Largs Bay - Semaphore

SA2

Greater Adelaide / Port Adelaide - West

 
 
 
 
 
 
 
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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 Largs Bay - Semaphore

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DemographicsPopulation Growth in Largs Bay - Semaphore

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Largs Bay - Semaphore has an estimated 15,778 residents, up from 14,807 at the 2021 Census — a change of 971 people, or 6.6%. Growth has averaged 1.0% a year over five years. 298 new addresses have been validated here since Census night. Overseas migration accounts for 65.3% of that increase. That puts 2,348 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 Largs Bay - Semaphore is estimated to be 15,778 as of May 2026. This represents a growth of 971 people (6.6%) from the 14,807 people recorded during the 2021 Census. This population shift is calculated using the ABS estimated resident population of 15,765 from June 2025 alongside 298 validated new addresses identified since the Census. With these figures, the density of the area stands at 2,347 persons per square kilometer, placing it in the top quarter of all Australian locations analyzed.

The 6.6% post-census growth rate of Largs Bay - Semaphore is within 0.9 percentage points of the 7.5% state average, indicating competitive expansion. Overseas migration was the primary driver of this population growth, accounting for approximately 65.3% of the total demographic increase in recent times. Projections from ABS and Geoscience Australia, published in 2024 with a 2022 baseline, are utilized for each SA2 region. For SA2 areas lacking this data, as well as for the period after 2032, regional and LGA projections by age group released by the SA State Government in 2023 (utilizing 2021 data) are applied, adjusted using a weighted aggregation of population growth from LGA to SA2 levels. Future demographic patterns suggest a population rise slightly below the national median, with the locality projected to add 1,084 residents by 2041 relative to the most recent annual ERP statistics, representing a total increase of 6.8% over the 16 years.

Frequently Asked Questions - Population

What is the latest population estimate for the Largs Bay - Semaphore SA2?
Total population for the Largs Bay - Semaphore SA2 was estimated to be approximately 15,778 as at May 26. This is based upon an estimated resident population of 15,765 from the ABS up to June 2025.
How has the population in the Largs Bay - Semaphore SA2 changed since 2021?
The largs bay - semaphore sa2 has added approximately 971 people and shown a 6.56% increase from the 14,807 people recorded at the 2021 Census period.
What is the population density in the Largs Bay - Semaphore SA2?
The population density in the Largs Bay - Semaphore SA2 is estimated at 2,347 persons per square kilometer based on the latest population estimate.
How much has the population grown over the past 10 years in the Largs Bay - Semaphore SA2?
Over the past 10 years, the population in the Largs Bay - Semaphore SA2 has shown a compound annual growth rate of 0.6% per annum.
What are the main drivers of population growth in the Largs Bay - Semaphore SA2?
Population growth in the Largs Bay - Semaphore SA2 is driven by: Overseas migration (65.3%), Interstate migration (34.7%), Natural increase (0.0%). The primary driver is Overseas migration, contributing 65.3% of overall population gains.

Residential SupplyHousing Development & Building Approvals in Largs Bay - Semaphore

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446 new dwellings have been approved in Largs Bay - Semaphore over the past five years, an average of 89 a year. That places the area in the 70th percentile for residential development activity nationally, about 6 approvals per 1,000 residents a year. Of the 79 dwellings approved in the latest reporting year, 34% were detached houses and the rest townhouses or apartments. Approvals are currently running at an annualised 188, running ahead of that longer-run average. Figures come from ABS building approvals aggregated to this SA2 boundary and are updated monthly as the ABS releases them.

Detail

On average, Largs Bay - Semaphore has recorded about 89 new residential approvals annually, totaling 446 dwelling approvals over the last 5 financial years (between FY-21 and FY-25) and 173 during FY-26 so far. With an average of 1.8 new residents moving in per approved home over the past 5 financial years (between FY-21 and FY-25), supply is closely aligned with demand, supporting a balanced market, with new dwellings being built at an average cost of $271,000. Furthermore, commercial approvals valued at $14.9 million have been logged in the current financial year, indicating a moderate level of business development.

In comparison to Greater Adelaide, the per capita rate of new residential approvals in Largs Bay - Semaphore is roughly three-quarters as high, placing it in the 65th percentile of areas evaluated nationwide. Recent construction activity consists of 34.0% detached dwellings and 66.0% attached dwellings. This orientation toward higher-density housing options provides more affordable paths to entry, drawing downsizers, investors, and first-time buyers. This represents a major shift from the established housing stock (which currently stands at 70.0% houses), pointing to a scarcity of greenfield development sites and responding to changing preferences and affordability constraints. Reflecting a growing market, Largs Bay - Semaphore averages approximately 286 people for every approved dwelling. Demographic projections indicate that Largs Bay - Semaphore is set to add 1,071 residents by 2041 (compared against the most recent quarterly estimate from AreaSearch). Under current building trends, the incoming supply of housing should easily satisfy this demand, creating favorable buying conditions and potentially allowing population growth to surpass existing forecasts.

