
The workforce participation rate in the suburb of O'Sullivan Beach is 52.2%, which represents the proportion of working-age residents who are either employed or actively seeking work. This moderate participation rate suggests some residents may face barriers to workforce entry. The local rate trailing the Greater Adelaide average of 66.6%, suggesting potential for increased workforce participation.
Which industries are over-represented in the suburb of O'Sullivan Beach's employment market?
The suburb of o'sullivan beach shows notable specialization in construction, which employs 15.3% of the local workforce compared to 8.7% regionally. This concentration suggests the area has developed competitive advantages in this sector. The area also shows above-average employment in 1 other sectors, contributing to a distinctive economic profile.
What are the employment growth prospects for the suburb of O'Sullivan Beach?
Based on Jobs and Skills Australia projections applied to the suburb of O'Sullivan Beach's industry mix, employment is expected to grow by 6.3% over the next five years and 13.2% over ten years. This compares to national growth expectations of 6.6% over five years. Steady growth is anticipated across multiple sectors, providing diverse employment opportunities.
How does the job market in the suburb of O'Sullivan Beach compare nationally?
The suburb of o'sullivan beach's employment market shows weaker performance compared to most areas nationally. This suggests the need for targeted economic development initiatives. Recent job advertisement trends show the broader employment region experienced 0.7% growth, ranking 11.0th out of 37 regions nationally.
What employment opportunities exist for skilled workers in the suburb of O'Sullivan Beach?
Skilled workers will find good opportunities in the suburb of O'Sullivan Beach, with skilled sectors accounting for 30.5% of employment. Key sectors for skilled workers include health care & social assistance (18.4%), education & training (6.1%), and professional & technical (3.6%). With projected employment growth of 6.3% over five years, demand for skilled workers is expected to remain strong.

EarningsHousehold Income in O'Sullivan Beach

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Median household income in O'Sullivan Beach is $1,072 a week (about $56,000 a year), with median personal income at $599 a week. ATO records put median taxable income at $43,761 a year against an average of $50,224. Household income is from the 2021 Census; taxable income is from ATO Taxation Statistics for the latest financial year available, indexed forward using the ABS Wage Price Index.

Detail

According to tax data from the ATO for the 2023 financial year aggregated by AreaSearch at the postcode level, taxpayers in the suburb of O'Sullivan Beach recorded a median income of $43,761 and an average income of $50,224. These figures are below the national benchmarks, and compare to median and average levels of $54,808 and $66,852 across Greater Adelaide, respectively. Adjusting for Wage Price Index growth of 10.17% since the 2023 financial year, current estimates would stand at approximately $48,211 for the median and $55,332 for the average as of March 2026.

Data from the 2021 Census shows that household, family, and individual incomes in O'Sullivan Beach all fall between the 5th and 11th percentiles nationwide. Income distribution figures show that 30.7% of the population (628 people) earn within the $800 - 1,499 range, which contrasts with the wider region where the $1,500 - 2,999 bracket is the most common at 31.8%. Financial strain from housing costs is high, with residents retaining only 82.4% of their income, placing the area in the 6th percentile.

