Semaphore Park

Suburb (SAL)

Greater Adelaide / Charles Sturt

 
 
 
 
 
 
 
Data Sources ABSValuer GeneralRental BoardACARA Newest Aug 2026 · Refreshed ABS QuickStats SAL41330 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 Semaphore Park

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DemographicsPopulation Growth in Semaphore Park

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Semaphore Park has an estimated 4,391 residents, down from 4,541 at the 2021 Census — a change of 150 people, or 3.3%. The population has thinned by an average 0.6% a year over five years, slower than 98% of areas nationally. That puts 2,299 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

Based on analysis of ABS population updates for the broader area, and new addresses validated by AreaSearch since the Census Semaphore Park's population is estimated at around 4,391 as of May 2026. This reflects a decrease of 150 people (3.3%) since the 2021 Census, which reported a population of 4,541 people. The change is inferred from the resident population of 4,385, estimated by AreaSearch following examination of the latest ERP data release by the ABS (June 2025) and an additional 27 validated new addresses since the Census date. This level of population equates to a density ratio of 2,299 persons per square kilometer, which is above the average seen across national locations assessed by AreaSearch.

Population growth for the area was primarily driven by overseas migration that contributed approximately 54.0% of overall population gains during recent periods. AreaSearch is adopting ABS/Geoscience Australia projections for each SA2 area, as released in 2024 with 2022 as the base year. For any SA2 areas not covered by this data, and for years post-2032, the SA State Government's Regional/LGA projections by age category, released in 2023 and based on 2021 data, are adopted with adjustments made employing a method of weighted aggregation of population growth from LGA to SA2 levels. Considering the projected demographic shifts, a population increase just below the median of statistical areas analysed by AreaSearch is expected, with the area expected to grow by 464 persons to 2041 based on aggregated SA2-level projections, reflecting reflecting an increase of 10.4% in total over the 16 years.

Frequently Asked Questions - Population

What is the latest population estimate for the suburb of Semaphore Park?
Total population for the suburb of Semaphore Park was estimated to be approximately 4,391 as at May 26. This is based upon an estimated resident population of 4,385 from the ABS up to June 2025.
How has the population in the suburb of Semaphore Park changed since 2021?
The suburb of semaphore park has lost approximately 150 people and shown a 3.30% decrease from the 4,541 people recorded at the 2021 Census period.
What is the population density in the suburb of Semaphore Park?
The population density in the suburb of Semaphore Park is estimated at 2,299 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 Semaphore Park?
Over the past 10 years, the population in the suburb of Semaphore Park has shown a compound annual growth rate of -0.1% per annum.
What are the main drivers of population growth in the suburb of Semaphore Park?
Population growth in the suburb of Semaphore Park is driven by: Overseas migration (54.0%), Interstate migration (46.0%), Natural increase (0.0%). The primary driver is Overseas migration, contributing 54.0% of overall population gains.

Residential SupplyHousing Development & Building Approvals in Semaphore Park

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99 new dwellings have been approved in Semaphore Park over the past five years, an average of 19 a year. That is 4.4 approvals per 1,000 residents. Approvals are currently running at an annualised 6, 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

Based on AreaSearch analysis of ABS building approval numbers, allocated from statistical area data, Semaphore Park has seen around 19 new homes approved annually, totalling an estimated 99 homes over the past 5 financial years. So far in FY-26, 6 approvals have been recorded. With population declining over recent years, development activity has been adequate in relative terms, a positive for buyers, while new properties are constructed at an average value of $510,000, demonstrating a developer focus on the premium segment with upmarket properties. Additionally, $15.3 million in commercial development approvals have been recorded this financial year, demonstrating moderate levels of commercial development.

