Marino - Seaview Downs

SA2

Greater Adelaide / Marion

 
 
 
 
 
 
 
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Statistical Area (SA2) Boundary Analysis

This analysis uses ABS Statistical Areas Level 2 (SA2) boundaries, which can materially differ from Suburbs and Localities (SAL) even when sharing similar names.

SA2 boundaries are defined by the Australian Bureau of Statistics and are designed to represent communities for statistical reporting (e.g., census and ERP).

Suburbs and Localities (SAL) represent commonly-used suburb/locality names (postal-style areas) and may use different geographic boundaries. For comprehensive analysis, consider reviewing both boundary types if available.

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Sales ActivityProperty Sales Trends in Marino - Seaview Downs

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DemographicsPopulation Growth in Marino - Seaview Downs

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Marino - Seaview Downs has an estimated 10,237 residents, up from 9,703 at the 2021 Census — a change of 534 people, or 5.5%. Growth has averaged 0.9% a year over five years. Overseas migration accounts for 70.1% of that increase. That puts 838 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 AreaSearch, the population of Marino - Seaview Downs is estimated to be 10,237 in May 2026. This reflects a growth of 534 individuals (5.5%) relative to the 9,703 residents counted during the 2021 Census. This growth estimation is based on the June 2025 ABS estimated resident population of 10,209 combined with 41 validated new addresses registered since the Census. The density of the area stands at 838 persons per square kilometer, which aligns closely with typical values observed across comparable areas. The growth rate of 5.5% since the census lags the SA4 region (6.2%) by 0.7 percentage points.

Overseas migration was the primary driver of this demographic expansion, accounting for 70.1% of the overall population gains. Projections from the ABS and Geoscience Australia, issued in 2024 with 2022 as the baseline, are utilized for SA2 regions. For locations lacking this data or for projections past 2032, weighted aggregations of regional and LGA projections by age cohort from the SA State Government (released in 2023 based on 2021 numbers) are used. Demographic outlooks suggest the area will experience population expansion slightly below the national median. Based on the latest annual ERP statistics, the population is projected to increase by 640 residents by 2041, representing a total rise of 6.0% over the 16 years.

Frequently Asked Questions - Population

What is the latest population estimate for the Marino - Seaview Downs SA2?
Total population for the Marino - Seaview Downs SA2 was estimated to be approximately 10,237 as at May 26. This is based upon an estimated resident population of 10,209 from the ABS up to June 2025.
How has the population in the Marino - Seaview Downs SA2 changed since 2021?
The marino - seaview downs sa2 has added approximately 534 people and shown a 5.50% increase from the 9,703 people recorded at the 2021 Census period.
What is the population density in the Marino - Seaview Downs SA2?
The population density in the Marino - Seaview Downs SA2 is estimated at 838 persons per square kilometer based on the latest population estimate.
How much has the population grown over the past 10 years in the Marino - Seaview Downs SA2?
Over the past 10 years, the population in the Marino - Seaview Downs SA2 has shown a compound annual growth rate of 0.7% per annum.
What are the main drivers of population growth in the Marino - Seaview Downs SA2?
Population growth in the Marino - Seaview Downs SA2 is driven by: Overseas migration (70.1%), Natural increase (29.9%), Interstate migration (0.0%). The primary driver is Overseas migration, contributing 70.1% of overall population gains.

Residential SupplyHousing Development & Building Approvals in Marino - Seaview Downs

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185 new dwellings have been approved in Marino - Seaview Downs over the past five years, an average of 37 a year. That places the area in the 62nd percentile for residential development activity nationally, about 4 approvals per 1,000 residents a year. Of the 31 dwellings approved in the latest reporting year, 84% were detached houses and the rest townhouses or apartments. Approvals are currently running at an annualised 56, running ahead of that longer-run average. Figures come from ABS building approvals aggregated to this SA2 boundary and are updated monthly as the ABS releases them.

Detail

Marino - Seaview Downs has recorded an average of 37 residential development approvals per year, representing 185 dwellings over the preceding 5 financial years. Thus far in FY-26, there have been 52 approvals documented. Property values are supported by strong demand, with an average of 2.4 new residents added per constructed dwelling between FY-21 and FY-25. The average construction cost of these new residences is $390,000, which reflects a focus by builders on high-end, premium properties. Furthermore, commercial development approvals have reached $17.2 million in the current financial year, demonstrating steady capital investment in local businesses.

Building activity per capita in Marino - Seaview Downs is roughly half the level observed across Greater Adelaide, placing the suburb in the 61st percentile of all regions nationwide. The mix of recent housing construction consists of 84.0% detached houses and 16.0% townhouses or apartments, which preserves the traditional low-density profile of the suburb and appeals to families wanting spacious properties. The market density is low, with approximately 249 people for every dwelling approval. Based on the most recent quarterly estimate from AreaSearch, population projections indicate that Marino - Seaview Downs will add 612 residents by 2041. Current volumes of home construction appear sufficient to satisfy this demand, creating positive conditions for buyers and potentially supporting population growth that surpasses these projections.