Frequently Asked Questions - Income

What is the median taxable income in the suburb of O'Sullivan Beach?
Based on Wage Price Index adjustments to March 2026, the estimated median taxable income in the suburb of O'Sullivan Beach is approximately $48,211. The official ATO data from FY-23 recorded a median of $43,761.
What is the average taxable income in the suburb of O'Sullivan Beach?
Based on Wage Price Index adjustments to March 2026, the estimated average taxable income in the suburb of O'Sullivan Beach is approximately $55,332. The official ATO data from FY-23 recorded an average of $50,224.
How does the median taxable income in the suburb of O'Sullivan Beach compare to the region?
Based on Wage Price Index adjustments to March 2026, the estimated median taxable income in the suburb of O'Sullivan Beach is approximately $48,211 compared to $60,382 in Greater Adelaide. The official ATO data from FY-23 shows $43,761 and $54,808 respectively.
How does the average taxable income in the suburb of O'Sullivan Beach compare to the region?
Based on Wage Price Index adjustments to March 2026, the estimated average taxable income in the suburb of O'Sullivan Beach is approximately $55,332 compared to $73,651 in Greater Adelaide. The official ATO data from FY-23 shows $50,224 and $66,852 respectively.
What are the main income cohorts in the suburb of O'Sullivan Beach according to the 2021 Census?
As per the 2021 Census, the income bracket containing the largest proportion (~30.7% / 628 persons) of the suburb of O'Sullivan Beach's population is the $800 - 1,499 cohort.
How do the main income cohorts in the suburb of O'Sullivan Beach compare to the region?
The largest income cohort in the suburb of O'Sullivan Beach is the $800 - 1,499 group, representing about 30.7% of the population. In comparison, Greater Adelaide's largest income cohort is the $1,500 - 2,999 group, representing 31.8% of its population, according to the 2021 Census.
What is the median household income in the suburb of O'Sullivan Beach according to the 2021 Census?
The 2021 Census data indicates that the median household income in the suburb of O'Sullivan Beach is $1,072/wk.
What is the median family income in the suburb of O'Sullivan Beach according to the 2021 Census?
According to the 2021 Census, the median family income in the suburb of O'Sullivan Beach is $1,367/wk.
What is the median personal income in the suburb of O'Sullivan Beach according to the 2021 Census?
The 2021 Census shows that the median personal income in the suburb of O'Sullivan Beach is $599/wk.
How does the suburb of O'Sullivan Beach's income rank nationally?
According to AreaSearch's aggregation of the latest postcode level ATO data released for FY-23, the suburb of O'Sullivan Beach had a median income among taxpayers of $43,761 with the average level standing at $50,224. This is lower than average on a national basis and compares to levels of $54,808 and $66,852 across Greater Adelaide respectively. Based on Wage Price Index growth of 10.17% since FY-23, current estimates would be approximately $48,211 (median) and $55,332 (average) as of March 2026.
What is the disposable income in the suburb of O'Sullivan Beach?
The estimated disposable income in the suburb of O'Sullivan Beach is $3,830 per year according to AreaSearch analysis.
How does the suburb of O'Sullivan Beach's disposable income compare to the region?
The suburb of o'sullivan beach's disposable income is $3,830 compared to $5,698 for Greater Adelaide, based on AreaSearch analysis.

Housing StockHousing & Dwellings in O'Sullivan Beach

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O'Sullivan Beach had 816 occupied dwellings at the 2021 Census, 94% detached houses and 0% apartments. 36% are owned with a mortgage, 30% rented and 35% owned outright. At that Census the median rent was $300 a week and the median mortgage repayment $1,200 a month. Rent absorbs 28.0% of household income here and mortgage repayments 25.8%. Dwelling stock, tenure and housing costs are 2021 Census measures — the only source that counts dwellings at this boundary size.

Detail

The mix of housing types in O'Sullivan Beach at the time of the last Census was made up of 93.5% standalone houses and 6.5% other housing formats (including semi-detached properties, apartments, and alternative dwellings), compared to the Adelaide metro split of 75.2% houses and 24.9% other dwellings. The level of home ownership in O'Sullivan Beach was higher than the Adelaide metro average, standing at 34.5%, with the remaining properties being purchased with a mortgage (35.7%) or occupied by renters (29.8%). The median monthly mortgage payment in the area was significantly lower than the Adelaide metro average at $1,200, while the median weekly rent was recorded at $300, compared to $1,562 and $320 across the Adelaide metro area.

Looking at national figures, monthly mortgage repayments in O'Sullivan Beach are well below the Australian average of $1,863, and weekly rents are also much lower than the national median of $375.