Compared to Greater Adelaide, Semaphore Park records roughly half the building activity per person while it places among the 17th percentile of areas assessed nationally, meaning more limited choices for buyers, supporting demand for existing homes. Recent construction comprises 73.0% detached houses and 27.0% medium and high-density housing, preserving the area's suburban nature with an emphasis on detached housing attracting space-seeking buyers. New construction favours detached housing more than current patterns suggest (54.0% at Census), demonstrating ongoing robust demand for family homes.At around 883 people per approval, Semaphore Park shows a mature, established area. Population forecasts indicate Semaphore Park will gain 458 residents through to 2041 (from the latest AreaSearch quarterly estimate). At current development rates, new housing supply should comfortably meet demand, providing good conditions for buyers and potentially supporting growth beyond current population projections.

Frequently Asked Questions - Development

How many dwelling approvals have occurred in the suburb of Semaphore Park recently?
Dwelling approval activity in the the suburb of Semaphore Park area has seen 10 residential approvals over the past two financial years, based on AreaSearch's SA2 aggregation method. The suburb of Semaphore Park's current population of 4,391 has been supported by 19 approvals on average over recent years.
How does the suburb of Semaphore Park's development activity compare to the broader region?
The suburb of Semaphore Park has seen 0.44 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 883 people in the suburb of Semaphore Park, compared to one for every 144 in the broader region.
Is the suburb of Semaphore Park keeping up with housing demand?
With the population expected to increase by 458 people by 2041, around 229 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 Semaphore Park?
Looking at development activity over the past five years, the suburb of Semaphore Park's approval levels have been significantly below the yearly average of 19, showing a notable downturn in recent development.
How many dwellings will be needed to accommodate future population growth in the suburb of Semaphore Park?
The population in the suburb of Semaphore Park is expected to grow by 458 people by 2041, necessitating approximately 229 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 Semaphore Park?
Over the past five years, the suburb of Semaphore Park has seen 99 residential approvals while population has remained stable or declined, indicating potential market oversupply.
Are there opportunities for residential developers in the suburb of Semaphore Park?
With dwelling approval activity running at an average of 19 approvals per year and a population of 4,391, there appears to be a supply shortfall relative to projected demand, presenting strong opportunities for residential developers. With the population expected to increase by 458 people by 2041, around 229 new dwellings will be necessary. Current approval trends may be insufficient to meet forecast demand, indicating strong development opportunities.
Approvals Pipeline Development applications near Semaphore Park

Development applications around Semaphore Park

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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 Semaphore Park

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AreaSearch tracks 2 current infrastructure and development projects inside Semaphore Park, worth an estimated $53 million. A further 23 sit in the immediately surrounding suburbs, taking the tracked pipeline within reach of the area to $1.18 billion. 8 are already under construction and 8 are due for completion within three years. The pipeline spans residential development, communities, precincts & urban renewal and sports & recreation. Records are compiled from Infrastructure Australia, state agencies, council planning portals and public announcements, reviewed and updated daily, then ranked by proximity, construction stage, completion horizon and project scale.

Detail

Nothing can influence an area's performance as much as changes to local infrastructure, major projects and planning initiatives. In total 7 projects have been identified by AreaSearch that are likely to have an impact on the area. Key projects include West Lakes Shore Masterplan Residential Release, Novo West Lakes Stage 2, West Lakes Marina Upgrade, and West Lakes Sports Complex Upgrade, with the below list detailing those likely to be of most relevance.

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Frequently Asked Questions - Infrastructure

What are some of the major infrastructure and planning changes likely to influence the suburb of Semaphore Park?
Key infrastructure and planning changes likely to influence the suburb of Semaphore Park include: West Lakes Shore Masterplan Residential Release (Construction); Novo West Lakes Stage 2 (Construction); West Lakes Marina Upgrade (Under Assessment); West Lakes Sports Complex Upgrade (Planning); and West Lakes Tennis Club Redevelopment (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 Semaphore Park?
Infrastructure development impacting the suburb of Semaphore Park spans multiple sectors including Sports & Recreation, Residential Development, and Ports, Marinas, Fisheries & Aquaculture, among others.
What is the scale of infrastructure investment impacting the suburb of Semaphore Park?
Infrastructure investment analysis indicates substantial capital deployment exceeding $2.2 billion in projects that will impact the extended area.
How does the suburb of Semaphore Park's infrastructure development compare to other areas?
Infrastructure development activity impacting the suburb of Semaphore Park currently ranks below national averages at the 34thth percentile.
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