Frequently Asked Questions - Development

How many dwelling approvals have occurred in the Marino - Seaview Downs SA2 recently?
Dwelling approval activity in the the Marino - Seaview Downs SA2 area has seen 83 residential approvals over the past two financial years, based on AreaSearch's SA2 aggregation method. The Marino - Seaview Downs SA2's current population of 10,237 has been supported by 37 approvals on average over recent years.
How does the Marino - Seaview Downs SA2's development activity compare to the broader region?
The Marino - Seaview Downs SA2 has seen 0.37 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 249 people in the Marino - Seaview Downs SA2, compared to one for every 144 in the broader region.
Is the Marino - Seaview Downs SA2 keeping up with housing demand?
With the population expected to increase by 612 people by 2041, around 306 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 Marino - Seaview Downs SA2?
Looking at development activity over the past five years, the Marino - Seaview Downs SA2's approval levels have been significantly above the yearly average of 37, indicating strong recent growth in development activity.
How many dwellings will be needed to accommodate future population growth in the Marino - Seaview Downs SA2?
The population in the Marino - Seaview Downs SA2 is expected to grow by 612 people by 2041, necessitating approximately 306 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 Marino - Seaview Downs SA2?
Over the past five years, the population in the Marino - Seaview Downs SA2 has grown by approximately 1,212 people, while 185 residential approvals were recorded. This equates to a ratio of 6.6 people added for each new dwelling approval. This high ratio suggests strong population growth relative to housing supply, potentially indicating unmet housing demand.
Are there opportunities for residential developers in the Marino - Seaview Downs SA2?
With dwelling approval activity running at an average of 37 approvals per year and a population of 10,237, 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 612 people by 2041, around 306 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 Marino - Seaview Downs

Development applications around Marino - Seaview Downs

Development approvals is a new addition to AreaSearch. We’re actively expanding council coverage and refining the dataset — details and statuses for some councils may be partial. Check back regularly for the latest pipeline.
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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 Marino - Seaview Downs

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AreaSearch tracks 6 current infrastructure and development projects inside Marino - Seaview Downs, worth an estimated $51 million. A further 31 sit in the immediately surrounding suburbs, taking the tracked pipeline within reach of the area to $2.34 billion. 13 are already under construction and 8 are due for completion within three years. The pipeline spans residential development, education & training and sports & recreation. 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

Local infrastructure projects, major works, and planning policy amendments play a significant role in shaping local performance. AreaSearch has identified 8 key projects expected to influence the area. The most relevant initiatives include the Flagstaff Road Upgrade, the Seaview Downs Primary School Redevelopment, a residential development located at 1 Greenfield Road, and the Southern Suburbs Residential Policy Code Amendment.

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Frequently Asked Questions - Infrastructure

What are some of the major infrastructure and planning changes likely to influence the Marino - Seaview Downs SA2?
Key infrastructure and planning changes likely to influence the Marino - Seaview Downs SA2 include: Flagstaff Road Upgrade (Planning); Seaview Downs Primary School Redevelopment (Construction); Residential Development at 1 Greenfield Road (Construction); Southern Suburbs Residential Policy Code Amendment (Planning); and OTR Seacombe Road Redevelopment (Completed). These projects represent significant developments that will shape the area's future infrastructure landscape.
What types of infrastructure projects are impacting the Marino - Seaview Downs SA2?
Infrastructure development impacting the Marino - Seaview Downs SA2 spans multiple sectors including Transport & Logistics, Education & Training, and Residential Development, among others.
What is the scale of infrastructure investment impacting the Marino - Seaview Downs SA2?
Infrastructure investment analysis indicates substantial capital deployment exceeding $1.7 billion in projects that will impact the extended area.
How does the Marino - Seaview Downs SA2's infrastructure development compare to other areas?
Infrastructure development activity impacting the Marino - Seaview Downs SA2 currently ranks below national averages at the 18thth percentile.
Flagstaff Road Upgrade
Category: Transport & Logistics
Stage: Construction | Est. Comp: 2026
Source / Links: Link 1   Link 2  

Upgrade of approximately 3.3 km of Flagstaff Road including duplication of the remaining three-lane section to a permanent four-lane divided carriageway, intersection improvements, upgraded drainage, shared walking and cycling paths, lighting and road safety improvements. Construction has been underway with staged traffic management and community updates.

Transport & Logistics

Residential Development at 1 Greenfield Road
Category: Residential Development
Stage: Construction | Est. Comp: 0

Approved development opportunity for 3 stunning two-storey townhouses with water views on a re-zoned and prepared vacant land parcel. This site was previously subject to a larger mixed-use development application.

Residential Development

Seaview Downs Primary School Redevelopment
Category: Education & Training
Stage: Construction | Est. Comp: 0
Source / Links: Link 1   Link 2  

Major upgrade project to deliver contemporary learning areas, new administration building, and demolition of ageing infrastructure, based on contemporary educational philosophies. The project received additional funding totaling $19.3 million.

Education & Training

Westfield Marion Expansion
Category: Retail
Stage: Approved | Est. Comp: 2027
Source / Links: Link 1   Link 2  

Major $259 million expansion and renovation of Westfield Marion shopping centre by Scentre Group. Adding 52 specialty shops and 20 eateries, new ground floor mall, four-level carpark facing Diagonal Road. Expanding from 135,300sqm to 152,200sqm. Part of $500 million South Australian development pipeline including new retail spaces, fresh food precinct, dining options, and entertainment facilities. Enhanced parking and contemporary design updates. Creates up to 2,600 construction and retail jobs, strengthening position as premier southern suburbs retail destination.Introduction of paid parking for stays over 3 hours with ticketless system using numberplate recognition.

