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 10,240 residents, up from 9,703 at the 2021 Census — a change of 537 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 839 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 research conducted by AreaSearch, the population of Marino - Seaview Downs stands at roughly 10,240 as of Aug 2026. This represents an expansion of 537 people (5.5%) compared to the 9,703 individuals counted in the 2021 Census. This adjustment derives from the ABS estimated resident population figure of 10,209 recorded as of June 2025 alongside 43 validated new addresses recorded following the Census. The resulting population density is 838 persons per square kilometer, aligning closely with typical benchmarks recorded across AreaSearch assessment areas. With a 5.5% expansion rate post-census, the locality trails the wider SA4 region (6.3%) by only 0.8 percentage points, highlighting sound growth momentum.

The predominant driver of local population gains has been overseas migration, accounting for roughly 70.1% of recent net additions. Projections published jointly by the ABS and Geoscience Australia in 2024, utilizing 2022 as their baseline year, are applied by AreaSearch across SA2 locations. Where SA2 coverage is absent, and across timeframes following post-2032, figures incorporate the SA State Government's 2023 Regional/LGA age-cohort projections based on 2021 numbers, using weighted aggregation methods to bridge LGA trends to SA2 geographies. Over the coming years, local demographic growth is projected to track slightly below the national statistical area median, adding 655 persons through to 2041 relative to latest annual ERP baselines, translating into an overall expansion of 6.1% 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 10,240 as at Aug 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 537 people and shown a 5.53% 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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210 new dwellings have been approved in Marino - Seaview Downs over the past five years, an average of 42 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 42 dwellings approved in the latest reporting year, 79% were detached houses and the rest townhouses or apartments. Figures come from ABS building approvals aggregated to this SA2 boundary and are updated monthly as the ABS releases them.

Detail

Residential building activity in Marino - Seaview Downs has averaged approximately 42 dwelling approvals annually, accumulating to 210 homes across the past 5 financial years. Between FY-22 and FY-26, the area added an average of 2.1 people per year for every newly built home over the past 5 financial years, underscoring resilient housing demand that underpins local property values. Construction quality is highlighted by an average new dwelling value of $489,000, moderately exceeding regional benchmarks. Concurrently, commercial development has progressed at a moderate pace, with $17.2 million worth of commercial building approvals logged in the current financial year.

On a per capita basis, building volume in Marino - Seaview Downs reaches approximately 59% of Greater Adelaide levels, ranking in the 64th percentile across the country. Detached houses account for 79.0% of recent construction while attached dwellings represent 21.0%, reinforcing a low-density suburban landscape favored by purchasers seeking spacious living environments. With approximately 200 people per approval, the district maintains a distinctly low-density character. According to demographic forecasts based on the most recent AreaSearch quarterly release, Marino - Seaview Downs is projected to expand by 624 residents up to 2041. At present rates of construction, future residential supply appears well-positioned to satisfy incoming demand, fostering favorable market conditions for prospective buyers while leaving room for population growth to potentially outpace current 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 102 residential approvals over the past two financial years, based on AreaSearch's SA2 aggregation method. The Marino - Seaview Downs SA2's current population of 10,240 has been supported by 42 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 0.42 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 200 people in the Marino - Seaview Downs SA2, compared to one for every 122 in the broader region.
Is the Marino - Seaview Downs SA2 keeping up with housing demand?
With the population expected to increase by 624 people by 2041, around 312 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 42, 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 624 people by 2041, necessitating approximately 312 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 210 residential approvals were recorded. This equates to a ratio of 5.8 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 42 approvals per year and a population of 10,240, 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 624 people by 2041, around 312 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 32 sit in the immediately surrounding suburbs, taking the tracked pipeline within reach of the area to $2.87 billion. 14 are already under construction and 9 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 growth and community outcomes are fundamentally shaped by capital works, strategic planning initiatives, and major infrastructure upgrades. AreaSearch has pinpointed 8 key projects poised to influence the locality. Notable undertakings include the Flagstaff Road Upgrade, Seaview Downs Primary School Redevelopment, Residential Development at 1 Greenfield Road, and the Southern Suburbs Residential Policy Code Amendment, with key details provided below.

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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: Social Infrastructure
Stage: Construction | Est. Comp: 2028

The Flinders Medical Centre Stage 1 Southern Redevelopment is a major $572 million public healthcare expansion delivered by Built Environs for SA Health and the Department for Infrastructure and Transport. The centerpiece is a seven-storey Acute Services Building adding 98 clinical beds, two 32-bed inpatient wards, a 16-bed satellite ICU, eye surgery suites, and four operating theatres. The building topped out in mid-2026 and is scheduled to open to patients in early 2028.