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

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

West Lakes Sports Complex Upgrade
Category: Sports & Recreation
Stage: Planning | Est. Comp: 2026
Source / Links: Link 1   

Major upgrade to West Lakes Sports Complex including new playing fields, clubhouse facilities, and spectator amenities.

Sports & Recreation

Coast Park Linear Park - Semaphore Park to West Lakes Shore (Stage 1)
Category: Sports & Recreation
Stage: Completed | Est. Comp: 2024
Source / Links: Link 1   Link 2  

Stage 1 delivers a 1.3 km accessible shared-use coastal path between Semaphore Park and West Lakes Shore, with hard-surface paving, seating, shelters and landscaping to improve safe access and enjoyment of Adelaide's coastline. Jointly funded by the State Government and City of Charles Sturt, the path was designed to minimise impacts on the sensitive dune environment.

Sports & Recreation

Novo West Lakes Stage 2
Category: Residential Development
Stage: Construction | Est. Comp: 2027
Source / Links: Link 1   

Novo West Lakes is a master-planned community situated on the former SA Water wastewater treatment site. Developed by Potentia, the project delivers up to 500 residential properties including townhouses, houses, and land lots, alongside around 3 hectares of public open spaces and a proposed retail precinct on Frederick Road. Earthworks and civil works for Stage 2 (Parkside) are underway, and the overall completion is estimated for mid-2027.

Residential Development

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

West Lakes Boulevard Road Management Plan and Footpath Upgrade
Category: Transport & Logistics
Stage: Planning | Est. Comp: N/A
Source / Links: Link 1   Link 2  

The South Australian Department for Infrastructure and Transport is progressing the West Lakes Boulevard Road Management Plan to identify staged improvements for safety, traffic operations, pedestrian and cycling access along the corridor. Separate funded footpath upgrade works are scheduled during 2026, while broader road upgrades remain subject to future funding.

Transport & Logistics

Jobs & IndustryEmployment Trends in Semaphore Park

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2,072 residents of Semaphore Park are employed, from a labour force of 2,161. Unemployment sits at 4.1%, with participation at 58.9%. 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 3,460, 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

Semaphore Park possesses a skilled workforce, with essential services sectors well represented, an unemployment rate of 4.1%, and 5.0% in estimated employment growth over the past year, based on AreaSearch aggregation of statistical area data. As of March 2026, 2,072 residents are in work while the unemployment rate is 0.3% above Greater Adelaide's rate of 3.8%, and workforce participation lags significantly (58.9% compared to Greater Adelaide's 66.6%). Based on Census responses, a low 12.3% of residents were found to work from home, though Covid-19 lockdown impacts should be considered. Leading employment industries among residents comprise health care & social assistance, construction, and education & training.

The area demonstrates particularly notable concentration in construction, with employment levels at 1.2 times the regional average. Meanwhile, health care & social assistance has limited presence with 15.1% employment compared to 17.7% regionally. The predominantly residential area appears to offer limited employment opportunities locally, as indicated by the count of Census working population vs resident population. Based on AreaSearch analysis of SALM and ABS data, aggregated from broader statistical areas, during the year to March 2026, employment levels increased by 5.0% and labour force increased by 3.1%, causing the unemployment rate to fall by 1.7 percentage points. This contrasts with Greater Adelaide, where employment rose by 4.2%, the labour force grew by 4.0%, and unemployment fell 0.2 percentage points. Jobs and Skills Australia's national employment forecasts from May-25 can offer further insight into potential future demand within Semaphore Park. These projections, covering five and ten-year periods, have been mapped against the local employment profile to estimate growth patterns. While national employment is forecast to expand by 6.6% over five years and 13.7% over ten years, growth rates differ significantly between industry sectors. Applying these industry-specific projections to Semaphore Park's employment mix suggests local employment should increase by 6.4% over five years and 13.4% over ten years (please note this is a simple weighting extrapolation for illustrative purposes and does not take into account localised population projections).