Retail

Southern Suburbs Residential Policy Code Amendment
Category: Communities, Precincts & Urban Renewal
Stage: Planning | Est. Comp: 0
Source / Links: Link 1   Link 2  

A proposed planning amendment affecting residential zones in Southern Suburbs, including Seaview Downs, to transition areas to Hills Neighbourhood Zone and facilitate low-density infill development.

Communities, Precincts & Urban Renewal

OTR Seacombe Road Redevelopment
Category: Residential Development
Stage: Completed | Est. Comp: 2024
Source / Links: Link 1   Link 2  

Upgrade of the existing OTR fuel and convenience site delivering a reconfigured car park, a convenience drive-through, 2.4m acoustic fencing, and new on-site amenities including dog wash and vacuum facilities. The store page indicates drive-through and dog wash services operating, consistent with works being completed.

Residential Development

Seaview High School Upgrade
Category: Education & Training
Stage: Completed | Est. Comp: 2022
Source / Links: Link 1   Link 2  

Facility upgrade delivering a new 2 storey multi purpose Creative Design building, a new single storey Performing Arts facility with associated performance spaces, and refurbishment of an existing building to provide contemporary STEM learning areas. Project value reported at $17.65 million. Architect: Flightpath Architects. Builder: Badge Constructions. Construction completed, with completion reported by industry sources at end of 2022.

Education & Training

Flinders Medical Centre Southern Redevelopment Stage 1 (Acute Services Building)
Category: Health
Stage: Construction | Est. Comp: 2028
Source / Links: Link 1   Link 2  

Stage 1 of the Southern Adelaide Local Health Network redevelopment, anchored by a new seven-storey Acute Services Building at the front of Flinders Medical Centre. The tower delivers 17,000 square metres of new built area plus 3,000 square metres of refurbishment, adding 98 clinical spaces. It will house two 32-bed adult inpatient units, an 18-bay Medical Day Unit, a 16-bed Intensive Care Unit with a dedicated CT scanner suite, four operating theatres with a 14-bay recovery area, a Day of Surgery Admissions area, a new Podiatry department, and a dedicated floor for the FMC Eye Surgery Clinic which integrates the network's ophthalmology services into a single facility (a first for South Australia's public health system).The new building will form the hospital's main entrance with a large lobby, retail outlet and undercover drop-off zone. The wider Stage 1 program also includes a 12-bed Psychiatric Intensive Care Unit at Margaret Tobin Centre (opening March 2026), 48 new beds at Noarlunga Hospital (opened November 2025), 32 beds across two wards at the Repat Health Precinct (opened 2024), and supporting upgrades to mortuary (completed October 2025), kitchen, sterilisation services and electrical infrastructure. More than 20 million dollars of new major medical equipment will be installed including advanced imaging, automated pharmacy dispensing cabinets and a new CT scanner. Designed by ARM Architecture with Silver Thomas Hanley, with Built Environs as Managing Contractor and Aurecon providing structural and civil engineering. The Acute Services Building is expected to open in early 2028.

Health

Jobs & IndustryEmployment Trends in Marino - Seaview Downs

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5,798 residents of Marino - Seaview Downs are employed, from a labour force of 5,919. Unemployment sits at 2.0%, with participation at 70.1%. Weighted for its industry mix, the area's sectors are forecast to grow about 6.9% nationally over five years. That reflects industry composition only and makes no allowance for local population growth. The working-day population is estimated at 7,811, about 76% of the resident population, so more people leave the area for work than travel in. Unemployment and labour force come from ABS Small Area Labour Markets, updated quarterly; the industry and occupation profile is from the 2021 Census.

Detail

The local workforce is characterized by high levels of education and a strong representation in essential services. The unemployment rate is low at 2.0%, and estimated job growth reached 5.6% over the preceding year. As of March 2026, 5,798 residents are employed. The unemployment rate sits 1.8% below the rate of 3.8% recorded in Greater Adelaide, while workforce participation is standard at 70.1% compared to 66.6% in Greater Adelaide. According to Census data, 13.3% of workers worked from home, though this figure may have been influenced by COVID-19 pandemic restrictions.

The primary employment sectors for local residents are health care & social assistance, construction, and education & training. The construction sector exhibits a high concentration of local workers, with a share that is 1.4 times the regional average. Conversely, manufacturing plays a smaller role, employing 5.3% of the workforce compared to 7.0% across the region. A comparison of the Census working population against the resident population suggests that local employment opportunities within the area are limited. An analysis of SALM and ABS statistics shows that during the year leading to March 2026, employment rose by 5.6% and the total labor force grew by 5.1%, leading to a 0.5 percentage point drop in the unemployment rate. Over the same period, Greater Adelaide saw employment grow by 4.2% and the labor force expand by 4.0%, while its unemployment rate fell by 0.2 percentage points. National employment projections from May-25 by Jobs and Skills Australia provide context for future labor demand. These five and ten-year forecasts have been applied to the local workforce structure to model potential employment trajectories. Although national employment is projected to grow by 6.6% over five years and 13.7% over ten years, the rates of expansion vary by industry. Applying these national sector trends to the occupational profile of Marino - Seaview Downs suggests local employment could grow by 6.9% over five years and 14.2% over ten years, assuming a simple weighting extrapolation that excludes local population projections.