Frequently Asked Questions - Development

How many dwelling approvals have occurred in the Largs Bay - Semaphore SA2 recently?
Dwelling approval activity in the the Largs Bay - Semaphore SA2 area has seen 144 residential approvals over the past two financial years, based on AreaSearch's SA2 aggregation method. The Largs Bay - Semaphore SA2's current population of 15,778 has been supported by 89 approvals on average over recent years.
How does the Largs Bay - Semaphore SA2's development activity compare to the broader region?
The Largs Bay - Semaphore SA2 has seen 0.59 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 286 people in the Largs Bay - Semaphore SA2, compared to one for every 144 in the broader region.
Is the Largs Bay - Semaphore SA2 keeping up with housing demand?
With the population expected to increase by 1,071 people by 2041, around 536 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 Largs Bay - Semaphore SA2?
Looking at development activity over the past five years, the Largs Bay - Semaphore SA2's approval levels have been significantly above the yearly average of 89, indicating strong recent growth in development activity.
How many dwellings will be needed to accommodate future population growth in the Largs Bay - Semaphore SA2?
The population in the Largs Bay - Semaphore SA2 is expected to grow by 1,071 people by 2041, necessitating approximately 536 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 Largs Bay - Semaphore SA2?
Over the past five years, the population in the Largs Bay - Semaphore SA2 has grown by approximately 1,794 people, while 446 residential approvals were recorded. This equates to a ratio of 4.0 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 Largs Bay - Semaphore SA2?
With dwelling approval activity running at an average of 89 approvals per year and a population of 15,778, 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 1,071 people by 2041, around 536 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 Largs Bay - Semaphore

Development applications around Largs Bay - Semaphore

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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 Largs Bay - Semaphore

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AreaSearch tracks 3 current infrastructure and development projects inside Largs Bay - Semaphore, worth an estimated $18 million. A further 42 sit in the immediately surrounding suburbs, taking the tracked pipeline within reach of the area to $3.41 billion. 15 are already under construction and 16 are due for completion within three years. The pipeline spans sports & recreation, residential development and communities, precincts & urban renewal. Records are compiled from Infrastructure Australia, state agencies, council planning portals and public announcements, reviewed and updated daily, then ranked by proximity, construction stage, completion horizon and project scale.

Detail

Changes to local infrastructure, major developments, and urban planning policies are key drivers of local performance. AreaSearch has identified a total of 13 projects expected to impact the area. Notable projects include Fletcher's Slip, Dock One, Centre St, Largs Bay, and Our Port, with details of the most relevant initiatives listed below.

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Frequently Asked Questions - Infrastructure

What are some of the major infrastructure and planning changes likely to influence the Largs Bay - Semaphore SA2?
Key infrastructure and planning changes likely to influence the Largs Bay - Semaphore SA2 include: Fletcher's Slip (Construction); Dock One (Construction); Centre St, Largs Bay (Proposed); Our Port (Construction); and West Lakes Shore Masterplan Residential Release (Construction). These projects represent significant developments that will shape the area's future infrastructure landscape.
What types of infrastructure projects are impacting the Largs Bay - Semaphore SA2?
Infrastructure development impacting the Largs Bay - Semaphore SA2 spans multiple sectors including Residential Development, Ports, Marinas, Fisheries & Aquaculture, and Tourism, among others.
What is the scale of infrastructure investment impacting the Largs Bay - Semaphore SA2?
Infrastructure investment analysis indicates significant investment of approximately $594 million in infrastructure projects affecting the region, with a notable concentration of investment within the immediate the Largs Bay - Semaphore SA2 vicinity.
How does the Largs Bay - Semaphore SA2's infrastructure development compare to other areas?
Infrastructure development activity impacting the Largs Bay - Semaphore SA2 currently ranks below national averages at the 17thth percentile.
Semaphore Foreshore Precinct Master Plan Redevelopment
Category: Sports & Recreation
Stage: Approved | Est. Comp: 2028
Source / Links: Link 1   Link 2  

Major urban foreshore revitalization by the City of Port Adelaide Enfield, featuring upgraded open lawns, public plaza, pedestrian promenades, event spaces, steam train and carousel integration, and modern public amenities. Construction is planned to commence in February 2027.

Sports & Recreation

Quest Hotel Port Adelaide (Second Quest) and Large Retail Precinct
Category: Tourism
Stage: Construction | Est. Comp: 2026
Source / Links: Link 1   Link 2  

This significant redevelopment by One SMG (Neville Smith Group) features a second $35 million Quest Hotel apartment complex at 10-12 North Parade, providing 88-90 serviced guest suites with river views, gym, and conference facilities. Complementing the hotel is a large-format retail and commercial hub at 271 Commercial Road, spanning approximately 5,860 sqm. The precinct focuses on urban renewal, adaptive reuse of heritage elements like Customs House, and improved pedestrian connectivity to the Port River waterfront.Construction on the retail component is scheduled to commence around late 2025/early 2026 following development approval in August 2025.

Tourism

Dock One
Category: Communities, Precincts & Urban Renewal
Stage: Construction | Est. Comp: 2029
Source / Links: Link 1   Link 2  

Major waterfront masterplanned community at Port Adelaide by Kite Projects, incorporating Dock One stages and Dock One North. The precinct includes about 750 townhouses and apartments, landscaped waterfront promenades, park links, 23,500 sqm of green open space, a completed pedestrian bridge, a community plaza and the adaptive reuse of the former Marine and Harbours Building as a boutique hotel. Current official updates indicate Dock One North is now selling, construction is underway on the residential stages, the bridge and plaza are complete, and demolition works have commenced for the hotel component.