Frequently Asked Questions - Employment

What is the employment situation in the suburb of Semaphore Park?
As of March 2026, the suburb of Semaphore Park has approximately 2,072 employed residents with an unemployment rate of 4.1%. This healthy unemployment rate suggests a well-functioning labour market. Employment indicators are below the national average, suggesting room for improvement.
How does the suburb of Semaphore Park's unemployment rate compare to the broader region?
As of March 2026, the unemployment rate in the suburb of Semaphore Park stands at 4.1%, which is broadly in line with Greater Adelaide's rate of 3.8%. For comparison, the national unemployment rate is 4.2%.
What are the major employment sectors in the suburb of Semaphore Park?
The employment landscape in the suburb of Semaphore Park is dominated by several key sectors. The largest employers are health care & social assistance (15.1% of employment), construction (10.7%), and education & training (10.6%). Other significant employers include retail trade and public administration & safety.
How has employment changed recently in the suburb of Semaphore Park?
Over the past year to March 2026, the suburb of Semaphore Park 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 Semaphore Park?
The workforce participation rate in the suburb of Semaphore Park is 58.9%, which represents the proportion of working-age residents who are either employed or actively seeking work. This moderate participation rate suggests some residents may face barriers to workforce entry. The local rate trailing the Greater Adelaide average of 66.6%, suggesting potential for increased workforce participation.
Which industries are over-represented in the suburb of Semaphore Park's employment market?
The suburb of semaphore park shows notable specialization in construction, which employs 10.7% of the local workforce compared to 8.7% regionally. This moderate specialization indicates some local strength in the sector.
What are the employment growth prospects for the suburb of Semaphore Park?
Based on Jobs and Skills Australia projections applied to the suburb of Semaphore Park'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 suburb of Semaphore Park compare nationally?
The suburb of semaphore park's employment market shows below-average performance in national comparisons. While employment opportunities exist, the area faces more challenges than many 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 Semaphore Park?
Skilled workers will find good opportunities in the suburb of Semaphore Park, with skilled sectors accounting for 36.6% of employment. Key sectors for skilled workers include health care & social assistance (15.1%), education & training (10.6%), and professional & technical (6.8%). With projected employment growth of 6.4% over five years, demand for skilled workers is expected to remain strong.

EarningsHousehold Income in Semaphore Park

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Median household income in Semaphore Park is $1,262 a week (about $66,000 a year), with median personal income at $656 a week. ATO records put median taxable income at $46,765 a year against an average of $62,382. 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

AreaSearch's latest postcode level ATO data for financial year 2023 reveals that income in the suburb of Semaphore Park is below the national average, with the median assessed at $46,765 while the average income stands at $62,382. 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 financial year 2023, current estimates would be approximately $51,521 (median) and $68,726 (average) as of March 2026. From the 2021 Census, household, family and personal incomes in Semaphore Park all fall between the 17th and 20th percentiles nationally.

Income brackets indicate 25.8% of the population (1,132 individuals) fall within the $1,500 - 2,999 income range, aligning with the surrounding region where this cohort likewise represents 31.8%. Housing affordability pressures are severe, with only 82.4% of income remaining, ranking at the 17th percentile and the area's SEIFA income ranking places it in the 4th decile.