Frequently Asked Questions - Housing

What percentage of homes are owned vs rented in the suburb of O'Sullivan Beach?
In the suburb of O'Sullivan Beach, 34.5% of homes are owned outright, 35.7% are owned with a mortgage, and 29.8% are rented.
What percentage of dwellings in the suburb of O'Sullivan Beach are houses?
According to the latest data, 93.5% of dwellings in the suburb of O'Sullivan Beach are houses.
What percentage of dwellings in the suburb of O'Sullivan Beach are apartments or units?
In the suburb of O'Sullivan Beach, 0.0% of dwellings are apartments or units, with an additional 6.5% being semi-detached dwellings.
What is the level of outright home ownership in the suburb of O'Sullivan Beach?
Outright home ownership in the suburb of O'Sullivan Beach stands at 34.5%, compared to 32.1% in Greater Adelaide.
What is the median monthly mortgage repayment in the suburb of O'Sullivan Beach?
The median monthly mortgage repayment in the suburb of O'Sullivan Beach is $1,200, compared to $1,562 in Greater Adelaide.
What is the median weekly rent in the suburb of O'Sullivan Beach?
The median weekly rent in the suburb of O'Sullivan Beach is $300, compared to $320 in Greater Adelaide.
What is the distribution of rental prices in the suburb of O'Sullivan Beach?
In the suburb of O'Sullivan Beach, 15.3% of rentals are $0-149/week, 69.8% are $150-349/week, 14.9% are $350-649/week, 0.0% are $650-949/week, and 0.0% are $950+/week.
What is the average monthly housing cost in the suburb of O'Sullivan Beach?
The aggregate monthly housing cost in the suburb of O'Sullivan Beach is $815, which represents the average monthly cost across all housing types.
What percentage of income do residents spend on housing in the suburb of O'Sullivan Beach?
In the suburb of O'Sullivan Beach, households with mortgages typically spend 25.8% of their income on mortgage repayments, while renters spend 28.0% of their income on rent.
How crowded are homes in the suburb of O'Sullivan Beach?
The average persons per bedroom ratio in the suburb of O'Sullivan Beach is 0.7, indicating the level of household density.
How does housing affordability in the suburb of O'Sullivan Beach compare to the region?
Housing affordability in the suburb of O'Sullivan Beach shows mortgage holders spending 25.8% of income on repayments (vs 23.3% regionally), while renters spend 28.0% of income on rent (vs 20.7% regionally).
What types of dwellings are most common in the suburb of O'Sullivan Beach?
The dwelling mix in the suburb of O'Sullivan Beach consists of 93.5% detached houses, 6.5% semi-detached dwellings, 0.0% apartments, and 0.0% other dwelling types.
What is the weighted average housing cost based on tenure mix in the suburb of O'Sullivan Beach?
Based on the area's tenure composition, the weighted average monthly housing cost is approximately $816. This accounts for outright owners paying no housing costs, mortgage holders paying $1,200/month, and renters paying $1,299/month.
How affordable is housing in the suburb of O'Sullivan Beach relative to local incomes?
Housing in O'Sullivan Beach consumes approximately 17.6% of median household income ($4,642 monthly), indicating costs are highly affordable. The generally accepted benchmark is that housing should not exceed 30% of household income.
How do proposed developments compare to existing housing types in the suburb of O'Sullivan Beach?
Recent development applications in O'Sullivan Beach show attached dwellings contributing 44% of approvals compared to 6% of existing stock, while detached houses represent 56% of applications versus 94% of current dwellings. This suggests increasing densification. Housing density growth is around the national average.

HouseholdsHousehold Composition in O'Sullivan Beach

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O'Sullivan Beach counted 816 households at the 2021 Census, an estimated 906 today, averaging 2.2 people each. 20% are couples with children, fewer than in 88% of areas nationally, against 26% couples without children. 33% of households are people living alone, and families average 1.7 children. Household and family composition is measured only by the Census, so these are 2021 figures.

Detail

Families represent the majority of local households at 62.3%, consisting of couples with children at 19.5%, couples without children at 25.6%, and single-parent homes at 16.1%. The remaining 37.7% of households are non-family living arrangements, which include single person households at 32.9% and group households at 4.6% of the total. The median household size of 2.2 residents is smaller than the average of 2.5 recorded across Greater Adelaide.

Frequently Asked Questions - Households

How many households are in the suburb of O'Sullivan Beach?
As of the 2021 Census, the suburb of O'Sullivan Beach had 816 households. Based on population growth patterns, this has grown by approximately 11.0% to an estimated 906 households today.
What is the typical household size?
The median household size in the suburb of O'Sullivan Beach is 2.2 people. This compares to 2.5 in Greater Adelaide and reflects the area's household composition mix.
What types of households are most common?
Family households dominate at 62.3% of all households. The remaining households consist of lone person households (32.9%), group households (4.6%), and other household types (0.0%).
How are families structured in the area?
Among the 508 family households, 19.5% are couples with children, 25.6% are couples without children at home, and 16.1% are single parent families. This mix shapes local demand for schools, family services, and housing types.
How does the suburb of O'Sullivan Beach compare to regional household patterns?
Compared to Greater Adelaide, the suburb of O'Sullivan Beach shows distinct household patterns. Lone person households are notably over-represented at 32.9% (versus 27.7% regionally). Conversely, family households are under-represented at 62.3% compared to the regional 68.6%. This higher proportion of single-person households drives demand for smaller dwellings and different community services.
What is the average family size?
Families in the suburb of O'Sullivan Beach have an average of 1.7 children, slightly above the Greater Adelaide average of 1.5. This influences local demand for child-related services and larger family homes.
What are the marriage patterns in the suburb of O'Sullivan Beach?
Marriage patterns reveal 36.9% of the adult population are currently married, while 39.6% have never married. This compares to 45.7% married and 36.4% never married across Greater Adelaide.
How significant are single-person households?
Single-person households represent 32.9% of all households in the suburb of O'Sullivan Beach, higher than the regional average of 27.7%. This affects demand for smaller dwellings and single-person accommodation.
Are shared living arrangements common?
Group households (unrelated people sharing) account for 4.6% of households, well below the Greater Adelaide average of 3.7%. This low rate suggests limited student or young professional shared accommodation.
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EducationSchools & Education in O'Sullivan Beach