Communities, Precincts & Urban Renewal

Fletcher's Slip
Category: Residential Development
Stage: Construction | Est. Comp: 0
Source / Links: Link 1   

A large-scale residential and commercial development that is transforming a historic maritime precinct. The project is planned to include 502 new homes, comprising a mix of townhouses and apartments (e.g., Sirocco apartments with 41 dwellings), with a focus on waterfront living and landscaped green spaces.

Residential Development

Centre St, Largs Bay
Category: Residential Development
Stage: Proposed | Est. Comp: 0

A deal to deliver infrastructure and over 600 social, affordable, and market-rate houses to improve housing affordability.

Residential Development

West Lakes Marina Upgrade
Category: Ports, Marinas, Fisheries & Aquaculture
Stage: Under Assessment | Est. Comp: 2026
Source / Links: Link 1   Link 2  

Concept to upgrade lakeside berthing and public access infrastructure around the Aquatic Reserve at West Lakes, including additional small-craft berths, amenity upgrades to the boat launch area used by paddle sports, and foreshore improvements. No authoritative government project page found; enquiries directed to City of Charles Sturt as asset manager for West Lakes recreation facilities.

Ports, Marinas, Fisheries & Aquaculture

Our Port
Category: Ports, Marinas, Fisheries & Aquaculture
Stage: Construction | Est. Comp: 2027
Source / Links: Link 1   Link 2  

Port Adelaide will be a place of discovery, energy, culture and diversity - an eclectic, vibrant reflection of the South Australian character more broadly. The project is a renewal effort to rejuvenate Port Adelaide, aiming to create a vibrant, diverse area with 2,000-4,000 homes and 4,000-8,000 people.

Ports, Marinas, Fisheries & Aquaculture

West Lakes Shore Masterplan Residential Release
Category: Residential Development
Stage: Construction | Est. Comp: 2026
Source / Links: Link 1   Link 2  

Renewal SA's West Lakes Shore residential land release is in its final delivery stages, creating around 120 waterfront residential allotments with new public open space, landscaped reserves and upgraded local infrastructure. Civil works and home construction continue across the remaining stages.

Residential Development

Jobs & IndustryEmployment Trends in Largs Bay - Semaphore

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9,447 residents of Largs Bay - Semaphore are employed, from a labour force of 9,716. Unemployment sits at 2.8%, with participation at 71.9%. Weighted for its industry mix, the area's sectors are forecast to grow about 6.4% nationally over five years. That reflects industry composition only and makes no allowance for local population growth. The working-day population is estimated at 12,648, about 80% 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

Largs Bay - Semaphore features a qualified workforce with a strong presence in essential services, an unemployment rate of only 2.8%, and an estimated job growth rate of 7.8% over the past year. In March 2026, there were 9,447 employed residents, and the unemployment rate sat 1.1% below the 3.8% recorded across Greater Adelaide. Furthermore, labor force participation is high at 71.9%, compared to the Greater Adelaide average of 66.6%. According to Census data, a modest 10.8% of residents worked from home, though this figure may have been influenced by COVID-19 pandemic restrictions.

The primary employment sectors for local residents are health care & social assistance, public administration & safety, and education & training. Public administration & safety is highly concentrated in the area, with an employment share that is 1.3 times the regional average. Conversely, health care & social assistance has a lower representation locally at 16.4% compared to 17.7% across the region. Comparison of the Census working population against the resident population suggests that this predominantly residential suburb offers few local employment opportunities. Analysis of SALM and ABS statistics by AreaSearch shows that during the 12 months ending March 2026, the number of employed residents rose by 7.8% and the labor force expanded by 6.1%, which led to a 1.6 percentage point decrease in the unemployment rate. By comparison, employment in Greater Adelaide grew by 4.2%, the labor force expanded by 4.0%, and the unemployment rate declined by 0.2 percentage points. Five- and ten-year national employment projections from Jobs and Skills Australia released in May-25 offer additional context on future demand in Largs Bay - Semaphore. These figures have been applied to the local workforce composition to estimate growth. While national employment is projected to grow by 6.6% over five years and 13.7% over ten years, trends vary widely by sector. Applying these industry projections to the local employment structure indicates that employment in Largs Bay - Semaphore would grow by 6.4% over five years and 13.4% over ten years (assuming a simple weighted extrapolation for illustration that does not account for local population changes).