Frequently Asked Questions - Employment

What is the employment situation in the Marino - Seaview Downs SA2?
As of March 2026, the Marino - Seaview Downs SA2 has approximately 5,798 employed residents with an unemployment rate of 2.0%. This very low unemployment rate indicates a tight labour market with strong demand for workers. The area ranks in the top 25% nationally for employment performance, indicating a robust job market.
How does the Marino - Seaview Downs SA2's unemployment rate compare to the broader region?
As of March 2026, the unemployment rate in the Marino - Seaview Downs SA2 stands at 2.0%, which is 1.8 percentage points below Greater Adelaide's rate of 3.8%. This lower unemployment rate suggests stronger local employment conditions. For comparison, the national unemployment rate is 4.2%.
What are the major employment sectors in the Marino - Seaview Downs SA2?
The employment landscape in the Marino - Seaview Downs SA2 is dominated by several key sectors. The largest employers are health care & social assistance (19.0% of employment), construction (12.2%), and education & training (10.6%). Other significant employers include retail trade and professional & technical.
How has employment changed recently in the Marino - Seaview Downs SA2?
Over the past year to March 2026, the Marino - Seaview Downs SA2 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 Marino - Seaview Downs SA2?
The workforce participation rate in the Marino - Seaview Downs SA2 is 70.1%, which represents the proportion of working-age residents who are either employed or actively seeking work. This high participation rate indicates strong workforce engagement and economic vitality. The local rate leading the Greater Adelaide average of 66.6%, showing similar workforce dynamics to the broader region.
Which industries are over-represented in the Marino - Seaview Downs SA2's employment market?
The marino - seaview downs sa2 shows notable specialization in construction, which employs 12.2% of the local workforce compared to 8.7% regionally. This moderate specialization indicates some local strength in the sector.
What are the employment growth prospects for the Marino - Seaview Downs SA2?
Based on Jobs and Skills Australia projections applied to the Marino - Seaview Downs SA2's industry mix, employment is expected to grow by 6.9% over the next five years and 14.2% over ten years. This exceeds the national forecast of 6.6% over five years, suggesting the area's industry composition is well-positioned for future growth. Steady growth is anticipated across multiple sectors, providing diverse employment opportunities.
How does the job market in the Marino - Seaview Downs SA2 compare nationally?
The marino - seaview downs sa2's employment market shows strong performance nationally, ranking in the top 25% of areas assessed by AreaSearch. This indicates robust employment conditions and economic vitality compared to other regions. 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 Marino - Seaview Downs SA2?
Skilled workers will find excellent opportunities in the Marino - Seaview Downs SA2, with knowledge-intensive sectors comprising 42.0% of local employment. Key sectors for skilled workers include health care & social assistance (19.0%), education & training (10.6%), and professional & technical (7.5%). With projected employment growth of 6.9% over five years, demand for skilled workers is expected to remain strong.

EarningsHousehold Income in Marino - Seaview Downs

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Median household income in Marino - Seaview Downs is $1,821 a week (about $95,000 a year), with median personal income at $844 a week. ATO records put median taxable income at $55,275 a year against an average of $70,223. 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 financial year 2023 ATO statistics compiled by AreaSearch, income levels in the Marino - Seaview Downs SA2 exceed national averages. The median income for taxpayers is $55,275, and the average income is $70,223, compared to Greater Adelaide averages of $54,808 and $66,852 respectively. Adjusting for a 10.17% rise in the Wage Price Index since financial year 2023, estimated incomes as of March 2026 are approximately $60,896 (median) and $77,365 (average). Census findings place local family, household, and personal incomes around the 56th percentile nationally. The most common weekly earnings band is $1,500 - 2,999, which includes 33.2% of the population (3,398 individuals), matching the metropolitan rate of 31.8% in this bracket.

Residents retain 86.6% of their income after paying for housing, and the area is situated in the 7th decile of the SEIFA index for income.

