Seacliff

Suburb (SAL)

Greater Adelaide / Holdfast Bay

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Data Sources ABSValuer GeneralRental BoardACARA Newest Oct 2026 · Refreshed ABS QuickStats SAL41311 How we calculate this
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Suburb (SAL) Boundary Analysis

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

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

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

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Sales ActivityProperty Sales Trends in Seacliff

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DemographicsPopulation Growth in Seacliff

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Seacliff has an estimated 2,115 residents. That puts 2,897 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's evaluation of broader ABS population revisions alongside address validations completed following the Census, the suburb of Seacliff has an estimated resident count of roughly 2,115 as of Aug 2026. This represents a contraction of 2 people (0.1%) compared to the 2,117 people recorded in the 2021 Census. This adjustment stems from an estimated resident base of 2,108 determined by AreaSearch after reviewing the ABS ERP release from June 2025 together with post-Census address tracking. With this total, the suburb of Seacliff registers a population density of 2,897 persons per square kilometer, placing the suburb within the top quartile of areas assessed nationally by AreaSearch.

Inbound international migration served as the primary catalyst for demographic expansion, representing virtually the exclusive contributor to local population additions in recent times. Projections published in 2024 by the ABS and Geoscience Australia using 2022 as a baseline are applied by AreaSearch across SA2 locations. For unrepresented SA2s as well as periods extending beyond 2032, projections by age bracket released in 2023 by the SA State Government utilizing 2021 figures are implemented through a population growth weighting methodology aggregated from LGA down to SA2 boundaries. Future demographic trajectories indicate that the suburb of Seacliff is slated to experience population expansion slightly beneath the national statistical area median, gaining 150 persons by 2041 under consolidated SA2 modelling, which equates to an overall rise of 6.8% across the 16 years.

Frequently Asked Questions - Population

What is the latest population estimate for the suburb of Seacliff?
Total population for the suburb of Seacliff was estimated to be approximately 2,115 as at Aug 26. This is based upon an estimated resident population of 2,108 from the ABS up to June 2025.
How has the population in the suburb of Seacliff changed since 2021?
The suburb of seacliff has lost approximately 2 people and shown a 0.09% decrease from the 2,117 people recorded at the 2021 Census period.
What is the population density in the suburb of Seacliff?
The population density in the suburb of Seacliff is estimated at 2,897 persons per square kilometer based on the latest population estimate.
How much has the population grown over the past 10 years in the suburb of Seacliff?
Over the past 10 years, the population in the suburb of Seacliff has shown a compound annual growth rate of 0.4% per annum.
What are the main drivers of population growth in the suburb of Seacliff?
Population growth in the suburb of Seacliff is driven by: Overseas migration (100.0%), Natural increase (0.0%), Interstate migration (0.0%). The primary driver is Overseas migration, contributing 100.0% of overall population gains.

Residential SupplyHousing Development & Building Approvals in Seacliff

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24 new dwellings have been approved in Seacliff over the past five years, an average of 4 a year. That is 1.4 approvals per 1,000 residents. Approvals are currently running at an annualised 1, well below that longer-run average. Figures come from ABS building approvals aggregated to this Suburb (SAL) boundary and are updated monthly as the ABS releases them.

Detail

Examining ABS residential approval figures distributed from statistical area metrics, AreaSearch indicates that annual residential approvals in Seacliff have averaged approximately 4 homes, reaching an estimated 24 homes across the preceding 5 financial years. Within FY-25 to date, 1 approvals have been documented. Because the local resident base experienced a slight decline recently, additions to housing stock have likely matched demand to provide adequate purchasing opportunities, with building costs averaging $679,000 per dwelling as builders focus on the upper tier of the market with higher-end residences. Furthermore, approved commercial building activity has reached $4.5 million in the current financial year, underscoring the area's predominantly residential character.

Residential building volumes in Seacliff remain substantially subdued when benchmarked against Greater Adelaide, sitting 78.0% below the per capita regional norm. This constrained delivery of new stock generally provides upward pressure on values and buyer interest across existing dwellings. Approvals also trail national benchmarks, reflecting an established locality that may face local planning constraints. The current composition of residential development stands at 67.0% standalone houses alongside 33.0% medium and high-density builds, with this expanding variety of medium-density formats offering options across varying price points, spanning traditional family properties to compact, accessible configurations. Generating around 2100 people per approval, Seacliff highlights the characteristics of a mature residential market. Long-term demographic forecasts anticipate Seacliff expanding by 143 residents by 2041 relative to the most recent quarterly calculation from AreaSearch. While residential building volume is tracking satisfactorily against projected growth, purchasers may face heightened market competition as local numbers expand.