Frequently Asked Questions - Employment

What is the employment situation in the Largs Bay - Semaphore SA2?
As of March 2026, the Largs Bay - Semaphore SA2 has approximately 9,447 employed residents with an unemployment rate of 2.8%. 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 Largs Bay - Semaphore SA2's unemployment rate compare to the broader region?
As of March 2026, the unemployment rate in the Largs Bay - Semaphore SA2 stands at 2.8%, which is 1.1 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 Largs Bay - Semaphore SA2?
The employment landscape in the Largs Bay - Semaphore SA2 is dominated by several key sectors. The largest employers are health care & social assistance (16.4% of employment), public administration & safety (9.9%), and education & training (9.6%). Other significant employers include retail trade and construction.
How has employment changed recently in the Largs Bay - Semaphore SA2?
Over the past year to March 2026, the Largs Bay - Semaphore 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 Largs Bay - Semaphore SA2?
The workforce participation rate in the Largs Bay - Semaphore SA2 is 71.9%, which represents the proportion of working-age residents who are either employed or actively seeking work. This high participation rate indicates strong workforce engagement and economic vitality. The local rate leading the Greater Adelaide average of 66.6%, indicating stronger workforce attachment in the local area.
Which industries are over-represented in the Largs Bay - Semaphore SA2's employment market?
The largs bay - semaphore sa2 shows notable specialization in public administration & safety, which employs 9.9% of the local workforce compared to 7.4% regionally. This moderate specialization indicates some local strength in the sector.
What are the employment growth prospects for the Largs Bay - Semaphore SA2?
Based on Jobs and Skills Australia projections applied to the Largs Bay - Semaphore SA2's industry mix, employment is expected to grow by 6.4% over the next five years and 13.4% over ten years. This compares to national growth expectations of 6.6% over five years. Steady growth is anticipated across multiple sectors, providing diverse employment opportunities.
How does the job market in the Largs Bay - Semaphore SA2 compare nationally?
The largs bay - semaphore 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 Largs Bay - Semaphore SA2?
Skilled workers will find good opportunities in the Largs Bay - Semaphore SA2, with skilled sectors accounting for 36.4% of employment. Key sectors for skilled workers include health care & social assistance (16.4%), education & training (9.6%), and professional & technical (6.3%). With projected employment growth of 6.4% over five years, demand for skilled workers is expected to remain strong.

EarningsHousehold Income in Largs Bay - Semaphore

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Median household income in Largs Bay - Semaphore is $1,584 a week (about $82,000 a year), with median personal income at $858 a week. ATO records put median taxable income at $60,427 a year against an average of $70,072. 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

Based on the most recent postcode-level ATO data released for the financial year 2023, the median income of taxpayers in the Largs Bay - Semaphore SA2 is $60,427, with a mean income of $70,072. This is slightly higher than the national average, and compares to a median of $54,808 and a mean of $66,852 across Greater Adelaide. Factoring in Wage Price Index growth of 10.17% since the financial year 2023, estimated figures for March 2026 would be roughly $66,572 (median) and $77,198 (average). Census figures indicate that individual income is in the 60th percentile ($858 weekly), whereas household income is in the 40th percentile.

The income distribution is dominated by the $1,500 - 2,999 bracket, which accounts for 32.4% of residents (5,112 people), matching the regional trend where 31.8% fall into this bracket. Affordability pressures are significant, leaving residents with only 84.6% of their income after housing costs, ranking in the 41st percentile, and the SEIFA index ranks the area's income in the 5th decile.

Frequently Asked Questions - Income

What is the median taxable income in the Largs Bay - Semaphore SA2?
Based on Wage Price Index adjustments to March 2026, the estimated median taxable income in the Largs Bay - Semaphore SA2 is approximately $66,572. The official ATO data from FY-23 recorded a median of $60,427.
What is the average taxable income in the Largs Bay - Semaphore SA2?
Based on Wage Price Index adjustments to March 2026, the estimated average taxable income in the Largs Bay - Semaphore SA2 is approximately $77,198. The official ATO data from FY-23 recorded an average of $70,072.
How does the median taxable income in the Largs Bay - Semaphore SA2 compare to the region?
Based on Wage Price Index adjustments to March 2026, the estimated median taxable income in the Largs Bay - Semaphore SA2 is approximately $66,572 compared to $60,382 in Greater Adelaide. The official ATO data from FY-23 shows $60,427 and $54,808 respectively.
How does the average taxable income in the Largs Bay - Semaphore SA2 compare to the region?
Based on Wage Price Index adjustments to March 2026, the estimated average taxable income in the Largs Bay - Semaphore SA2 is approximately $77,198 compared to $73,651 in Greater Adelaide. The official ATO data from FY-23 shows $70,072 and $66,852 respectively.
What are the main income cohorts in the Largs Bay - Semaphore SA2 according to the 2021 Census?
As per the 2021 Census, the income bracket containing the largest proportion (~32.4% / 5,112 persons) of the Largs Bay - Semaphore SA2's population is the $1,500 - 2,999 cohort.
How do the main income cohorts in the Largs Bay - Semaphore SA2 compare to the region?
The largest income cohort in the Largs Bay - Semaphore SA2 is the $1,500 - 2,999 group, representing about 32.4% 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 Largs Bay - Semaphore SA2 according to the 2021 Census?
The 2021 Census data indicates that the median household income in the Largs Bay - Semaphore SA2 is $1,584/wk.
What is the median family income in the Largs Bay - Semaphore SA2 according to the 2021 Census?
According to the 2021 Census, the median family income in the Largs Bay - Semaphore SA2 is $2,212/wk.
What is the median personal income in the Largs Bay - Semaphore SA2 according to the 2021 Census?
The 2021 Census shows that the median personal income in the Largs Bay - Semaphore SA2 is $858/wk.
How does the Largs Bay - Semaphore SA2's income rank nationally?
AreaSearch's latest postcode level ATO data for FY-23 reveals that income in the Largs Bay - Semaphore SA2 is just above the national average, with the median assessed at $60,427 while the average income stands at $70,072. This contrasts to Greater Adelaide's figures of a median income of $54,808 and an average income of $66,852. Based on Wage Price Index growth of 10.17% since FY-23, current estimates would be approximately $66,572 (median) and $77,198 (average) as of March 2026.
What is the disposable income in the Largs Bay - Semaphore SA2?
The estimated disposable income in the Largs Bay - Semaphore SA2 is $5,805 per year according to AreaSearch analysis.
How does the Largs Bay - Semaphore SA2's disposable income compare to the region?
The largs bay - semaphore sa2's disposable income is $5,805 compared to $5,698 for Greater Adelaide, based on AreaSearch analysis.