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11.8% of adults in O'Sullivan Beach hold a university qualification, including 8.7% with a bachelor degree and 1.9% with postgraduate qualifications. A further 32.9% hold a vocational qualification. 2 schools serve the area, with 292 enrolment places and an average ICSEA of 1,013 against a national benchmark of 1,000. Qualifications come from the 2021 Census; school enrolments, ICSEA and results come from ACARA's current release.

Detail

The locality presents lower levels of academic qualification, with the rate of university degrees (11.8%) sitting significantly below the national average of 30.4%. This gap offers a clear opportunity for targeted educational support. Bachelor degrees are the most common higher education qualification at 8.7%, followed by postgraduate degrees (1.9%) and graduate diplomas (1.2%). Vocational and technical training is highly prevalent, with 41.9% of residents aged 15 and over holding a vocational qualification, consisting of advanced diplomas (9.0%) and certificate level credentials (32.9%). A significant portion of the population, amounting to 22.5%, is enrolled in formal education.

This group is composed of 9.1% in primary school, 6.1% in high school, and 3.0% enrolled in tertiary studies.

Frequently Asked Questions - Education

What percentage of people in the suburb of O'Sullivan Beach have university qualifications?
11.8% of people aged 15 and over in the suburb of O'Sullivan Beach have university qualifications, compared to 28.9% in the broader region.
What percentage of people in the suburb of O'Sullivan Beach have no formal qualifications?
46.2% of people aged 15 and over in the suburb of O'Sullivan Beach have no formal qualifications, compared to 39.0% regionally.
How does the suburb of O'Sullivan Beach's education level compare to national averages?
The suburb of o'sullivan beach ranks in the 29th percentile nationally for education based on AreaSearch's analysis of qualification and performance metrics.
What types of qualifications are most common in the suburb of O'Sullivan Beach?
The most common qualifications in the suburb of O'Sullivan Beach are: Certificate (32.9%), Advanced Diploma (9.0%), Bachelor Degree (8.7%).
What proportion of the suburb of O'Sullivan Beach's population is currently attending educational institutions?
22.5% of the population in the suburb of O'Sullivan Beach is currently engaged in formal education, with 9.1% in primary school, 6.1% in secondary school, 3.0% at university.
What is the ICSEA score for schools in the suburb of O'Sullivan Beach?
The average ICSEA (Index of Community Socio-Educational Advantage) score for schools in the suburb of O'Sullivan Beach is 1013, indicating average socio-educational advantage (national average is 1000).
How many schools are located within the suburb of O'Sullivan Beach?
There are 2 schools within the suburb of O'Sullivan Beach, with a combined enrollment of approximately 292 students.
What types of schools are available in the suburb of O'Sullivan Beach?
The suburb of o'sullivan beach includes 2 primary schools.

Schools Detail

AmenitiesServices & Amenities in O'Sullivan Beach

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Getting AroundTransport & Commuting in O'Sullivan Beach

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Public transport in O'Sullivan Beach reaches 16 stops on 2 routes, timetabled for about 260 services a week. The typical home sits about 210 m from its nearest stop. Households keep an average of 1.2 vehicles. Stop and service counts are built from operators' published GTFS timetables and refresh with each timetable release; vehicle ownership is from the 2021 Census.