Frequently Asked Questions - Development

How many dwelling approvals have occurred in the suburb of Seacliff recently?
Dwelling approval activity in the the suburb of Seacliff area has seen 1 residential approvals over the past two financial years, based on AreaSearch's SA2 aggregation method. The suburb of Seacliff's current population of 2,115 has been supported by 4 approvals on average over recent years.
How does the suburb of Seacliff's development activity compare to the broader region?
The suburb of Seacliff has seen 0.14 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 2100 people in the suburb of Seacliff, compared to one for every 122 in the broader region.
Is the suburb of Seacliff keeping up with housing demand?
With the population expected to increase by 143 people by 2041, around 72 new dwellings will be necessary. Recent approval levels may be insufficient to meet these forecasts, considering the census average of 2.0 persons per dwelling. This indicates potential housing shortages if current approval trends continue.
What has been the trend in development approvals over the past five years in the suburb of Seacliff?
Looking at development activity over the past five years, the suburb of Seacliff's approval levels have been significantly below the yearly average of 4, showing a notable downturn in recent development.
How many dwellings will be needed to accommodate future population growth in the suburb of Seacliff?
The population in the suburb of Seacliff is expected to grow by 143 people by 2041, necessitating approximately 72 new dwellings. This calculation is based on the current census average of 2.0 persons per dwelling in the area.
How does recent development compare to population growth in the suburb of Seacliff?
Over the past five years, the population in the suburb of Seacliff has grown by approximately 270 people, while 24 residential approvals were recorded. This equates to a ratio of 11.2 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 suburb of Seacliff?
With dwelling approval activity running at an average of 4 approvals per year and a population of 2,115, there appears to be a supply shortfall relative to projected demand, presenting strong opportunities for residential developers. With the population expected to increase by 143 people by 2041, around 72 new dwellings will be necessary. Current approval trends may be insufficient to meet forecast demand, indicating strong development opportunities.
Approvals Pipeline Development applications near Seacliff

Development applications around Seacliff

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 Seacliff

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AreaSearch tracks 9 current infrastructure and development projects close to Seacliff, worth an estimated $518 million. 4 are already under construction and 2 are due for completion within three years. The pipeline spans residential development, education & training and retail. Records are compiled from Infrastructure Australia, state agencies, council planning portals and public announcements, reviewed and updated daily, then ranked by proximity, construction stage, completion horizon and project scale.

Detail

Strategic planning initiatives, major transport undertakings, and changes in local infrastructure exert a profound influence on an area's trajectory. In total no major capital projects have been identified by AreaSearch as having a direct local impact on the locality. Significant regional initiatives comprise SA Water Capital Work Delivery Contracts 2024-28, North South Corridor, Adelaide's Inner And Outer Ring Route Capacity Improvements, and Adelaide Public Transport Capacity and Access, with those carrying primary relevance outlined below.

Professional plan users can use the search below to filter and access additional projects.

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Frequently Asked Questions - Infrastructure

What are some of the major infrastructure and planning changes likely to influence the suburb of Seacliff?
Key infrastructure and planning changes likely to influence the suburb of Seacliff include: Adelaide Public Transport Capacity and Access (Planning); Adelaide's Inner And Outer Ring Route Capacity Improvements (Proposed); North South Corridor (Construction); SA Water Capital Work Delivery Contracts 2024-28 (Construction); and SA Housing Trust Maintenance Contracts Review and Service Program (Construction). These projects represent significant developments that will shape the area's future infrastructure landscape.
What types of infrastructure projects are impacting the suburb of Seacliff?
Infrastructure development impacting the suburb of Seacliff spans multiple sectors including Transport & Logistics, Environmental & Disaster Management, and Telecommunications, among others.
What is the scale of infrastructure investment impacting the suburb of Seacliff?
Infrastructure investment analysis indicates substantial capital deployment exceeding $1.1 billion in projects that will impact the extended area.
How does the suburb of Seacliff's infrastructure development compare to other areas?
Infrastructure development activity impacting the suburb of Seacliff currently ranks below national averages at the 19thth 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

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

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

Oaklands Green
Category: Residential Development
Stage: Construction | Est. Comp: 2030

South Australia's largest social and affordable housing renewal project, transforming 16.5 hectares into a masterplanned community. The development delivers 680 new dwellings, comprising 235 social housing homes managed by Junction and 445 private/affordable homes. The project features 3.4 hectares of open space, including the expansion of Rajah Reserve and sustainable Green Star rated designs. Construction is staged over eight years with the first residents moved in during 2023.