Housing StockHousing & Dwellings in Largs Bay - Semaphore

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Largs Bay - Semaphore had 6,350 occupied dwellings at the 2021 Census, 70% detached houses and 13% apartments. 40% are owned with a mortgage, 30% rented and 31% owned outright. At that Census the median rent was $320 a week and the median mortgage repayment $1,625 a month. Rent absorbs 20.2% of household income here and mortgage repayments 23.7%. 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 stock in Largs Bay - Semaphore consists of 69.8% houses and 30.2% semi-detached dwellings, apartments, or other residential formats, compared to 75.2% houses and 24.9% other dwellings across metropolitan Adelaide. Home ownership rates in Largs Bay - Semaphore match the Adelaide metro rate at 30.5%, while the remaining properties are mortgaged (39.7%) or rented (29.8%). The median monthly mortgage payment in the area is $1,625, which is higher than the Adelaide metro average of $1,562, while the median weekly rent matches the metropolitan average at $320.

On a national level, mortgage payments in Largs Bay - Semaphore are much lower than the Australian average of $1,863, and rents are also well below the national figure of $375.

Frequently Asked Questions - Housing

What percentage of homes are owned vs rented in the Largs Bay - Semaphore SA2?
In the Largs Bay - Semaphore SA2, 30.5% of homes are owned outright, 39.7% are owned with a mortgage, and 29.8% are rented.
What percentage of dwellings in the Largs Bay - Semaphore SA2 are houses?
According to the latest data, 69.8% of dwellings in the Largs Bay - Semaphore SA2 are houses.
What percentage of dwellings in the Largs Bay - Semaphore SA2 are apartments or units?
In the Largs Bay - Semaphore SA2, 13.3% of dwellings are apartments or units, with an additional 16.7% being semi-detached dwellings.
What is the level of outright home ownership in the Largs Bay - Semaphore SA2?
Outright home ownership in the Largs Bay - Semaphore SA2 stands at 30.5%, compared to 32.1% in Greater Adelaide.
What is the median monthly mortgage repayment in the Largs Bay - Semaphore SA2?
The median monthly mortgage repayment in the Largs Bay - Semaphore SA2 is $1,625, compared to $1,562 in Greater Adelaide.
What is the median weekly rent in the Largs Bay - Semaphore SA2?
The median weekly rent in the Largs Bay - Semaphore SA2 is $320, compared to $320 in Greater Adelaide.
What is the distribution of rental prices in the Largs Bay - Semaphore SA2?
In the Largs Bay - Semaphore SA2, 11.9% of rentals are $0-149/week, 47.6% are $150-349/week, 38.7% are $350-649/week, 1.4% are $650-949/week, and 0.4% are $950+/week.
What is the average monthly housing cost in the Largs Bay - Semaphore SA2?
The aggregate monthly housing cost in the Largs Bay - Semaphore SA2 is $1,058, which represents the average monthly cost across all housing types.
What percentage of income do residents spend on housing in the Largs Bay - Semaphore SA2?
In the Largs Bay - Semaphore SA2, households with mortgages typically spend 23.7% of their income on mortgage repayments, while renters spend 20.2% of their income on rent.
How crowded are homes in the Largs Bay - Semaphore SA2?
The average persons per bedroom ratio in the Largs Bay - Semaphore SA2 is 0.8, indicating the level of household density.
How does housing affordability in the Largs Bay - Semaphore SA2 compare to the region?
Housing affordability in the Largs Bay - Semaphore SA2 shows mortgage holders spending 23.7% of income on repayments (vs 23.3% regionally), while renters spend 20.2% of income on rent (vs 20.7% regionally).
What types of dwellings are most common in the Largs Bay - Semaphore SA2?
The dwelling mix in the Largs Bay - Semaphore SA2 consists of 69.8% detached houses, 16.7% semi-detached dwellings, 13.3% apartments, and 0.2% other dwelling types.
What is the weighted average housing cost based on tenure mix in the Largs Bay - Semaphore SA2?
Given the tenure profile of the area, the weighted average monthly housing cost is approximately $1,058. This accounts for outright owners paying no housing costs, mortgage holders paying $1,625/month, and renters paying $1,386/month.
How affordable is housing in the Largs Bay - Semaphore SA2 relative to local incomes?
Housing in Largs Bay - Semaphore consumes approximately 15.4% of median household income ($6,859 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 Largs Bay - Semaphore SA2?
Recent development applications in Largs Bay - Semaphore show attached dwellings contributing 64% of approvals compared to 30% of existing stock, while detached houses represent 36% of applications versus 70% of current dwellings. This suggests increasing densification. This area is seeing substantial increases in dwelling density compared to most Australian locations.

HouseholdsHousehold Composition in Largs Bay - Semaphore

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Largs Bay - Semaphore counted 6,350 households at the 2021 Census, an estimated 6,766 today, averaging 2.2 people each. 23% are couples with children, fewer than in 77% of areas nationally, against 27% couples without children. 35% of households are people living alone, and families average 1.4 children. Household and family composition is measured only by the Census, so these are 2021 figures.