Detail

An analysis of public transport reveals that there are 16 active transport stops located within O'Sullivan Beach, which consist of bus services. These stops are served by 2 separate routes, which combine to offer 264 weekly trips. Transport access is rated as good, with residents living an average of 205 meters from their nearest stop. Because this is a residential suburb, most workers commute out of the area; driving remains the primary mode of travel at 88%, with 6% using train services. Vehicle ownership stands at an average of 1.2 cars per household, which is below the wider regional average.

A relatively low 9.0% of residents work from home, based on 2021 Census data, which may reflect pandemic-related conditions. The average frequency of transport services is 37 trips per day across all routes, which translates to roughly 16 weekly trips for each individual stop.

Frequently Asked Questions - Transport

How many public transport stops are in O'Sullivan Beach?
There are 16 public transport stops within the suburb of O'Sullivan Beach.
How frequent are the transport services in O'Sullivan Beach?
the suburb of O'Sullivan Beach has 264 weekly trips across 2 routes, averaging 37 trips per day.
How far are residents from public transport in O'Sullivan Beach?
On average, residential properties are 205 meters from the nearest transport stop.

Transport Stops Detail

HealthcareHealth Services in O'Sullivan Beach

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54.7% of residents in O'Sullivan Beach report no long-term health condition, a less healthy profile than 90% of areas nationally. 7.6% need daily assistance with core activities, and 46.9% hold private health cover. The standardised death rate runs at 6.0 per 1,000 residents. Health conditions, assistance needs and insurance are 2021 Census measures; the death rate comes from current ABS releases.

Detail

Health statistics show considerable challenges for O'Sullivan Beach, based on an analysis by AreaSearch of local mortality rates and the prevalence of chronic health conditions, which are noticeable in both younger and older cohorts. The rate of private health insurance coverage is particularly low, standing at approximately 47% of the population (~960 residents). This is below the Greater Adelaide rate of 52.7% and the national benchmark of 55.7%. Arthritis and mental health conditions are the most prevalent health issues in the area, affecting 12.0% and 11.0% of the population, respectively.

Meanwhile, 54.7% of residents reported having no long-term medical conditions, compared to 67.9% across Greater Adelaide. The working-age cohort experiences significant health challenges, with higher rates of chronic illness. Residents aged 65 and over make up 24.0% of the population (491 people), which is higher than the 19.2% average across Greater Adelaide. Seniors in the area experience health challenges, with national rankings for senior health outcomes matching the trends seen in the general population.

Frequently Asked Questions - Health

How many people in the suburb of O'Sullivan Beach have private health insurance?
Around 46.9% of people in the suburb of O'Sullivan Beach are covered by private health insurance, which compares to 52.7% in the broader region of Greater Adelaide.
What percentage of the population requires ongoing medical assistance in the suburb of O'Sullivan Beach?
In the suburb of O'Sullivan Beach, 7.6% of the population is identified as requiring ongoing medical assistance. This figure is slightly different from the regional average, where 6.6% of people in Greater Adelaide require similar assistance.
How prevalent is asthma in the suburb of O'Sullivan Beach?
10.7% of people in the suburb of O'Sullivan Beach are diagnosed with asthma. In comparison, 7.7% of the population across Greater Adelaide is affected by asthma.
What percentage of people have diabetes in the suburb of O'Sullivan Beach?
Diabetes affects 6.4% of the the suburb of O'Sullivan Beach population, while in the surrounding region, 4.8% of people are diagnosed with diabetes.
What is the percentage of people with heart disease in the suburb of O'Sullivan Beach?
4.9% of people in the suburb of O'Sullivan Beach have heart disease. Across the region of Greater Adelaide, 3.8% of the population is affected by heart disease.
How does the suburb of O'Sullivan Beach compare to the region in terms of overall private health coverage?
In the suburb of O'Sullivan Beach, 46.9% of the population are estimated to have private health insurance. Comparatively, Greater Adelaide sees an estimated private health coverage rate of 52.7%.

Ancestry & LanguageCultural Diversity in O'Sullivan Beach

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O'Sullivan Beach is largely Australian-born, at 79.9% of residents, with 4.9% speaking a language other than English at home. The largest reported ancestries are English (35.5%) and Australian (28.7%). Ancestry, language and country of birth are counted only by the Census, so these are 2021 figures.