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

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

Marion Cultural Centre Plaza Upgrade
Category: Arts & Culture
Stage: Completed | Est. Comp: 2024
Source / Links: Link 1   Link 2  

The Marion Cultural Centre Plaza has been redeveloped to become a vibrant heart for the city, providing a space for community gatherings, celebrations, relaxation, and support for local businesses. The upgrade includes surface treatments, soft landscaping, tree planting, public art installations, and a new pedestrian crossing on Warracowie Way. It aims to enhance amenity with green spaces, strengthen community connections, offer flexibility for various functional uses, and create a sense of place aligned with the council's vision of a liveable, nature-valuing, engaged, connected, innovative, and prosperous community.The project also improved pedestrian and cyclist connectivity, safety, and amenity, linking local residential areas, Oaklands Station, MCC, SA Aquatic and Leisure Centre, Westfield, and other facilities on Milham Street, while retaining vehicle access to existing businesses and managing traffic.

Arts & Culture

Jobs & IndustryEmployment Trends in Seacliff

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1,182 residents of Seacliff are employed, from a labour force of 1,214. Unemployment sits at 2.6%, with participation at 67.4%. 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 1,672, about 79% 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

Seacliff possesses a highly educated workforce, with essential services sectors well represented, an unemployment rate of just 2.6%, and 3.7% in estimated employment growth over the past year, based on AreaSearch aggregation of statistical area data. As of March 2026, 1,182 residents are in work while the unemployment rate is 1.2% below Greater Adelaide's rate of 3.8%, and workforce participation is broadly similar to Greater Adelaide's 66.4%. Based on Census responses, a moderate 18.7% of residents were found to work from home, though Covid-19 lockdown impacts should be considered. Local workforce participation is heavily weighted toward professional & technical roles, health care & social assistance, and education & training.

The community shows a distinctive concentration within education & training, generating a sector employment share 1.4 times greater than the wider metropolitan benchmark. Conversely, manufacturing claims a smaller footprint locally at 5.5% versus 7.0% across the region. As reflected by the variance between local resident worker numbers and the Census working population, this predominantly residential community offers limited internal employment positions. According to AreaSearch's compilation of ABS and SALM figures from broader surrounding zones, the year leading to March 2026 saw local employment rise by 3.7% and the overall labour pool grow by 3.4%, contributing to a 0.3 percentage point drop in the unemployment rate. Over the identical timeframe, Greater Adelaide saw employment lift by 4.2%, the workforce expand by 4.0%, and joblessness decline by 0.2 percentage points. Further context regarding long-term staffing requirements in Seacliff is provided by Jobs and Skills Australia's Mar-26 national employment outlooks. These five- and ten-year models have been aligned with local industry distributions to evaluate prospective expansion. Across Australia, workforce gains are expected to reach 6.6% over five years and 13.7% over ten years, with considerable variation across individual sectors. Applying these specific industry trajectories to the resident employment profile indicates that local workforce opportunities could expand by 6.9% across five years and 14.2% across ten years (noting this calculation represents an illustrative weighted extrapolation that excludes localized demographic projections).

Frequently Asked Questions - Employment

What is the employment situation in the suburb of Seacliff?
As of March 2026, the suburb of Seacliff has approximately 1,182 employed residents with an unemployment rate of 2.6%. 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 suburb of Seacliff's unemployment rate compare to the broader region?
As of March 2026, the unemployment rate in the suburb of Seacliff stands at 2.6%, which is 1.2 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 suburb of Seacliff?
The employment landscape in the suburb of Seacliff is dominated by several key sectors. The largest employers are health care & social assistance (18.8% of employment), education & training (13.2%), and professional & technical (9.5%). Other significant employers include retail trade and public administration & safety.
How has employment changed recently in the suburb of Seacliff?
Over the past year to March 2026, the suburb of Seacliff has experienced employment growth, with total employment increasing while the labour force increased. As a result, the unemployment rate has fall. By comparison, Greater Adelaide saw employment increased and its unemployment rate dropped.
What is the workforce participation rate in the suburb of Seacliff?
The workforce participation rate in the suburb of Seacliff is 67.4%, 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 suburb of Seacliff's employment market?
The suburb of seacliff shows notable specialization in education & training, which employs 13.2% of the local workforce compared to 9.3% regionally. This moderate specialization indicates some local strength in the sector. The area also shows above-average employment in 1 other sectors, contributing to a distinctive economic profile.
What are the employment growth prospects for the suburb of Seacliff?
Based on Jobs and Skills Australia projections applied to the suburb of Seacliff'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 suburb of Seacliff compare nationally?
The suburb of seacliff'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 suburb of Seacliff?
Skilled workers will find excellent opportunities in the suburb of Seacliff, with knowledge-intensive sectors comprising 45.9% of local employment. Key sectors for skilled workers include health care & social assistance (18.8%), education & training (13.2%), and professional & technical (9.5%). With projected employment growth of 6.9% over five years, demand for skilled workers is expected to remain strong.