Social Infrastructure

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 69.8%. 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 7,814, 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 workforce in Marino - Seaview Downs is characterized by strong educational credentials, a solid presence across vital services industries, an unemployment level of merely 2.0%, and annual employment growth estimated at 5.6%. In March 2026, employed residents numbered 5,798, while the local jobless rate sat 1.8% below the Greater Adelaide benchmark of 3.8%. Labor force participation was steady at 69.8%, outpacing Greater Adelaide's 66.4%. Census figures showed just 13.3% of workers based at home, though pandemic-related lockdown measures should be kept in mind. Local resident employment is heavily clustered in health care & social assistance, construction, and education & training.

The construction sector stands out as a clear area of local concentration, capturing a workforce proportion 1.4 times that of the broader region. Conversely, manufacturing claims a smaller presence, engaging only 5.3% of Marino - Seaview Downs workers relative to 7.0% throughout Greater Adelaide. Comparing Census resident worker totals against the local working population highlights relatively constrained local job availability. An analysis of SALM and ABS statistics by AreaSearch shows that in the twelve months to March 2026, local employment expanded by 5.6% and the labor pool increased by 5.1%, lowering the unemployment rate by 0.5 percentage points. By comparison, Greater Adelaide experienced a 4.2% rise in employment, a 4.0% increase in the labor force, and a 0.2 percentage point drop in unemployment. Longer-term national labor projections released by Jobs and Skills Australia in Mar-26 provide additional context regarding future workforce trends across Marino - Seaview Downs. Nationally, total employment is projected to expand by 6.6% across five years and 13.7% over ten years, with distinct variation across specific sectors. Applying these industry growth expectations across the local employment base indicates an anticipated employment rise in Marino - Seaview Downs of 6.9% across five years and 14.2% across ten years (this represents a direct weighting extrapolation for demonstration purposes and excludes localized population modeling).

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 69.8%, which represents the proportion of working-age residents who are either employed or actively seeking work. This healthy participation rate reflects good employment opportunities and workforce engagement. The local rate leading the Greater Adelaide average of 66.4%, 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

Postcode-level ATO records compiled by AreaSearch for financial year 2023 indicate that earnings across the Marino - Seaview Downs SA2 exceed the nationwide benchmark, registering a median of $55,275 and an average of $70,223, outperforming Greater Adelaide's median of $54,808 and average of $66,852. Accounting for an increase of 10.17% in the Wage Price Index since financial year 2023, updated estimates as of March 2026 reach approximately $60,896 for median income and $77,365 for average income. In the 2021 Census, combined personal, family, and household earnings placed near the 56th percentile nationally.

The most prominent income tier consists of individuals earning $1,500 - 2,999 weekly, representing 33.2% of the local population (3,399 residents), comparable to the 31.8% regional proportion. Disposable funds post-housing costs remain strong at 86.6%, placing the area within the 7th decile on the SEIFA income scale.

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% / 3,399 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

According to the latest Census, the housing inventory in Marino - Seaview Downs was dominated by standalone houses at 92.9%, with other dwellings (including semi-detached units, apartments, and alternative dwellings) making up 7.1%, contrasting with Adelaide metro where houses represented 75.2% and other dwellings accounted for 24.9%. Outright home ownership stood well above metropolitan levels at 40.4%, while mortgaged properties accounted for 44.3% and rental housing comprised 15.3%. Monthly mortgage payments stood at a median of $1,820, noticeably above the Adelaide metro median of $1,562, whereas median weekly rent was recorded at $375 against $320 across Adelaide metro.

In a nationwide context, mortgage repayments in Marino - Seaview Downs fall beneath the national average of $1,863, while rental rates align directly 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?
Considering the housing occupancy patterns, 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 27% of approvals compared to 7% of existing stock, while detached houses represent 73% of applications versus 93% of current dwellings. This suggests increasing densification. Housing density growth is around the national average.

HouseholdsHousehold Composition in Marino - Seaview Downs

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Marino - Seaview Downs counted 3,686 households at the 2021 Census, an estimated 3,890 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

Families constitute the vast majority of local households at 75.3%, consisting of couples with children (33.9%), childless couples (30.3%), and single parent families (10.3%). The remaining 24.7% consists of non-family arrangements, primarily lone person households at 21.8% and group households at 2.9%. The median household size across the area sits at 2.6 people, slightly exceeding the 2.5 average seen across Greater Adelaide.

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 3,890 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

Tertiary educational attainment among Marino - Seaview Downs residents aged 15+ stands at 30.4%, placing it above the statewide benchmark of 25.7%. Bachelor degrees represent the largest single category at 20.4%, with postgraduate degrees at 7.1% and graduate diplomas at 2.9%. In addition, technical and trade training is widespread, with vocational credentials held by 35.7% of the cohort aged 15+, divided between certificates (24.0%) and advanced diplomas (11.7%). Community engagement in structured learning is substantial, with 27.7% of local inhabitants actively enrolled in study programs. This group consists of 9.6% attending primary education, 7.2% enrolled in secondary education, and 5.7% undertaking tertiary education.