Detail

Families make up 62.4% of all households, consisting of couples with children (23.1%), couples without children (26.6%), and single parents (11.5%). The remaining 37.6% are non-family households, which are dominated by lone persons at 34.6% and group households at 3.0%. The median household size of 2.2 persons is lower than the Greater Adelaide average of 2.5.

Frequently Asked Questions - Households

How many households are in the Largs Bay - Semaphore SA2?
As of the 2021 Census, the Largs Bay - Semaphore SA2 had 6,350 households. Based on population growth patterns, this has grown by approximately 6.6% to an estimated 6,766 households today.
What is the typical household size?
The median household size in the Largs Bay - Semaphore SA2 is 2.2 people. This compares to 2.5 in Greater Adelaide and reflects the area's household composition mix.
What types of households are most common?
Family households dominate at 62.4% of all households. The remaining households consist of lone person households (34.6%), group households (3.0%), and other household types (0.0%).
How are families structured in the area?
Among the 3,962 family households, 23.1% are couples with children, 26.6% are couples without children at home, and 11.5% are single parent families. This mix shapes local demand for schools, family services, and housing types.
How does the Largs Bay - Semaphore SA2 compare to regional household patterns?
Compared to Greater Adelaide, the Largs Bay - Semaphore SA2 shows distinct household patterns. Lone person households are notably over-represented at 34.6% (versus 27.7% regionally). Conversely, family households are under-represented at 62.4% compared to the regional 68.6%. This higher proportion of single-person households drives demand for smaller dwellings and different community services.
What is the average family size?
Families in the Largs Bay - Semaphore SA2 have an average of 1.4 children, slightly below 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 Largs Bay - Semaphore SA2?
Marriage patterns reveal 38.9% of the adult population are currently married, while 39.5% 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 34.6% of all households in the Largs Bay - Semaphore SA2, higher than the regional average of 27.7%. This affects demand for smaller dwellings and single-person accommodation.
Are shared living arrangements common?
Group households (unrelated people sharing) account for 3.0% 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 Largs Bay - Semaphore

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26.3% of adults in Largs Bay - Semaphore hold a university qualification, including 17.2% with a bachelor degree and 5.8% with postgraduate qualifications. A further 24.7% hold a vocational qualification. 5 schools serve the area, with 1,985 enrolment places and an average ICSEA of 1,000 against a national benchmark of 1,000. Qualifications come from the 2021 Census; school enrolments, ICSEA and results come from ACARA's current release.

Detail

The proportion of residents in Largs Bay - Semaphore holding university qualifications is 26.3%, slightly below the national average of 30.4%, pointing to a reasonably competitive educational profile. Bachelor degrees are the most common higher qualification at 17.2%, followed by postgraduate degrees (5.8%) and graduate diplomas (3.3%). Vocational and technical training is highly represented, with 35.8% of residents aged 15+ holding qualifications in these fields, consisting of advanced diplomas (11.1%) and certificates (24.7%). A significant 23.8% of the local population is enrolled in formal study. This comprises 7.9% in primary school, 5.8% in high school, and 5.2% in higher education.

Frequently Asked Questions - Education

What percentage of people in the Largs Bay - Semaphore SA2 have university qualifications?
26.3% of people aged 15 and over in the Largs Bay - Semaphore SA2 have university qualifications, compared to 28.9% in the broader region.
What percentage of people in the Largs Bay - Semaphore SA2 have no formal qualifications?
37.8% of people aged 15 and over in the Largs Bay - Semaphore SA2 have no formal qualifications, compared to 39.0% regionally.
How does the Largs Bay - Semaphore SA2's education level compare to national averages?
The largs bay - semaphore sa2 ranks in the 44th percentile nationally for education based on AreaSearch's analysis of qualification and performance metrics.
What types of qualifications are most common in the Largs Bay - Semaphore SA2?
The most common qualifications in the Largs Bay - Semaphore SA2 are: Certificate (24.7%), Bachelor Degree (17.2%), Advanced Diploma (11.1%).
What proportion of the Largs Bay - Semaphore SA2's population is currently attending educational institutions?
23.8% of the population in the Largs Bay - Semaphore SA2 is currently engaged in formal education, with 7.9% in primary school, 5.8% in secondary school, 5.2% at university.
What is the ICSEA score for schools in the Largs Bay - Semaphore SA2?
The average ICSEA (Index of Community Socio-Educational Advantage) score for schools in the Largs Bay - Semaphore SA2 is 1000, indicating below-average socio-educational advantage compared to the national average of 1000.
How many schools are located within the Largs Bay - Semaphore SA2?
There are 5 schools within the Largs Bay - Semaphore SA2, with a combined enrollment of approximately 1,985 students.
What types of schools are available in the Largs Bay - Semaphore SA2?
The largs bay - semaphore sa2 includes 3 primary schools, 1 secondary school, 1 combined school.

Schools Detail

AmenitiesServices & Amenities in Largs Bay - Semaphore

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Getting AroundTransport & Commuting in Largs Bay - Semaphore

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Public transport in Largs Bay - Semaphore reaches 71 stops on 34 routes, timetabled for about 2,800 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 1.2 vehicles. Stop and service counts are built from operators' published GTFS timetables and refresh with each timetable release; vehicle ownership is from the 2021 Census.