Frequently Asked Questions - Income

What is the median taxable income in the Marino - Seaview Downs SA2?
Based on Wage Price Index adjustments to March 2026, the estimated median taxable income in the Marino - Seaview Downs SA2 is approximately $60,896. The official ATO data from FY-23 recorded a median of $55,275.
What is the average taxable income in the Marino - Seaview Downs SA2?
Based on Wage Price Index adjustments to March 2026, the estimated average taxable income in the Marino - Seaview Downs SA2 is approximately $77,365. The official ATO data from FY-23 recorded an average of $70,223.
How does the median taxable income in the Marino - Seaview Downs SA2 compare to the region?
Based on Wage Price Index adjustments to March 2026, the estimated median taxable income in the Marino - Seaview Downs SA2 is approximately $60,896 compared to $60,382 in Greater Adelaide. The official ATO data from FY-23 shows $55,275 and $54,808 respectively.
How does the average taxable income in the Marino - Seaview Downs SA2 compare to the region?
Based on Wage Price Index adjustments to March 2026, the estimated average taxable income in the Marino - Seaview Downs SA2 is approximately $77,365 compared to $73,651 in Greater Adelaide. The official ATO data from FY-23 shows $70,223 and $66,852 respectively.
What are the main income cohorts in the Marino - Seaview Downs SA2 according to the 2021 Census?
As per the 2021 Census, the income bracket containing the largest proportion (~33.2% / 3,398 persons) of the Marino - Seaview Downs SA2's population is the $1,500 - 2,999 cohort.
How do the main income cohorts in the Marino - Seaview Downs SA2 compare to the region?
The largest income cohort in the Marino - Seaview Downs SA2 is the $1,500 - 2,999 group, representing about 33.2% 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 Marino - Seaview Downs SA2 according to the 2021 Census?
The 2021 Census data indicates that the median household income in the Marino - Seaview Downs SA2 is $1,821/wk.
What is the median family income in the Marino - Seaview Downs SA2 according to the 2021 Census?
According to the 2021 Census, the median family income in the Marino - Seaview Downs SA2 is $2,206/wk.
What is the median personal income in the Marino - Seaview Downs SA2 according to the 2021 Census?
The 2021 Census shows that the median personal income in the Marino - Seaview Downs SA2 is $844/wk.
How does the Marino - Seaview Downs SA2's income rank nationally?
According to AreaSearch's aggregation of the latest postcode level ATO data released for FY-23, the Marino - Seaview Downs SA2 had a median income among taxpayers of $55,275 with the average level standing at $70,223. This is above the national average 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 $60,896 (median) and $77,365 (average) as of March 2026.
What is the disposable income in the Marino - Seaview Downs SA2?
The estimated disposable income in the Marino - Seaview Downs SA2 is $6,836 per year according to AreaSearch analysis.
How does the Marino - Seaview Downs SA2's disposable income compare to the region?
The marino - seaview downs sa2's disposable income is $6,836 compared to $5,698 for Greater Adelaide, based on AreaSearch analysis.

Housing StockHousing & Dwellings in Marino - Seaview Downs

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Marino - Seaview Downs had 3,686 occupied dwellings at the 2021 Census, 93% detached houses and 1% apartments. 44% are owned with a mortgage, 15% rented and 40% owned outright. At that Census the median rent was $375 a week and the median mortgage repayment $1,820 a month. Rent absorbs 20.6% of household income here and mortgage repayments 23.1%. Dwelling stock, tenure and housing costs are 2021 Census measures — the only source that counts dwellings at this boundary size.

Detail

At the time of the latest Census, the housing stock in Marino - Seaview Downs consisted of 92.9% detached houses and 7.1% semi-detached properties, apartments, or other dwelling types, compared to 75.2% houses and 24.9% other dwellings across metropolitan Adelaide. Home ownership is high, with 40.4% of residents owning their property outright. The remaining homes are either mortgaged (44.3%) or rented (15.3%). The median monthly mortgage payment of $1,820 is higher than the Adelaide metropolitan average of $1,562, while the median weekly rent of $375 is also higher than the metropolitan average of $320.

Nationally, local mortgage payments sit below the Australian median of $1,863, whereas weekly rents align exactly with the national median of $375.

Frequently Asked Questions - Housing

What percentage of homes are owned vs rented in the Marino - Seaview Downs SA2?
In the Marino - Seaview Downs SA2, 40.4% of homes are owned outright, 44.3% are owned with a mortgage, and 15.3% are rented.
What percentage of dwellings in the Marino - Seaview Downs SA2 are houses?
According to the latest data, 92.9% of dwellings in the Marino - Seaview Downs SA2 are houses.
What percentage of dwellings in the Marino - Seaview Downs SA2 are apartments or units?
In the Marino - Seaview Downs SA2, 1.1% of dwellings are apartments or units, with an additional 6.0% being semi-detached dwellings.
What is the level of outright home ownership in the Marino - Seaview Downs SA2?
Outright home ownership in the Marino - Seaview Downs SA2 stands at 40.4%, compared to 32.1% in Greater Adelaide.
What is the median monthly mortgage repayment in the Marino - Seaview Downs SA2?
The median monthly mortgage repayment in the Marino - Seaview Downs SA2 is $1,820, compared to $1,562 in Greater Adelaide.
What is the median weekly rent in the Marino - Seaview Downs SA2?
The median weekly rent in the Marino - Seaview Downs SA2 is $375, compared to $320 in Greater Adelaide.
What is the distribution of rental prices in the Marino - Seaview Downs SA2?
In the Marino - Seaview Downs SA2, 6.7% of rentals are $0-149/week, 30.4% are $150-349/week, 60.7% are $350-649/week, 2.2% are $650-949/week, and 0.0% are $950+/week.
What is the average monthly housing cost in the Marino - Seaview Downs SA2?
The aggregate monthly housing cost in the Marino - Seaview Downs SA2 is $1,054, which represents the average monthly cost across all housing types.
What percentage of income do residents spend on housing in the Marino - Seaview Downs SA2?
In the Marino - Seaview Downs SA2, households with mortgages typically spend 23.1% of their income on mortgage repayments, while renters spend 20.6% of their income on rent.
How crowded are homes in the Marino - Seaview Downs SA2?
The average persons per bedroom ratio in the Marino - Seaview Downs SA2 is 0.8, indicating the level of household density.
How does housing affordability in the Marino - Seaview Downs SA2 compare to the region?
Housing affordability in the Marino - Seaview Downs SA2 shows mortgage holders spending 23.1% of income on repayments (vs 23.3% regionally), while renters spend 20.6% of income on rent (vs 20.7% regionally).
What types of dwellings are most common in the Marino - Seaview Downs SA2?
The dwelling mix in the Marino - Seaview Downs SA2 consists of 92.9% detached houses, 6.0% semi-detached dwellings, 1.1% apartments, and 0.0% other dwelling types.
What is the weighted average housing cost based on tenure mix in the Marino - Seaview Downs SA2?
Factoring in the ownership distribution, the weighted average monthly housing cost is approximately $1,055. This accounts for outright owners paying no housing costs, mortgage holders paying $1,820/month, and renters paying $1,624/month.
How affordable is housing in the Marino - Seaview Downs SA2 relative to local incomes?
Housing in Marino - Seaview Downs consumes approximately 13.4% of median household income ($7,885 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 Marino - Seaview Downs SA2?
Recent development applications in Marino - Seaview Downs show attached dwellings contributing 19% of approvals compared to 7% of existing stock, while detached houses represent 81% of applications versus 93% of current dwellings. This suggests increasing densification. Density increases remain below national trends.