Detail

O'Sullivan Beach displays relatively low cultural diversity, with 79.9% of the local population born in Australia, 89.8% holding citizenship, and 95.1% speaking only English at home. The main religious affiliation is Christianity, followed by 33.0% of the population. The most distinct variance from regional averages is in the category of Other religions, which accounts for 0.8% of the local population compared to 1.8% in Greater Adelaide. Regarding parental country of birth, the three largest ancestry groups represented in O'Sullivan Beach are English at 35.5% (well above the regional average of 27.8%), Australian at 28.7% (well above the regional average of 22.8%), and Scottish at 6.8%.

There are also notable differences in other backgrounds, with German ancestry represented at 6.1% (compared to 5.1% across the region), Welsh at 0.7% (compared to 0.6% regionally), and South Australian at 0.5% (compared to 0.3% regionally).

Frequently Asked Questions - Diversity

What is the level of cultural diversity in the suburb of O'Sullivan Beach?
O'Sullivan Beach was found to be below average in terms of cultural diversity, with 79.9% of its population born in Australia, 89.8% being citizens, and 95.1% speaking English only at home.
What is the most common religion in the suburb of O'Sullivan Beach?
The main religion in O'Sullivan Beach was found to be Christianity, which makes up 33.0% of people in O'Sullivan Beach. However, the most apparent overrepresentation was in Other, which comprises 0.8% of the population, compared to 1.8% across Greater Adelaide.
What are the top countries of origin in the suburb of O'Sullivan Beach?
In terms of ancestry (country of birth of parents), the top three represented groups in O'Sullivan Beach are English, comprising 35.5% of the population, which is substantially higher than the regional average of 27.8%, Australian, comprising 28.7% of the population, which is substantially higher than the regional average of 22.8%, and Scottish, comprising 6.8% of the population. Additionally, there are notable divergences in the representation of certain other ethnic groups: German is notably overrepresented at 6.1% of O'Sullivan Beach (vs 5.1% regionally), Welsh at 0.7% (vs 0.6%) and South African at 0.5% (vs 0.3%).
How does the percentage of people born overseas compare to the regional average?
20.1% of the the suburb of O'Sullivan Beach population was born overseas, compared to 28.7% regionally.
What percentage of the the suburb of O'Sullivan Beach population speaks a language other than English at home?
4.9% of the population in the suburb of O'Sullivan Beach speaks a language other than English at home, compared to 22.2% in the wider region.
How many people in the suburb of O'Sullivan Beach identify as Australian Aboriginal?
2.9% of the the suburb of O'Sullivan Beach population identifies as Australian Aboriginal, compared to 1.2% in the region.
What is the citizenship status of the population in the suburb of O'Sullivan Beach?
89.8% of the the suburb of O'Sullivan Beach population holds citizenship, compared to 86.3% in the wider region.

Age StructureAge Profile of O'Sullivan Beach

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The median resident of O'Sullivan Beach is 44, older than 76% of areas nationally. 22.9% of residents are aged 15 to 34. Age cohorts are not raw Census counts: the Census split is re-based to the latest ABS population estimates and state projections.

Detail

The median age of 44 years in O'Sullivan Beach is significantly higher than Greater Adelaide's average of 39, and also sits well above the national median of 38. Compared to the wider Adelaide metropolitan average, the 65 - 74 age bracket is noticeably over-represented (making up 13.5% of the local population), while the 15 - 24 age bracket is under-represented (9.7%). Since the 2021 Census, the 35 to 44 age cohort has grown from 13.1% to 14.8% of the population. Conversely, the 45 to 54 cohort has decreased from 12.4% to 11.2%.

Demographic projections for 2041 point to shifts in the local age profile. The 45 to 54 age group is expected to experience growth, increasing by 41 people (18%) from 229 to 271. In contrast, the 0 to 4 group is projected to grow more slowly at 7%, adding 7 children.

Frequently Asked Questions - Age

What is the median age in the suburb of O'Sullivan Beach?
According to the latest data, the median age in the suburb of O'Sullivan Beach is 44 years.
How does the suburb of O'Sullivan Beach's median age compare to broader areas?
At 44 years, O'Sullivan Beach is 5 years older than the Greater Adelaide average (39 years) and 6 years older than the national average (38 years).
What age groups are over-represented in the suburb of O'Sullivan Beach?
The most over-represented age group in the suburb of O'Sullivan Beach compared to the Greater Adelaide region is the 65 - 74 group, making up 13.5% of the population.
What age groups are under-represented in the suburb of O'Sullivan Beach?
The most under-represented age group in the suburb of O'Sullivan Beach compared to the Greater Adelaide region is the 15 - 24 group, making up 9.7% of the population.
Are there age groups with notable population variances?
Yes, certain age groups in the suburb of O'Sullivan Beach show significant variance compared to the Greater Adelaide region. The most over-represented age group is 65-74 year-olds (13.5% vs 9.8%). The most under-represented age group is 85+ year-olds (1.5% vs 2.6%).
What is the percentage of children (0-14 years) in the suburb of O'Sullivan Beach?
The percentage of children aged 0-14 years in the suburb of O'Sullivan Beach is 15.8%.
What is the percentage of older people (65+ years) in the suburb of O'Sullivan Beach?
The percentage of people aged 65 and over in the suburb of O'Sullivan Beach is 24.0%.