EarningsHousehold Income in Seacliff

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Median household income in Seacliff is $1,931 a week (about $100,000 a year), with median personal income at $948 a week. ATO records put median taxable income at $62,396 a year against an average of $82,993. 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

Aggregated ATO figures compiled by AreaSearch for financial year 2023 place taxpayer income levels in the suburb of Seacliff among the upper echelons across Australia. Taxpayers in the suburb of Seacliff record a median earnings figure of $62,396 and an average of $82,993, surpassing the Greater Adelaide metrics of $54,808 and $66,852. Factoring in Wage Price Index growth of 10.17% following financial year 2023, present values correspond to roughly $68,742 for median earnings and $91,433 on average as of March 2026. Findings from the 2021 Census indicate that personal, family, and household earnings align around the 67th percentile nationally.

Distribution across earnings tiers shows the largest cohort earning $1,500 - 2,999 weekly, accounting for 29.7% (628 residents), mirroring the regional rate of 31.8%. High economic capacity is evident with 30.2% of residents generating weekly earnings above $3,000, which underpins demand for higher-end services and retail. Following residential expenses, households keep 87.7% of gross receipts, demonstrating robust discretionary capacity alongside an 8th decile SEIFA income position.

Frequently Asked Questions - Income

What is the median taxable income in the suburb of Seacliff?
Based on Wage Price Index adjustments to March 2026, the estimated median taxable income in the suburb of Seacliff is approximately $68,742. The official ATO data from FY-23 recorded a median of $62,396.
What is the average taxable income in the suburb of Seacliff?
Based on Wage Price Index adjustments to March 2026, the estimated average taxable income in the suburb of Seacliff is approximately $91,433. The official ATO data from FY-23 recorded an average of $82,993.
How does the median taxable income in the suburb of Seacliff compare to the region?
Based on Wage Price Index adjustments to March 2026, the estimated median taxable income in the suburb of Seacliff is approximately $68,742 compared to $60,382 in Greater Adelaide. The official ATO data from FY-23 shows $62,396 and $54,808 respectively.
How does the average taxable income in the suburb of Seacliff compare to the region?
Based on Wage Price Index adjustments to March 2026, the estimated average taxable income in the suburb of Seacliff is approximately $91,433 compared to $73,651 in Greater Adelaide. The official ATO data from FY-23 shows $82,993 and $66,852 respectively.
What are the main income cohorts in the suburb of Seacliff according to the 2021 Census?
As per the 2021 Census, the income bracket containing the largest proportion (~29.7% / 628 persons) of the suburb of Seacliff's population is the $1,500 - 2,999 cohort.
How do the main income cohorts in the suburb of Seacliff compare to the region?
The largest income cohort in the suburb of Seacliff is the $1,500 - 2,999 group, representing about 29.7% of the population. In comparison, Greater Adelaide's largest income cohort is the $1,500 - 2,999 group, representing 31.8% of its population, according to the 2021 Census.
What is the median household income in the suburb of Seacliff according to the 2021 Census?
The 2021 Census data indicates that the median household income in the suburb of Seacliff is $1,931/wk.
What is the median family income in the suburb of Seacliff according to the 2021 Census?
According to the 2021 Census, the median family income in the suburb of Seacliff is $2,364/wk.
What is the median personal income in the suburb of Seacliff according to the 2021 Census?
The 2021 Census shows that the median personal income in the suburb of Seacliff is $948/wk.
How does the suburb of Seacliff's income rank nationally?
The suburb of Seacliff's income level is extremely high nationally according to the latest ATO data aggregated by AreaSearch for FY-23. The suburb of Seacliff's median income among taxpayers is $62,396 and the average income stands at $82,993, which compares to figures for Greater Adelaide's of $54,808 and $66,852 respectively. Based on Wage Price Index growth of 10.17% since FY-23, current estimates would be approximately $68,742 (median) and $91,433 (average) as of March 2026.
What is the disposable income in the suburb of Seacliff?
The estimated disposable income in the suburb of Seacliff is $7,341 per year according to AreaSearch analysis.
How does the suburb of Seacliff's disposable income compare to the region?
The suburb of seacliff's disposable income is $7,341 compared to $5,698 for Greater Adelaide, based on AreaSearch analysis.

Housing StockHousing & Dwellings in Seacliff

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Seacliff had 846 occupied dwellings at the 2021 Census, 66% detached houses and 14% apartments. 34% are owned with a mortgage, 25% rented and 42% owned outright. At that Census the median rent was $350 a week and the median mortgage repayment $1,950 a month. Rent absorbs 18.1% of household income here and mortgage repayments 23.3%. 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 composition of residential stock in Seacliff consisted of 66.3% separate houses and 33.8% alternative formats including semi-detached residences, apartments, and other configurations, whereas Adelaide metro recorded 75.2% houses and 24.9% other property types. Fully owned properties accounted for 41.8% of dwellings, notably outpacing the metropolitan rate, while the remainder were distributed between properties under mortgage (33.5%) and rental tenure (24.6%). Typical monthly mortgage commitments stood at $1,950, well above the Adelaide metro standard of $1,562, while median weekly rents were $350 compared to $320 regionally.