Frequently Asked Questions - Income

What is the median taxable income in the suburb of Semaphore Park?
Based on Wage Price Index adjustments to March 2026, the estimated median taxable income in the suburb of Semaphore Park is approximately $51,521. The official ATO data from FY-23 recorded a median of $46,765.
What is the average taxable income in the suburb of Semaphore Park?
Based on Wage Price Index adjustments to March 2026, the estimated average taxable income in the suburb of Semaphore Park is approximately $68,726. The official ATO data from FY-23 recorded an average of $62,382.
How does the median taxable income in the suburb of Semaphore Park compare to the region?
Based on Wage Price Index adjustments to March 2026, the estimated median taxable income in the suburb of Semaphore Park is approximately $51,521 compared to $60,382 in Greater Adelaide. The official ATO data from FY-23 shows $46,765 and $54,808 respectively.
How does the average taxable income in the suburb of Semaphore Park compare to the region?
Based on Wage Price Index adjustments to March 2026, the estimated average taxable income in the suburb of Semaphore Park is approximately $68,726 compared to $73,651 in Greater Adelaide. The official ATO data from FY-23 shows $62,382 and $66,852 respectively.
What are the main income cohorts in the suburb of Semaphore Park according to the 2021 Census?
As per the 2021 Census, the income bracket containing the largest proportion (~25.8% / 1,132 persons) of the suburb of Semaphore Park's population is the $1,500 - 2,999 cohort.
How do the main income cohorts in the suburb of Semaphore Park compare to the region?
The largest income cohort in the suburb of Semaphore Park is the $1,500 - 2,999 group, representing about 25.8% 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 Semaphore Park according to the 2021 Census?
The 2021 Census data indicates that the median household income in the suburb of Semaphore Park is $1,262/wk.
What is the median family income in the suburb of Semaphore Park according to the 2021 Census?
According to the 2021 Census, the median family income in the suburb of Semaphore Park is $1,866/wk.
What is the median personal income in the suburb of Semaphore Park according to the 2021 Census?
The 2021 Census shows that the median personal income in the suburb of Semaphore Park is $656/wk.
How does the suburb of Semaphore Park's income rank nationally?
The suburb of Semaphore Park's income level is lower than average on a national basis according to the latest ATO data aggregated by AreaSearch for FY-23. The suburb of Semaphore Park's median income among taxpayers is $46,765 and the average income stands at $62,382, 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 $51,521 (median) and $68,726 (average) as of March 2026.
What is the disposable income in the suburb of Semaphore Park?
The estimated disposable income in the suburb of Semaphore Park is $4,508 per year according to AreaSearch analysis.
How does the suburb of Semaphore Park's disposable income compare to the region?
The suburb of semaphore park's disposable income is $4,508 compared to $5,698 for Greater Adelaide, based on AreaSearch analysis.

Housing StockHousing & Dwellings in Semaphore Park

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Semaphore Park had 1,891 occupied dwellings at the 2021 Census, 54% detached houses and 5% apartments. 30% are owned with a mortgage, 39% rented and 31% owned outright. At that Census the median rent was $250 a week and the median mortgage repayment $1,786 a month. Rent absorbs 19.8% of household income here and mortgage repayments 32.7%. Dwelling stock, tenure and housing costs are 2021 Census measures — the only source that counts dwellings at this boundary size.

Detail

Dwelling structure within Semaphore Park, as evaluated at the latest Census, comprised 54.0% houses and 46.0% other dwellings (semi-detached, apartments, 'other' dwellings), in comparison to Adelaide metro's 75.2% houses and 24.9% other dwellings. Meanwhile, the level of home ownership within Semaphore Park was in line with that of Adelaide metro, at 30.9%, with the remainder of dwellings either mortgaged (30.2%) or rented (38.9%). The median monthly mortgage repayment in the area was well above the Adelaide metro average at $1,786, while the median weekly rent figure was recorded at $250, compared to Adelaide metro's $1,562 and $320.

Nationally, Semaphore Park's mortgage repayments are lower than the Australian average of $1,863, while rents are substantially below the national figure of $375.