Detail

Analysis of the public transport network shows 71 active transit stops in Largs Bay - Semaphore, consisting of both train stations and bus stops. These stops are served by 34 separate routes, which run a combined 2,832 weekly passenger services. Accessibility is high, with the average distance to the nearest stop being 171 meters. As a residential suburb, most employed residents travel out of the area for work, with private cars being the primary mode of transport at 85%, followed by trains at 8%. Average vehicle ownership is 1.2 per household, which is below the regional average.

A relatively low proportion of residents (10.8%) worked from home, according to the 2021 Census, which may reflect pandemic-era arrangements. Across all active routes, service frequencies average 404 trips daily, which equates to approximately 39 weekly trips for each transit stop.

Frequently Asked Questions - Transport

How many public transport stops are in Largs Bay - Semaphore?
There are 71 public transport stops within the Largs Bay - Semaphore SA2.
How frequent are the transport services in Largs Bay - Semaphore?
the Largs Bay - Semaphore SA2 has 2,832 weekly trips across 34 routes, averaging 404 trips per day.
How far are residents from public transport in Largs Bay - Semaphore?
On average, residential properties are 171 meters from the nearest transport stop.

Transport Stops Detail

HealthcareHealth Services in Largs Bay - Semaphore

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64.0% of residents in Largs Bay - Semaphore report no long-term health condition, a less healthy profile than 87% of areas nationally. 6.8% need daily assistance with core activities, and 53.9% hold private health cover. The standardised death rate runs at 7.0 per 1,000 residents. Health conditions, assistance needs and insurance are 2021 Census measures; the death rate comes from current ABS releases.

Detail

Health assessments indicate notable difficulties in Largs Bay - Semaphore, drawing from mortality statistics and the prevalence of chronic health issues across younger and older demographics, while the rate of private health insurance is slightly above the SA2 average at approximately 54% of the population (~8,504 people). Mental health conditions and arthritis are the most common medical diagnoses in the area, affecting 10.0% and 9.3% of the population, respectively. Meanwhile, 64.0% of residents reported having no long-term medical conditions, compared to 67.9% in Greater Adelaide. The working-age group exhibits elevated rates of chronic illnesses.

Residents aged 65 and over make up 21.0% of the population (3,308 people), which is higher than the 19.2% average across Greater Adelaide. Senior health profiles reflect some difficulties, with national indicators generally matching those of the broader community.

Frequently Asked Questions - Health

How many people in the Largs Bay - Semaphore SA2 have private health insurance?
Around 53.9% of people in the Largs Bay - Semaphore 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 Largs Bay - Semaphore SA2?
In the Largs Bay - Semaphore SA2, 6.8% 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 Largs Bay - Semaphore SA2?
8.4% of people in the Largs Bay - Semaphore 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 Largs Bay - Semaphore SA2?
Diabetes affects 4.6% of the the Largs Bay - Semaphore 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 Largs Bay - Semaphore SA2?
3.8% of people in the Largs Bay - Semaphore SA2 have heart disease. Across the region of Greater Adelaide, 3.8% of the population is affected by heart disease.
How does the Largs Bay - Semaphore SA2 compare to the region in terms of overall private health coverage?
In the Largs Bay - Semaphore 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 Largs Bay - Semaphore

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Largs Bay - Semaphore is largely Australian-born, at 80.9% of residents, with 8.6% speaking a language other than English at home. The largest reported ancestries are English (31.3%) and Australian (24.0%). Ancestry, language and country of birth are counted only by the Census, so these are 2021 figures.

Detail

Largs Bay - Semaphore has a lower level of cultural diversity than average, with 80.9% of residents born in Australia, 91.4% holding citizenship, and 91.4% using only English at home. Christianity is the dominant religion, representing 40.5% of the population. The most prominent religious variance is Islam, which accounts for 0.6% of residents compared to 3.0% across Greater Adelaide. Regarding parental ancestry, the three largest groups in Largs Bay - Semaphore are English (31.3%), Australian (24.0%), and Irish (8.7%). Notable variations in the representation of other ethnic backgrounds include Polish at 1.1% (compared to 1.0% across the region), German at 5.4% (compared to 5.1%), and Welsh at 0.7% (compared to 0.6%).

Frequently Asked Questions - Diversity

What is the level of cultural diversity in the Largs Bay - Semaphore SA2?
Largs Bay - Semaphore was found to be below average in terms of cultural diversity, with 80.9% of its population born in Australia, 91.4% being citizens, and 91.4% speaking English only at home.
What is the most common religion in the Largs Bay - Semaphore SA2?
The main religion in Largs Bay - Semaphore was found to be Christianity, which makes up 40.5% of people in Largs Bay - Semaphore. However, the most apparent overrepresentation was in Islam, which comprises 0.6% of the population, compared to 3.0% across Greater Adelaide.
What are the top countries of origin in the Largs Bay - Semaphore SA2?
In terms of ancestry (country of birth of parents), the top three represented groups in Largs Bay - Semaphore are English, comprising 31.3% of the population, Australian, comprising 24.0% of the population, and Irish, comprising 8.7% of the population. Additionally, there are notable divergences in the representation of certain other ethnic groups: Polish is notably overrepresented at 1.1% of Largs Bay - Semaphore (vs 1.0% regionally), German at 5.4% (vs 5.1%) and Welsh at 0.7% (vs 0.6%).
How does the percentage of people born overseas compare to the regional average?
19.1% of the the Largs Bay - Semaphore SA2 population was born overseas, compared to 28.7% regionally.
What percentage of the the Largs Bay - Semaphore SA2 population speaks a language other than English at home?
8.6% of the population in the Largs Bay - Semaphore SA2 speaks a language other than English at home, compared to 22.2% in the wider region.
How many people in the Largs Bay - Semaphore SA2 identify as Australian Aboriginal?
2.0% of the the Largs Bay - Semaphore SA2 population identifies as Australian Aboriginal, compared to 1.2% in the region.
What is the citizenship status of the population in the Largs Bay - Semaphore SA2?
91.4% of the the Largs Bay - Semaphore SA2 population holds citizenship, compared to 86.3% in the wider region.