On a nationwide scale, mortgage payments in Seacliff exceed the Australian benchmark of $1,863, whereas rental costs remain below the countrywide level of $375.

Frequently Asked Questions - Housing

What percentage of homes are owned vs rented in the suburb of Seacliff?
In the suburb of Seacliff, 41.8% of homes are owned outright, 33.5% are owned with a mortgage, and 24.6% are rented.
What percentage of dwellings in the suburb of Seacliff are houses?
According to the latest data, 66.3% of dwellings in the suburb of Seacliff are houses.
What percentage of dwellings in the suburb of Seacliff are apartments or units?
In the suburb of Seacliff, 13.5% of dwellings are apartments or units, with an additional 19.9% being semi-detached dwellings.
What is the level of outright home ownership in the suburb of Seacliff?
Outright home ownership in the suburb of Seacliff stands at 41.8%, compared to 32.1% in Greater Adelaide.
What is the median monthly mortgage repayment in the suburb of Seacliff?
The median monthly mortgage repayment in the suburb of Seacliff is $1,950, compared to $1,562 in Greater Adelaide.
What is the median weekly rent in the suburb of Seacliff?
The median weekly rent in the suburb of Seacliff is $350, compared to $320 in Greater Adelaide.
What is the distribution of rental prices in the suburb of Seacliff?
In the suburb of Seacliff, 0.0% of rentals are $0-149/week, 44.7% are $150-349/week, 45.7% are $350-649/week, 9.6% are $650-949/week, and 0.0% are $950+/week.
What is the average monthly housing cost in the suburb of Seacliff?
The aggregate monthly housing cost in the suburb of Seacliff is $1,026, which represents the average monthly cost across all housing types.
What percentage of income do residents spend on housing in the suburb of Seacliff?
In the suburb of Seacliff, households with mortgages typically spend 23.3% of their income on mortgage repayments, while renters spend 18.1% of their income on rent.
How crowded are homes in the suburb of Seacliff?
The average persons per bedroom ratio in the suburb of Seacliff is 0.8, indicating the level of household density.
How does housing affordability in the suburb of Seacliff compare to the region?
Housing affordability in the suburb of Seacliff shows mortgage holders spending 23.3% of income on repayments (vs 23.3% regionally), while renters spend 18.1% of income on rent (vs 20.7% regionally).
What types of dwellings are most common in the suburb of Seacliff?
The dwelling mix in the suburb of Seacliff consists of 66.3% detached houses, 19.9% semi-detached dwellings, 13.5% apartments, and 0.4% other dwelling types.
What is the weighted average housing cost based on tenure mix in the suburb of Seacliff?
Considering the housing occupancy patterns, the weighted average monthly housing cost is approximately $1,026. This accounts for outright owners paying no housing costs, mortgage holders paying $1,950/month, and renters paying $1,516/month.
How affordable is housing in the suburb of Seacliff relative to local incomes?
Housing in Seacliff consumes approximately 12.3% of median household income ($8,361 monthly), indicating costs are highly affordable. The generally accepted benchmark is that housing should not exceed 30% of household income.
How do proposed developments compare to existing housing types in the suburb of Seacliff?
Development activity remains minimal in this area with fewer than 5 recent applications recorded.

HouseholdsHousehold Composition in Seacliff

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Seacliff counted 846 households at the 2021 Census, averaging 2.4 people each. 29% are couples with children, against 34% couples without children. 24% of households are people living alone, and families average 1.5 children. Household and family composition is measured only by the Census, so these are 2021 figures.

Detail

Families constitute the prevailing living arrangement at 72.9% of all households, with couples without children representing 34.1%, couples with children making up 28.7%, and single parent families accounting for 10.1%. The remaining 27.1% is comprised of non-family living situations, including lone person residences at 24.2% and group living arrangements at 2.4%. With a median of 2.4 people, household size is slightly lower than the Greater Adelaide figure of 2.5.

Frequently Asked Questions - Households

How many households are in the suburb of Seacliff?
As of the 2021 Census, the suburb of Seacliff had 846 households. Based on population growth patterns, this has remained relatively stable to an estimated 845 households today.
What is the typical household size?
The median household size in the suburb of Seacliff is 2.4 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 72.9% of all households. The remaining households consist of lone person households (24.2%), group households (2.4%), and other household types (0.5%).
How are families structured in the area?
Among the 616 family households, 28.7% are couples with children, 34.1% are couples without children at home, and 10.1% are single parent families. This mix shapes local demand for schools, family services, and housing types.
How does the suburb of Seacliff compare to regional household patterns?
Compared to Greater Adelaide, the suburb of Seacliff shows distinct household patterns. This family-oriented profile influences local demand for family homes, schools, and children's services.
What is the average family size?
Families in the suburb of Seacliff have an average of 1.5 children, matching the Greater Adelaide average of 1.5. This influences local demand for child-related services and larger family homes.
What are the marriage patterns in the suburb of Seacliff?
Marriage patterns reveal 52.0% of the adult population are currently married, while 30.6% have never married. This compares to 45.7% married and 36.4% never married across Greater Adelaide.
How significant are single-person households?
Single-person households represent 24.2% of all households in the suburb of Seacliff, similar to 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 2.4% 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 Seacliff