HouseholdsHousehold Composition in Marino - Seaview Downs

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Marino - Seaview Downs counted 3,686 households at the 2021 Census, an estimated 3,889 today, averaging 2.6 people each. 34% are couples with children, against 30% couples without children. 22% of households are people living alone, and families average 1.6 children. Household and family composition is measured only by the Census, so these are 2021 figures.

Detail

Family households represent 75.3% of the total, consisting of couples with children (33.9%), couples without children (30.3%), and single-parent households (10.3%). Non-family households account for 24.7%, with lone-person households comprising 21.8% and group households making up 2.9%. The median household size of 2.6 residents exceeds the Greater Adelaide average of 2.5.

Frequently Asked Questions - Households

How many households are in the Marino - Seaview Downs SA2?
As of the 2021 Census, the Marino - Seaview Downs SA2 had 3,686 households. Based on population growth patterns, this has grown by approximately 5.5% to an estimated 3,889 households today.
What is the typical household size?
The median household size in the Marino - Seaview Downs SA2 is 2.6 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 75.3% of all households. The remaining households consist of lone person households (21.8%), group households (2.9%), and other household types (0.0%).
How are families structured in the area?
Among the 2,775 family households, 33.9% are couples with children, 30.3% are couples without children at home, and 10.3% are single parent families. This mix shapes local demand for schools, family services, and housing types.
How does the Marino - Seaview Downs SA2 compare to regional household patterns?
Compared to Greater Adelaide, the Marino - Seaview Downs SA2 shows distinct household patterns. Family households are notably over-represented at 75.3% (versus 68.6% regionally). Conversely, lone person households are under-represented at 21.8% compared to the regional 27.7%. This family-oriented profile influences local demand for family homes, schools, and children's services.
What is the average family size?
Families in the Marino - Seaview Downs SA2 have an average of 1.6 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 Marino - Seaview Downs SA2?
Marriage patterns reveal 51.1% of the adult population are currently married, while 32.4% 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 21.8% of all households in the Marino - Seaview Downs SA2, notably lower 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 2.9% 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 Marino - Seaview Downs

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30.4% of adults in Marino - Seaview Downs hold a university qualification, including 20.4% with a bachelor degree and 7.1% with postgraduate qualifications. A further 24.0% hold a vocational qualification. 3 schools serve the area, with 2,235 enrolment places and an average ICSEA of 1,049 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

University degrees are held by 30.4% of residents aged 15 and over, exceeding the South Australian average of 25.7%. Bachelor degrees are the most common qualification at 20.4%, followed by postgraduate degrees at 7.1% and graduate diplomas at 2.9%. Vocational education is also prominent, with 35.7% of the population aged 15 and over holding technical qualifications, consisting of advanced diplomas (11.7%) and certificates (24.0%). Enrolment in education is high, with 27.7% of residents attending an educational institution. This population includes 9.6% in primary school, 7.2% in high school, and 5.7% studying at the tertiary level.