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 26 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 connectivity in Marino - Seaview Downs is supported by 45 active stops catering to train and bus services. These facilities are served across 26 distinct transit routes, generating 2,783 passenger services each week. Access is rated as good, with local homes typically positioned within 250 meters of the closest stop. Reflecting its suburban residential profile, outward commuting is standard: private vehicles represent the dominant mode of travel at 88%, while 7% of trips occur by train. Household motor vehicle ownership averages 1.6 per dwelling, higher than regional benchmarks.

Meanwhile, 13.3% of workers worked from home during the 2021 Census, a figure potentially influenced by prevailing COVID-19 settings. Public transport services provide an average of 397 scheduled trips each day across the collective network, corresponding to roughly 61 weekly journeys for every individual 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 2,783 weekly trips across 26 routes, averaging 397 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

Analysis of mortality statistics and chronic disease incidence by AreaSearch highlights favorable health outcomes throughout Marino - Seaview Downs, with especially low rates of prevalent chronic conditions recorded among younger demographics. Furthermore, private health insurance coverage marginally surpasses typical SA2 standards, covering approximately 54% of residents (~5,519 people). Arthritis and asthma were identified as the two most widespread medical conditions locally, impacting 8.0 and 7.7% of residents, respectively, while 69.7% of the population reported no chronic conditions whatsoever, compared with 67.9% across Greater Adelaide. Health indicators among residents aged under 65 are particularly favorable.

The senior cohort aged 65 and over comprises 21.2% of the local population (2,167 people), above the 19.1% share recorded in Greater Adelaide, with local seniors displaying strong wellness indicators despite trailing national benchmarks relative to the wider community.

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

Marino - Seaview Downs displays an above-average level of cultural diversity, with overseas-born individuals making up 25.6% of the population and 13.0% speaking a non-English language in the home. Christianity represents the most widely held religious faith, encompassing 40.9% of residents. The most noticeable deviation in group representation appears in the Other religious category, accounting for 1.3% locally versus 1.8% throughout Greater Adelaide. Looking at ancestral background based on parental birthplaces, the primary heritages represented across Marino - Seaview Downs are English at 31.7%, Australian at 24.5%, and Irish at 7.2%.

Distinct concentrations also emerge across other ancestries, including German at 5.8% (against 5.1% regionally), Polish at 1.2% (compared to 1.0% across the region), and Welsh at 0.7% (relative 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. 22.7% 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 age distribution in Marino - Seaview Downs aligns fairly closely with wider metropolitan patterns, with the largest variance across broad age groups reaching 5.1 percentage points relative to Greater Adelaide. The estimated median age stands at 43, holding steady from the 2021 Census, which sits 4 years above Greater Adelaide's median of 39 and higher than the Australian median of 38 recorded during the same Census. Looking forward to 2041, senior demographics aged 65+ are anticipated to drive the bulk of local expansion, increasing by 279 residents (13%) to reach an aggregate of 2,447.

Frequently Asked Questions - Age

What is the median age in the Marino - Seaview Downs SA2?
AreaSearch estimates the median age in the Marino - Seaview Downs SA2 at 43 years as at August 2026. That is in line with the 2021 Census figure of 43 years, on an age profile AreaSearch re-estimates for population change recorded since the Census.
How does the Marino - Seaview Downs SA2's median age compare to broader areas?
At an estimated 43 years as at August 2026, Marino - Seaview Downs is 4 years older than the Greater Adelaide 2021 Census average (39 years) and 5 years older than the national Census average (38 years).
What age groups are over-represented in the Marino - Seaview Downs SA2?
On AreaSearch estimates updated to August 2026, 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?
On AreaSearch estimates updated to August 2026, 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 10.0% 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?
AreaSearch estimates children aged 0-14 years at 16.9% of the population in the Marino - Seaview Downs SA2 as at August 2026.
What is the percentage of older people (65+ years) in the Marino - Seaview Downs SA2?
AreaSearch estimates people aged 65 and over at 21.2% of the population in the Marino - Seaview Downs SA2 as at August 2026.

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) Aug 2026 last month 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 Aug 2026, with the 2021 Census supplying the small-area baseline.
Age profile ABS, Geoscience Australia, State governments Annual Aug 2026 last month headline measures · 2021 Census baseline
Age cohorts are re-based to the latest ABS population estimates and state projections, current to Aug 2026. Each cohort is held as a Census baseline and a current estimate.
Development & approvals ABS, GNAF Monthly (ABS approvals) Aug 2026 last month headline measures · Jun 2026 baseline
Property sales & rents Valuer General, Rental Board, ABS Weekly sales, quarterly rents Aug 2026 last 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 2 months ago 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 6 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 last month headline measures · 2021 Census baseline
Transport ABS, State Transport Departments Each timetable release Jul 2026 2 months ago headline measures · 2021 Census baseline
Services & amenities Provider directories, ACECQA Continuous Jul 2026 2 months ago 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 — 43 validated new addresses here. The headline figure is therefore a current estimate for Aug 2026, not a 2021 count (9,703 at the 2021 Census → 10,240 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 Aug 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 (Aug 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 Aug 2026), age profile (to Aug 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