Data & MethodBoundaries, Sources & Method for O'Sullivan Beach

Data currency Refreshed

9 of 14 data sections on this page were updated within the last 12 months — the newest current to Aug 2026.

Everything is aggregated to the Suburb (SAL) boundary shown above, on a 2021 Census baseline. Only 3 sections — housing, households and cultural diversity — still wait on the 2026 Census.

The ledger — source, cycle and currency by section

Section Source & update cycle Currency
Updated within the last 12 months 9 sections
Population ABS, GNAF, Geoscience Australia Annual (ABS ERP) May 2026 3 months ago headline measures · 2021 Census baseline
Re-based to the ABS Estimated Resident Population (June 2025 release) and updated with new dwellings from GNAF address data. Current to May 2026, with the 2021 Census supplying the small-area baseline.
Age profile ABS, Geoscience Australia, State governments Annual May 2026 3 months ago headline measures · 2021 Census baseline
Age cohorts are re-based to the latest ABS population estimates and state projections, current to May 2026. Each cohort is held as a Census baseline and a current estimate.
Development & approvals ABS, GNAF Monthly (ABS approvals) Jun 2026 2 months ago headline measures · May 2026 baseline
Property sales & rents Valuer General, Rental Board, ABS Weekly sales, quarterly rents Aug 2026 this month all 21 measures
Sales from the state Valuer General register, refreshed weekly, and rents from quarterly rental bond lodgements. Both are read live each time this page loads, current to Aug 2026.
Infrastructure projects Infrastructure Australia, Local governments Daily May 2026 3 months ago all 2 projects tracked here
Project pipeline maintained continuously from Infrastructure Australia, state agencies, local government and public announcements. Records are added and revised daily; this area was last updated May 2026.
Employment ABS, DEWR, JSA Quarterly (ABS SALM) Mar 2026 5 months ago headline measures · 2021 Census baseline
Unemployment and labour force from ABS Small Area Labour Markets, current to Mar 2026. The growth outlook applies Department of Employment (now Jobs and Skills Australia) forecasts for all 19 industry divisions to the local industry mix, so it measures sector composition rather than local expansion and makes no allowance for population growth. Job demand comes from the same agency via its Internet Vacancy Index; industry and occupation structure from the 2021 Census.
Education ABS, ACARA Annual (ACARA) Aug 2026 this month headline measures · 2021 Census baseline
Transport ABS, State Transport Departments Each timetable release Jul 2026 last month headline measures · 2021 Census baseline
Services & amenities Provider directories, ACECQA Continuous Jul 2026 last month all 14 measures
Annual and financial-year sources 2 sections
Income ABS, ATO Annual (ATO) FY 2023 3 years ago headline measures · 2021 Census baseline
ATO taxable income statistics for FY 2023, indexed forward using the Wage Price Index. Census household income provides the distribution detail.
Health ABS, ATO Annual 2024 2 years ago headline measures · 2021 Census baseline
Census-measured — next update: 2026 Census 3 sections No more current small-area source exists for these, so they are labelled as Census-measured rather than implied to be current.
Housing ABS 5-yearly (Census) 2021 Census next update 2026 all 30 measures
Households ABS 5-yearly (Census) 2021 Census next update 2026 all 18 measures
Cultural diversity ABS, Geoscience Australia 5-yearly (Census) 2021 Census next update 2026 all 44 measures

"Currency" is the most recent release feeding that section. Where the Census supplies the structural baseline underneath a current headline figure, the row says so.