Frequently Asked Questions - Housing

What percentage of homes are owned vs rented in the suburb of Semaphore Park?
In the suburb of Semaphore Park, 30.9% of homes are owned outright, 30.2% are owned with a mortgage, and 38.9% are rented.
What percentage of dwellings in the suburb of Semaphore Park are houses?
According to the latest data, 54.0% of dwellings in the suburb of Semaphore Park are houses.
What percentage of dwellings in the suburb of Semaphore Park are apartments or units?
In the suburb of Semaphore Park, 5.2% of dwellings are apartments or units, with an additional 39.8% being semi-detached dwellings.
What is the level of outright home ownership in the suburb of Semaphore Park?
Outright home ownership in the suburb of Semaphore Park stands at 30.9%, compared to 32.1% in Greater Adelaide.
What is the median monthly mortgage repayment in the suburb of Semaphore Park?
The median monthly mortgage repayment in the suburb of Semaphore Park is $1,786, compared to $1,562 in Greater Adelaide.
What is the median weekly rent in the suburb of Semaphore Park?
The median weekly rent in the suburb of Semaphore Park is $250, compared to $320 in Greater Adelaide.
What is the distribution of rental prices in the suburb of Semaphore Park?
In the suburb of Semaphore Park, 29.7% of rentals are $0-149/week, 42.9% are $150-349/week, 27.0% are $350-649/week, 0.4% are $650-949/week, and 0.0% are $950+/week.
What is the average monthly housing cost in the suburb of Semaphore Park?
The aggregate monthly housing cost in the suburb of Semaphore Park is $960, which represents the average monthly cost across all housing types.
What percentage of income do residents spend on housing in the suburb of Semaphore Park?
In the suburb of Semaphore Park, households with mortgages typically spend 32.7% of their income on mortgage repayments, while renters spend 19.8% of their income on rent.
How crowded are homes in the suburb of Semaphore Park?
The average persons per bedroom ratio in the suburb of Semaphore Park is 0.7, indicating the level of household density.
How does housing affordability in the suburb of Semaphore Park compare to the region?
Housing affordability in the suburb of Semaphore Park shows mortgage holders spending 32.7% of income on repayments (vs 23.3% regionally), while renters spend 19.8% of income on rent (vs 20.7% regionally).
What types of dwellings are most common in the suburb of Semaphore Park?
The dwelling mix in the suburb of Semaphore Park consists of 54.0% detached houses, 39.8% semi-detached dwellings, 5.2% apartments, and 1.0% other dwelling types.
What is the weighted average housing cost based on tenure mix in the suburb of Semaphore Park?
Accounting for the local ownership mix, the weighted average monthly housing cost is approximately $960. This accounts for outright owners paying no housing costs, mortgage holders paying $1,786/month, and renters paying $1,082/month.
How affordable is housing in the suburb of Semaphore Park relative to local incomes?
Housing in Semaphore Park consumes approximately 17.6% of median household income ($5,464 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 Semaphore Park?
Recent development applications in Semaphore Park show attached dwellings contributing 60% of approvals compared to 46% of existing stock, while detached houses represent 40% of applications versus 54% of current dwellings. This suggests increasing densification. Housing density growth is around the national average.

HouseholdsHousehold Composition in Semaphore Park

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Semaphore Park counted 1,891 households at the 2021 Census, averaging 2.2 people each. 22% are couples with children, fewer than in 80% of areas nationally, against 25% couples without children. 36% of households are people living alone, and families average 1.7 children. Household and family composition is measured only by the Census, so these are 2021 figures.

Detail

Family households dominate at 60.9% of all households, comprising 22.1% couples with children, 24.5% couples without children, and 13.2% single parent families. Non-family households make up the remaining 39.1%, with lone person households at 36.4% and group households comprising 2.6% of the total. The median household size of 2.2 people is smaller than the Greater Adelaide average of 2.5.