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43.5% of adults in Seacliff hold a university qualification, including 27.7% with a bachelor degree and 11.4% with postgraduate qualifications, higher than 87% of areas nationally. A further 17.8% hold a vocational qualification. 1 school serves the area, with 378 enrolment places and an average ICSEA of 1,093 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 qualification levels in Seacliff markedly outshine broader state and regional benchmarks, as 43.5% of people aged 15+ hold a university degree compared with 28.1% across the SA4 region and 25.7% in SA. This distinct academic profile provides the community with strong advantages in knowledge-focused industries. Qualifications are led by bachelor degrees at 27.7%, alongside postgraduate degrees at 11.4% and graduate diplomas at 4.4%. Vocational and technical education is likewise well represented, with 30.1% of residents aged 15+ holding trade or technical credentials, encompassing 17.8% with certificates and 12.3% with advanced diplomas.

Active learning participation is prominent throughout the community, with 26.1% of the population engaged in formal study. This comprises 8.2% attending primary school, 6.9% in secondary education, and 6.2% undertaking tertiary studies.

Frequently Asked Questions - Education

What percentage of people in the suburb of Seacliff have university qualifications?
43.5% of people aged 15 and over in the suburb of Seacliff have university qualifications, compared to 28.9% in the broader region.
What percentage of people in the suburb of Seacliff have no formal qualifications?
26.6% of people aged 15 and over in the suburb of Seacliff have no formal qualifications, compared to 39.0% regionally.
How does the suburb of Seacliff's education level compare to national averages?
The suburb of seacliff ranks in the 87th percentile nationally for education based on AreaSearch's analysis of qualification and performance metrics.
What types of qualifications are most common in the suburb of Seacliff?
The most common qualifications in the suburb of Seacliff are: Bachelor Degree (27.7%), Certificate (17.8%), Advanced Diploma (12.3%).
What proportion of the suburb of Seacliff's population is currently attending educational institutions?
26.1% of the population in the suburb of Seacliff is currently engaged in formal education, with 8.2% in primary school, 6.9% in secondary school, 6.2% at university.
What is the ICSEA score for schools in the suburb of Seacliff?
The average ICSEA (Index of Community Socio-Educational Advantage) score for schools in the suburb of Seacliff is 1093, indicating average socio-educational advantage (national average is 1000).
How many schools are located within the suburb of Seacliff?
There are 1 schools within the suburb of Seacliff, with a combined enrollment of approximately 378 students.
What types of schools are available in the suburb of Seacliff?
The suburb of seacliff includes 1 primary school.

Schools Detail

AmenitiesServices & Amenities in Seacliff

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Getting AroundTransport & Commuting in Seacliff

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Public transport in Seacliff reaches 13 stops on 11 routes, timetabled for about 1,100 services a week. The typical home sits about 170 m from its nearest stop. Buses carry the largest share of public transport commuters. Households keep an average of 1.4 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 Seacliff is supported by 13 active transit stops spanning bus and train services. Operating across 11 distinct transit lines, these facilities provide 1,123 weekly passenger trips. Transit accessibility rates as outstanding, with residents situated an average of 169 meters from their closest transport facility. Reflecting the area's residential profile, outbound travel dominates daily transit, with private motor vehicles accounting for 84% of commuter journeys and trains carrying 10%. Household motor vehicle ownership stands at 1.4 per dwelling on average. Additionally, 18.7% of employed locals conducted their work from home during the 2021 Census, a figure potentially influenced by COVID-19 settings.

Transit services maintain an average operating volume of 160 trips per day across all available lines, delivering roughly 86 weekly trips for each stop location.

Frequently Asked Questions - Transport

How many public transport stops are in Seacliff?
There are 13 public transport stops within the suburb of Seacliff.
How frequent are the transport services in Seacliff?
the suburb of Seacliff has 1,123 weekly trips across 11 routes, averaging 160 trips per day.
How far are residents from public transport in Seacliff?
On average, residential properties are 169 meters from the nearest transport stop.

Transport Stops Detail

HealthcareHealth Services in Seacliff

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67.7% of residents in Seacliff report no long-term health condition, a healthier profile than 84% of areas nationally. 3.8% need daily assistance with core activities, and 59.8% hold private health cover. The standardised death rate runs at 3.4 per 1,000 residents. Health conditions, assistance needs and insurance are 2021 Census measures; the death rate comes from current ABS releases.