How the numbers are built

Population

The Census provides the small-area baseline, aggregated from mesh blocks to this boundary. It is then re-based to the ABS Estimated Resident Population (June 2025 release), and new dwellings built since Census night are counted from address data — 13 validated new addresses here. The headline figure is therefore a current estimate for May 2026, not a 2021 count (1,844 at the 2021 Census → 2,047 now). Annual growth rates are compound (CAGR), not simple averages.

Age profile

Cohort shares are not raw Census counts. Every cohort is held as a pair — the Census baseline and a current estimate — and the split is re-based using ERP and state population projections, current to May 2026. Median age is the Census median plus modelled change since. Charts that show both are labelled "2021 Census vs Current Estimate".

Property sales

Sourced from the state valuation authority's sales register — current, not Census, and refreshed weekly. Medians are calculated from settled transactions in the period shown; periods with very low transaction counts are flagged or suppressed, because a handful of sales can move a median substantially.

Rents

Derived from state rental bond lodgement data, by dwelling type and bedroom count. Bonds are lodged at the start of a new tenancy, so this reflects new lettings, not the whole rented stock.

Development & infrastructure

Building approvals come from current ABS releases; development applications are collected from council and state planning portals; the infrastructure pipeline is compiled from Infrastructure Australia and local government sources. Applications are matched to this boundary by address or coordinates, so very recent lodgements may not yet appear.

Employment & income

Industry and occupation structure comes from the Census, but the headline labour-market indicators do not. Unemployment and labour force are derived from ABS Small Area Labour Markets (quarterly). The employment outlook applies Department of Employment forecasts for all 19 industry divisions to this area's own industry mix (the agency is now Jobs and Skills Australia), as does the Internet Vacancy Index used for job demand. Because it is weighted on industry composition alone, that outlook carries no allowance for local population growth — in fast-growing areas the real rise in local jobs will typically be higher. Income combines Census household income with ATO taxable-income statistics for FY 2023, indexed forward using the Wage Price Index.

Education, transport & amenities

School enrolments, ICSEA and performance come from ACARA's current release, not the Census. Public transport stops and service frequency are derived from GTFS timetable feeds published by state transport departments. Services and amenities are proximity and count scores built from provider directories, refreshed on their own cycle. The Census contributes only the travel-to-work and qualification measures.

Rankings and benchmarks. Where we rank this area, the comparison set is every area of the same boundary type — suburbs against suburbs, SA2s against SA2s. Benchmarks compare this area against its greater capital city region and the national figure for the same measure and period.

Limits worth knowing. Small areas carry larger error margins, and the ABS introduces small random adjustments to Census counts to protect confidentiality — so totals may not sum exactly. Estimates re-based from regional data describe the area's expected trajectory, not a direct count of it. Figures are indicative for research and are not financial, planning or valuation advice.

Cross-check us. The Census baseline for this boundary is at ABS 2021 Census QuickStats (SAL41062). QuickStats reports 2021 only — the figures on this page are more current wherever the ledger shows a later date.

Common questions about this page

How do O'Sullivan Beach suburb boundaries differ from Statistical Areas?
This page uses Suburbs and Localities (SAL) boundaries (suburb-style geography). SAL represents commonly-known suburb names used in addresses, while Statistical Areas (SA2) are designed for census/statistical reporting. Even when sharing the same name, SAL and SA2 boundaries often cover different geographic areas with different populations.
Where does the data on this O'Sullivan Beach page come from?
AreaSearch compiles this page from official and industry sources — including ABS, Geoscience Australia, Valuer General, Provider directories, DEWR, JSA, State Transport Departments and ACARA — then aggregates them to the boundary shown and calculates the rankings, growth rates and benchmarks itself. Property sales come from the state valuation authority, rents from state rental bond lodgements, development applications from council and state planning portals, school data from ACARA, and public transport from state transport departments.
Is the O'Sullivan Beach data on this page just from the 2021 Census?
No. Most of this page is maintained well beyond the Census. Sourced entirely from current releases: development & approvals (Jun 2026), property sales & rents (Aug 2026), infrastructure projects (May 2026) and services & amenities (Jul 2026). Built on a Census baseline but carrying newer measures on top: population (to May 2026), age profile (to May 2026), employment (to Mar 2026), income (to FY 2023), education (to Aug 2026), transport (to Jul 2026) and health (to 2024). Population and age cohorts in particular are re-based to the latest ABS Estimated Resident Population rather than left at 2021 counts. Only housing, households and cultural diversity remain wholly Census-based, because no more current small-area dataset exists for those measures.

Nearby Areas