Frequently Asked Questions - Households

How many households are in the suburb of Semaphore Park?
As of the 2021 Census, the suburb of Semaphore Park had 1,891 households. Based on population growth patterns, this has decreased by approximately 3.3% to an estimated 1,829 households today.
What is the typical household size?
The median household size in the suburb of Semaphore Park 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 60.9% of all households. The remaining households consist of lone person households (36.4%), group households (2.6%), and other household types (0.0%).
How are families structured in the area?
Among the 1,151 family households, 22.1% are couples with children, 24.5% are couples without children at home, and 13.2% are single parent families. This mix shapes local demand for schools, family services, and housing types.
How does the suburb of Semaphore Park compare to regional household patterns?
Compared to Greater Adelaide, the suburb of Semaphore Park shows distinct household patterns. Lone person households are notably over-represented at 36.4% (versus 27.7% regionally). Conversely, family households are under-represented at 60.9% compared to the regional 68.6%. This higher proportion of single-person households drives demand for smaller dwellings and different community services.
What is the average family size?
Families in the suburb of Semaphore Park have an average of 1.7 children, slightly above the Greater Adelaide average of 1.5. This influences local demand for child-related services and larger family homes.
What are the marriage patterns in the suburb of Semaphore Park?
Marriage patterns reveal 38.7% of the adult population are currently married, while 35.8% 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 36.4% of all households in the suburb of Semaphore Park, 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 2.6% of households, well below the Greater Adelaide average of 3.7%. This low rate suggests limited student or young professional shared accommodation.
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EducationSchools & Education in Semaphore Park

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22.1% of adults in Semaphore Park hold a university qualification, including 15.9% with a bachelor degree and 4.2% with postgraduate qualifications. A further 25.4% hold a vocational qualification. 1 school serves the area, with 402 enrolment places and an average ICSEA of 1,021 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

Educational qualifications in Semaphore Park trail regional benchmarks, with 22.1% of residents aged 15+ holding university degrees compared to 30.4% in Australia. This gap highlights potential for educational development and skills enhancement. Bachelor degrees lead at 15.9%, followed by postgraduate qualifications (4.2%) and graduate diplomas (2.0%). Trade and technical skills feature prominently, with 35.7% of residents aged 15+ holding vocational credentials – advanced diplomas (10.3%) and certificates (25.4%). Educational participation is notably high, with 25.0% of residents currently enrolled in formal education. This includes 9.2% in primary education, 6.0% in secondary education, and 4.6% pursuing tertiary education.

Frequently Asked Questions - Education

What percentage of people in the suburb of Semaphore Park have university qualifications?
22.1% of people aged 15 and over in the suburb of Semaphore Park have university qualifications, compared to 28.9% in the broader region.
What percentage of people in the suburb of Semaphore Park have no formal qualifications?
42.1% of people aged 15 and over in the suburb of Semaphore Park have no formal qualifications, compared to 39.0% regionally.
How does the suburb of Semaphore Park's education level compare to national averages?
The suburb of semaphore park ranks in the 43th 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 Semaphore Park?
The most common qualifications in the suburb of Semaphore Park are: Certificate (25.4%), Bachelor Degree (15.9%), Advanced Diploma (10.3%).
What proportion of the suburb of Semaphore Park's population is currently attending educational institutions?
25.0% of the population in the suburb of Semaphore Park is currently engaged in formal education, with 9.2% in primary school, 6.0% in secondary school, 4.6% at university.
What is the ICSEA score for schools in the suburb of Semaphore Park?
The average ICSEA (Index of Community Socio-Educational Advantage) score for schools in the suburb of Semaphore Park is 1021, indicating average socio-educational advantage (national average is 1000).
How many schools are located within the suburb of Semaphore Park?
There are 1 schools within the suburb of Semaphore Park, with a combined enrollment of approximately 402 students.
What types of schools are available in the suburb of Semaphore Park?
The suburb of semaphore park includes 1 primary school.