Detail

Evaluations of chronic illness and mortality rates by AreaSearch indicate excellent health measures across Seacliff, characterized by a minimal occurrence of standard medical conditions throughout all age brackets. Furthermore, private healthcare coverage is exceptionally widespread, encompassing roughly 60% of residents (1,263 people), exceeding the Greater Adelaide proportion of 52.7%. Arthritis and mental health conditions represent the primary recorded medical diagnoses in the locality, affecting 9.5 and 7.5% of the community respectively, while 67.7% of residents reported having no long-term illnesses, closely matching the Greater Adelaide figure of 67.9%. Health indicators across the working-age cohort track regional norms.

Seniors aged 65 and over constitute 23.4% of the population (494 people), higher than the 19.1% share recorded across Greater Adelaide. Wellbeing outcomes among older residents are notably strong, with nationwide performance metrics aligning with general population distributions.

Frequently Asked Questions - Health

How many people in the suburb of Seacliff have private health insurance?
Around 59.8% of people in the suburb of Seacliff are covered by private health insurance, which compares to 52.7% in the broader region of Greater Adelaide.
What percentage of the population requires ongoing medical assistance in the suburb of Seacliff?
In the suburb of Seacliff, 3.8% of the population is identified as requiring ongoing medical assistance. This figure is slightly different from the regional average, where 6.6% of people in Greater Adelaide require similar assistance.
How prevalent is asthma in the suburb of Seacliff?
7.3% of people in the suburb of Seacliff are diagnosed with asthma. In comparison, 7.7% of the population across Greater Adelaide is affected by asthma.
What percentage of people have diabetes in the suburb of Seacliff?
Diabetes affects 3.1% of the the suburb of Seacliff population, while in the surrounding region, 4.8% of people are diagnosed with diabetes.
What is the percentage of people with heart disease in the suburb of Seacliff?
4.2% of people in the suburb of Seacliff have heart disease. Across the region of Greater Adelaide, 3.8% of the population is affected by heart disease.
How does the suburb of Seacliff compare to the region in terms of overall private health coverage?
In the suburb of Seacliff, 59.8% 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 Seacliff

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Seacliff is largely Australian-born, at 76.2% of residents, with 8.1% speaking a language other than English at home. The largest reported ancestries are English (33.7%) and Australian (22.5%). Ancestry, language and country of birth are counted only by the Census, so these are 2021 figures.

Detail

Measures of cultural diversity across Seacliff track closely with the broader metropolitan standard, with 76.2% of the local population Australian-born, 89.7% holding Australian citizenship, and 91.9% speaking exclusively English in domestic settings. Christianity represents the leading religious affiliation, observed by 41.4% of residents. The most noticeable variation is seen in Islam, which accounts for 0.7% of the populace locally compared with 3.0% across Greater Adelaide. In terms of parental heritage and ancestry, the three most common backgrounds among Seacliff residents are English at 33.7% (notably above the metropolitan figure of 27.8%), Australian at 22.5%, and Irish at 8.8%.

Additional distinct variations in cultural representation include residents of German background at 5.9% (vs 5.1% regionally), Polish at 1.3% (vs 1.0%), and Welsh at 0.8% (vs 0.6%).

Frequently Asked Questions - Diversity

What is the level of cultural diversity in the suburb of Seacliff?
Seacliff was found to be roughly in line with the wider region's average in terms of cultural diversity, with 76.2% of its population born in Australia, 89.7% being citizens, and 91.9% speaking English only at home.
What is the most common religion in the suburb of Seacliff?
The main religion in Seacliff was found to be Christianity, which makes up 41.4% of people in Seacliff. However, the most apparent overrepresentation was in Islam, which comprises 0.7% of the population, compared to 3.0% across Greater Adelaide.
What are the top countries of origin in the suburb of Seacliff?
In terms of ancestry (country of birth of parents), the top three represented groups in Seacliff are English, comprising 33.7% of the population, which is substantially higher than the regional average of 27.8%, Australian, comprising 22.5% of the population, and Irish, comprising 8.8% of the population. Additionally, there are notable divergences in the representation of certain other ethnic groups: Polish is notably overrepresented at 1.3% of Seacliff (vs 1.0% regionally), Welsh at 0.8% (vs 0.6%) and German at 5.9% (vs 5.1%).
How does the percentage of people born overseas compare to the regional average?
23.8% of the the suburb of Seacliff population was born overseas, compared to 28.7% regionally.
What percentage of the the suburb of Seacliff population speaks a language other than English at home?
8.1% of the population in the suburb of Seacliff speaks a language other than English at home, compared to 22.2% in the wider region.
How many people in the suburb of Seacliff identify as Australian Aboriginal?
0.6% of the the suburb of Seacliff population identifies as Australian Aboriginal, compared to 1.2% in the region.
What is the citizenship status of the population in the suburb of Seacliff?
89.7% of the the suburb of Seacliff population holds citizenship, compared to 86.3% in the wider region.