Frequently Asked Questions - Education

What percentage of people in the Marino - Seaview Downs SA2 have university qualifications?
30.4% of people aged 15 and over in the Marino - Seaview Downs SA2 have university qualifications, compared to 28.9% in the broader region.
What percentage of people in the Marino - Seaview Downs SA2 have no formal qualifications?
33.9% of people aged 15 and over in the Marino - Seaview Downs SA2 have no formal qualifications, compared to 39.0% regionally.
How does the Marino - Seaview Downs SA2's education level compare to national averages?
The marino - seaview downs sa2 ranks in the 66th percentile nationally for education based on AreaSearch's analysis of qualification and performance metrics.
What types of qualifications are most common in the Marino - Seaview Downs SA2?
The most common qualifications in the Marino - Seaview Downs SA2 are: Certificate (24.0%), Bachelor Degree (20.4%), Advanced Diploma (11.7%).
What proportion of the Marino - Seaview Downs SA2's population is currently attending educational institutions?
27.7% of the population in the Marino - Seaview Downs SA2 is currently engaged in formal education, with 9.6% in primary school, 7.2% in secondary school, 5.7% at university.
What is the ICSEA score for schools in the Marino - Seaview Downs SA2?
The average ICSEA (Index of Community Socio-Educational Advantage) score for schools in the Marino - Seaview Downs SA2 is 1049, indicating average socio-educational advantage (national average is 1000).
How many schools are located within the Marino - Seaview Downs SA2?
There are 3 schools within the Marino - Seaview Downs SA2, with a combined enrollment of approximately 2,235 students.
What types of schools are available in the Marino - Seaview Downs SA2?
The marino - seaview downs sa2 includes 1 primary school, 1 secondary school, 1 combined school.

Schools Detail

AmenitiesServices & Amenities in Marino - Seaview Downs

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Getting AroundTransport & Commuting in Marino - Seaview Downs

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Public transport in Marino - Seaview Downs reaches 45 stops on 28 routes, timetabled for about 2,800 services a week. The typical home sits about 250 m from its nearest stop. Buses carry the largest share of public transport commuters. Households keep an average of 1.6 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

Public transport options in Marino - Seaview Downs include 45 active bus and train stops. These are serviced by 28 routes, which generate 2,787 passenger trips each week. Transport access is rated as good, with the average distance to a stop being 250 meters. Because the area is primarily residential, most workers commute out of the suburb, with 88% traveling by car and 7% using the train. The average number of vehicles per household is 1.6, which is higher than the regional average. A relatively low 13.3% of workers worked from home, based on the 2021 Census, which may reflect pandemic-era conditions.

Across all routes, service frequency averages 398 trips per day, which translates to approximately 61 weekly departures for each individual transit stop.

Frequently Asked Questions - Transport

How many public transport stops are in Marino - Seaview Downs?
There are 45 public transport stops within the Marino - Seaview Downs SA2.
How frequent are the transport services in Marino - Seaview Downs?
the Marino - Seaview Downs SA2 has 2,787 weekly trips across 28 routes, averaging 398 trips per day.
How far are residents from public transport in Marino - Seaview Downs?
On average, residential properties are 250 meters from the nearest transport stop.

Transport Stops Detail

HealthcareHealth Services in Marino - Seaview Downs

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69.7% of residents in Marino - Seaview Downs report no long-term health condition, a healthier profile than 88% of areas nationally. 4.5% need daily assistance with core activities, and 53.9% hold private health cover. The standardised death rate runs at 3.0 per 1,000 residents. Health conditions, assistance needs and insurance are 2021 Census measures; the death rate comes from current ABS releases.

Detail

Based on AreaSearch assessments of mortality rates and chronic illnesses, health outcomes in Marino - Seaview Downs are strong, with particularly low rates of common health conditions among younger cohorts. Private health insurance coverage is slightly above the SA2 average, with approximately 54% of the population (~5,517 people) holding policies. The most prevalent health conditions are arthritis, affecting 8.0% of the community, and asthma, affecting 7.7%. A total of 69.7% of residents reported having no chronic medical conditions, compared to 67.9% across Greater Adelaide. Health outcomes for residents under 65 are better than average.

Individuals aged 65 and over represent 21.3% of the population (2,179 people), which is higher than the Greater Adelaide level of 19.2%. Seniors in the area exhibit strong health outcomes, although their health metrics rank lower nationally than the broader local population.

Frequently Asked Questions - Health

How many people in the Marino - Seaview Downs SA2 have private health insurance?
Around 53.9% of people in the Marino - Seaview Downs SA2 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 Marino - Seaview Downs SA2?
In the Marino - Seaview Downs SA2, 4.5% 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 Marino - Seaview Downs SA2?
7.7% of people in the Marino - Seaview Downs SA2 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 Marino - Seaview Downs SA2?
Diabetes affects 3.9% of the the Marino - Seaview Downs SA2 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 Marino - Seaview Downs SA2?
4.1% of people in the Marino - Seaview Downs SA2 have heart disease. Across the region of Greater Adelaide, 3.8% of the population is affected by heart disease.
How does the Marino - Seaview Downs SA2 compare to the region in terms of overall private health coverage?
In the Marino - Seaview Downs SA2, 53.9% 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 Marino - Seaview Downs

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25.6% of Marino - Seaview Downs residents were born overseas and 13.0% speak a language other than English at home. The largest reported ancestries are English (31.7%) and Australian (24.5%). Ancestry, language and country of birth are counted only by the Census, so these are 2021 figures.

Detail

Cultural diversity in Marino - Seaview Downs is higher than average, with 13.0% of residents using a non-English language at home and 25.6% born outside Australia. Christianity is the most common religion, representing 40.9% of the population. The most prominent religious overrepresentation is in the Other category, which accounts for 1.3% of the population compared to 1.8% across Greater Adelaide. Regarding parental country of birth, the three most common ancestries are English (31.7%), Australian (24.5%), and Irish (7.2%). Some European ancestries show higher concentrations than the regional average, with Polish heritage at 1.2% (compared to 1.0% regionally), German at 5.8% (compared to 5.1%), and Welsh at 0.7% (compared to 0.6%).