Age StructureAge Profile of Largs Bay - Semaphore

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The median resident of Largs Bay - Semaphore is 45, older than 78% of areas nationally. 21.9% of residents are aged 15 to 34. Age cohorts are not raw Census counts: the Census split is re-based to the latest ABS population estimates and state projections.

Detail

The median age in Largs Bay - Semaphore is 45 years, which is higher than the Greater Adelaide average of 39 and the national average of 38. The 55 - 64 age bracket is heavily represented at 16.8% compared to Greater Adelaide, while the 15 - 24 age group is smaller at 9.6%. The concentration of residents aged 55 - 64 is also well above the national figure of 11.2%. Since the 2021 Census, the proportion of residents aged 75 to 84 has risen from 4.7% to 6.4%, and the 65 to 74 group has grown from 11.4% to 12.7%, while the 45 to 54 cohort fell from 14.9% to 12.3%.

Projections suggest that the age structure will change significantly by 2041. The 75 to 84 bracket is expected to grow the fastest, increasing by 48% (adding 485 residents to reach 1,489). Older residents (65+) are projected to account for 77% of the total population growth, highlight the aging of the population, while the 15 to 24 and 0 to 4 cohorts are expected to decrease.

Frequently Asked Questions - Age

What is the median age in the Largs Bay - Semaphore SA2?
According to the latest data, the median age in the Largs Bay - Semaphore SA2 is 45 years.
How does the Largs Bay - Semaphore SA2's median age compare to broader areas?
At 45 years, Largs Bay - Semaphore is 6 years older than the Greater Adelaide average (39 years) and 7 years older than the national average (38 years).
What age groups are over-represented in the Largs Bay - Semaphore SA2?
The most over-represented age group in the Largs Bay - Semaphore SA2 compared to the Greater Adelaide region is the 55 - 64 group, making up 16.8% of the population.
What age groups are under-represented in the Largs Bay - Semaphore SA2?
The most under-represented age group in the Largs Bay - Semaphore SA2 compared to the Greater Adelaide region is the 15 - 24 group, making up 9.6% of the population.
Are there age groups with notable population variances?
Yes, certain age groups in the Largs Bay - Semaphore SA2 show significant variance compared to the Greater Adelaide region. The most over-represented age group is 55-64 year-olds (16.8% vs 11.4%).
What is the percentage of children (0-14 years) in the Largs Bay - Semaphore SA2?
The percentage of children aged 0-14 years in the Largs Bay - Semaphore SA2 is 14.3%.
What is the percentage of older people (65+ years) in the Largs Bay - Semaphore SA2?
The percentage of people aged 65 and over in the Largs Bay - Semaphore SA2 is 21.0%.

Data & MethodBoundaries, Sources & Method for Largs Bay - Semaphore

Data currency Refreshed

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

Everything is aggregated to the SA2 boundary shown above, on a 2021 Census baseline. Only 3 sections — housing, households and cultural diversity — still wait on the 2026 Census.

The ledger — source, cycle and currency by section

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

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

How the numbers are built

Population

The Census provides the small-area baseline, aggregated from mesh blocks to this boundary. It is then re-based to the ABS Estimated Resident Population (June 2025 release), and new dwellings built since Census night are counted from address data — 298 validated new addresses here. The headline figure is therefore a current estimate for May 2026, not a 2021 count (14,807 at the 2021 Census → 15,778 now). Annual growth rates are compound (CAGR), not simple averages.

Age profile

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

Property sales

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

Rents

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

Development & infrastructure

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

Employment & income

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

Education, transport & amenities

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

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

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

Cross-check us. The Census baseline for this boundary is at ABS 2021 Census QuickStats (404021099). 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 Largs Bay - Semaphore 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 Largs Bay - Semaphore 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 Largs Bay - Semaphore data on this page just from the 2021 Census?
No. Most of this page is maintained well beyond the Census. Sourced entirely from current releases: development & approvals (Jun 2026), property sales & rents (Aug 2026), infrastructure projects (Jul 2026) and services & amenities (Jul 2026). Built on a Census baseline but carrying newer measures on top: population (to May 2026), age profile (to May 2026), employment (to Mar 2026), income (to FY 2023), education (to Aug 2026), transport (to Jul 2026) and health (to 2024). Population and age cohorts in particular are re-based to the latest ABS Estimated Resident Population rather than left at 2021 counts. Only housing, households and cultural diversity remain wholly Census-based, because no more current small-area dataset exists for those measures.

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