Age StructureAge Profile of Seacliff

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The median resident of Seacliff is 46, older than 82% of areas nationally. 22.5% 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 demographic profile of Seacliff skews older relative to Greater Adelaide overall. As at August 2026, seniors and retirees (65+) constitute 23.4% of the local population compared to 19.1% across the metropolitan area, while young to middle aged adults (25 - 44) account for 23.7% against a regional benchmark of 28.9%. AreaSearch places the median age at 46 as at August 2026, matching the 2021 Census metric, which sits 7 years older than the Greater Adelaide median of 39 and well above the Australian median of 38 from that Census.

Since the Census, the cohort of middle aged persons and early retirees (45 - 64) has declined from 29.0% to an estimated 27.1%. Projections to 2041 suggest that retirees and elderly residents will drive the majority of local demographic growth, increasing by 72 residents (15%) to reach 567.

Frequently Asked Questions - Age

What is the median age in the suburb of Seacliff?
AreaSearch estimates the median age in the suburb of Seacliff at 46 years as at August 2026. That is in line with the 2021 Census figure of 46 years, on an age profile AreaSearch re-estimates for population change recorded since the Census.
How does the suburb of Seacliff's median age compare to broader areas?
At an estimated 46 years as at August 2026, Seacliff is 7 years older than the Greater Adelaide 2021 Census average (39 years) and 8 years older than the national Census average (38 years).
What age groups are over-represented in the suburb of Seacliff?
On AreaSearch estimates updated to August 2026, the most over-represented age group in the suburb of Seacliff compared to the Greater Adelaide region is the 65 - 74 group, making up 14.5% of the population.
What age groups are under-represented in the suburb of Seacliff?
On AreaSearch estimates updated to August 2026, the most under-represented age group in the suburb of Seacliff compared to the Greater Adelaide region is the 25 - 34 group, making up 11.2% of the population.
Are there age groups with notable population variances?
Yes, certain age groups in the suburb of Seacliff show significant variance compared to the Greater Adelaide region. The most over-represented age group is 65-74 year-olds (14.5% vs 9.8%). The most under-represented age group is 85+ year-olds (1.2% vs 2.6%).
What is the percentage of children (0-14 years) in the suburb of Seacliff?
AreaSearch estimates children aged 0-14 years at 15.5% of the population in the suburb of Seacliff as at August 2026.
What is the percentage of older people (65+ years) in the suburb of Seacliff?
AreaSearch estimates people aged 65 and over at 23.4% of the population in the suburb of Seacliff as at August 2026.

Data & MethodBoundaries, Sources & Method for Seacliff

Data currency Refreshed

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

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

The ledger — source, cycle and currency by section

Section Source & update cycle Currency
Updated within the last 12 months 9 sections
Population ABS, GNAF, Geoscience Australia Annual (ABS ERP) Aug 2026 2 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 Aug 2026, with the 2021 Census supplying the small-area baseline.
Age profile ABS, Geoscience Australia, State governments Annual Aug 2026 2 months ago 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 2 months ago headline measures · Jul 2026 baseline
Property sales & rents Valuer General, Rental Board, ABS Weekly sales, quarterly rents Oct 2026 this month headline measures · Sep 2026 baseline
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 Oct 2026.
Infrastructure projects Infrastructure Australia, Local governments Daily May 2026 5 months ago all 2 projects tracked here
Project pipeline maintained continuously from Infrastructure Australia, state agencies, local government and public announcements. Records are added and revised daily; this area was last updated May 2026.
Employment ABS, DEWR, JSA Quarterly (ABS SALM) Mar 2026 7 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) Sep 2026 last month headline measures · 2021 Census baseline
Transport ABS, State Transport Departments Each timetable release Jul 2026 3 months ago headline measures · 2021 Census baseline
Services & amenities Provider directories, ACECQA Continuous Sep 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. The headline figure is therefore a current estimate for Aug 2026, not a 2021 count (2,117 at the 2021 Census → 2,115 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 (SAL41311). QuickStats reports 2021 only — the figures on this page are more current wherever the ledger shows a later date.

Common questions about this page

How do Seacliff suburb boundaries differ from Statistical Areas?
This page uses Suburbs and Localities (SAL) boundaries (suburb-style geography). SAL represents commonly-known suburb names used in addresses, while Statistical Areas (SA2) are designed for census/statistical reporting. Even when sharing the same name, SAL and SA2 boundaries often cover different geographic areas with different populations.
Where does the data on this Seacliff 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 Seacliff 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 (Oct 2026), infrastructure projects (May 2026) and services & amenities (Sep 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 Sep 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