Frequently Asked Questions - Diversity

What is the level of cultural diversity in the Marino - Seaview Downs SA2?
Marino - Seaview Downs was found to be above average in terms of cultural diversity, with 13.0% of its population speaking a language other than English at home and 25.6% born overseas.
What is the most common religion in the Marino - Seaview Downs SA2?
The main religion in Marino - Seaview Downs was found to be Christianity, which makes up 40.9% of people in Marino - Seaview Downs. However, the most apparent overrepresentation was in Other, which comprises 1.3% of the population, compared to 1.8% across Greater Adelaide.
What are the top countries of origin in the Marino - Seaview Downs SA2?
In terms of ancestry (country of birth of parents), the top three represented groups in Marino - Seaview Downs are English, comprising 31.7% of the population, Australian, comprising 24.5% of the population, and Irish, comprising 7.2% of the population. Additionally, there are notable divergences in the representation of certain other ethnic groups: Polish is notably overrepresented at 1.2% of Marino - Seaview Downs (vs 1.0% regionally), German at 5.8% (vs 5.1%) and Welsh at 0.7% (vs 0.6%).
How does the percentage of people born overseas compare to the regional average?
25.6% of the the Marino - Seaview Downs SA2 population was born overseas, compared to 28.7% regionally.
What percentage of the the Marino - Seaview Downs SA2 population speaks a language other than English at home?
13.0% of the population in the Marino - Seaview Downs SA2 speaks a language other than English at home, compared to 22.2% in the wider region.
How many people in the Marino - Seaview Downs SA2 identify as Australian Aboriginal?
0.6% of the the Marino - Seaview Downs SA2 population identifies as Australian Aboriginal, compared to 1.2% in the region.
What is the citizenship status of the population in the Marino - Seaview Downs SA2?
90.6% of the the Marino - Seaview Downs SA2 population holds citizenship, compared to 86.3% in the wider region.

Age StructureAge Profile of Marino - Seaview Downs

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The median resident of Marino - Seaview Downs is 43. 22.4% 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 43 in Marino - Seaview Downs is higher than the Greater Adelaide average of 39 and the national median of 38. The suburb has a higher proportion of residents aged 45 - 54 (13.7%) than Greater Adelaide, but a lower share of people aged 25 - 34 (9.6%). Since the 2021 Census, the 15 to 24 age bracket grew from 11.0% to 12.8% of the population, and the 75 to 84 cohort rose from 7.1% to 8.4%, while the 65 to 74 group fell from 11.8% to 10.2%.

By 2041, demographic projections suggest the number of residents aged 85 and over will grow by 105% (281 people), rising from 269 to 551, while the 35 to 44 and 0 to 4 age brackets are expected to decrease in size.

Frequently Asked Questions - Age

What is the median age in the Marino - Seaview Downs SA2?
According to the latest data, the median age in the Marino - Seaview Downs SA2 is 43 years.
How does the Marino - Seaview Downs SA2's median age compare to broader areas?
At 43 years, Marino - Seaview Downs is 4 years older than the Greater Adelaide average (39 years) and 5 years older than the national average (38 years).
What age groups are over-represented in the Marino - Seaview Downs SA2?
The most over-represented age group in the Marino - Seaview Downs SA2 compared to the Greater Adelaide region is the 45 - 54 group, making up 13.7% of the population.
What age groups are under-represented in the Marino - Seaview Downs SA2?
The most under-represented age group in the Marino - Seaview Downs SA2 compared to the Greater Adelaide region is the 25 - 34 group, making up 9.6% of the population.
Are there age groups with notable population variances?
No, the age distribution in the Marino - Seaview Downs SA2 is broadly in line with the Greater Adelaide region.
What is the percentage of children (0-14 years) in the Marino - Seaview Downs SA2?
The percentage of children aged 0-14 years in the Marino - Seaview Downs SA2 is 17.2%.
What is the percentage of older people (65+ years) in the Marino - Seaview Downs SA2?
The percentage of people aged 65 and over in the Marino - Seaview Downs SA2 is 21.3%.

Data & MethodBoundaries, Sources & Method for Marino - Seaview Downs

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 SA2 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, State agencies, Local governments Daily Jul 2026 last month all 6 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 Jul 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 — 41 validated new addresses here. The headline figure is therefore a current estimate for May 2026, not a 2021 count (9,703 at the 2021 Census → 10,237 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 (403021060). QuickStats reports 2021 only — the figures on this page are more current wherever the ledger shows a later date.

Common questions about this page

Why can the Marino - Seaview Downs SA2 boundary differ from the suburb boundary?
This page uses ABS Statistical Area Level 2 (SA2) boundaries for statistical reporting (e.g., census and ERP). SA2 areas can differ materially from Suburbs and Localities (SAL) boundaries, even when they share similar names, because they are defined for different purposes and often use different geographic boundaries.
Where does the data on this Marino - Seaview Downs 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 Marino - Seaview Downs 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 (Jul 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