Schools Detail

AmenitiesServices & Amenities in Semaphore Park

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Getting AroundTransport & Commuting in Semaphore Park

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Public transport in Semaphore Park reaches 25 stops on 12 routes, timetabled for about 410 services a week. The typical home sits about 160 m from its nearest stop. Households keep an average of 1.1 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 analysis reveals 25 active transport stops operating within Semaphore Park comprising a mix of buses. These stops are serviced by 12 individual routes, collectively providing 411 weekly passenger trips. Transport accessibility is rated as excellent, with residents typically located 155 meters from the nearest transport stop. As a primarily residential area, most residents commute outward - car remains the dominant mode at 91%. Vehicle ownership averages 1.1 per dwelling, below the regional average. A relatively low 12.3% of residents work from home (2021 Census; may reflect COVID-19 conditions).

Service frequency averages 58 trips per day across all routes, equating to approximately 16 weekly trips per individual stop.

Frequently Asked Questions - Transport

How many public transport stops are in Semaphore Park?
There are 25 public transport stops within the suburb of Semaphore Park.
How frequent are the transport services in Semaphore Park?
the suburb of Semaphore Park has 411 weekly trips across 12 routes, averaging 58 trips per day.
How far are residents from public transport in Semaphore Park?
On average, residential properties are 155 meters from the nearest transport stop.

Transport Stops Detail

HealthcareHealth Services in Semaphore Park

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60.7% of residents in Semaphore Park report no long-term health condition, a less healthy profile than 84% of areas nationally. 10.0% need daily assistance with core activities, and 51.7% hold private health cover. The standardised death rate runs at 6.7 per 1,000 residents. Health conditions, assistance needs and insurance are 2021 Census measures; the death rate comes from current ABS releases.

Detail

Health data reveals substantial challenges facing Semaphore Park, based on AreaSearch's assessment of mortality rates and chronic condition prevalence with prevalence of common health conditions notable across both younger and older age cohorts , and the rate of private health cover found to be relatively low at approximately 52% of the total population (~2,268 people). The most common medical conditions in the area were found to be arthritis and mental health issues, impacting 10.9 and 9.6% of residents, respectively, while 60.7% declared themselves as completely clear of medical ailments compared to 67.9% across Greater Adelaide.

The working-age population faces notable health challenges with elevated chronic condition rates. The area has 25.8% of residents aged 65 and over (1,132 people), which is higher than the 19.2% in Greater Adelaide. Health outcomes among seniors present some challenges, with national rankings broadly in line with the general population.

Frequently Asked Questions - Health

How many people in the suburb of Semaphore Park have private health insurance?
Around 51.7% of people in the suburb of Semaphore Park 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 Semaphore Park?
In the suburb of Semaphore Park, 10.0% 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 Semaphore Park?
8.6% of people in the suburb of Semaphore Park 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 Semaphore Park?
Diabetes affects 5.2% of the the suburb of Semaphore Park 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 Semaphore Park?
4.9% of people in the suburb of Semaphore Park have heart disease. Across the region of Greater Adelaide, 3.8% of the population is affected by heart disease.
How does the suburb of Semaphore Park compare to the region in terms of overall private health coverage?
In the suburb of Semaphore Park, 51.7% 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 Semaphore Park

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Semaphore Park is largely Australian-born, at 79.2% of residents, with 10.7% speaking a language other than English at home. The largest reported ancestries are English (30.2%) and Australian (24.9%). Ancestry, language and country of birth are counted only by the Census, so these are 2021 figures.

Detail

Semaphore Park was found to be roughly in line with the wider region's average in terms of cultural diversity, with 79.2% of its population born in Australia, 88.8% being citizens, and 89.3% speaking English only at home. The main religion in Semaphore Park was found to be Christianity, which makes up 46.0% of people in Semaphore Park. However, the most apparent overrepresentation was in Islam, which comprises 1.2% of the population, compared to 3.0% across Greater Adelaide. In terms of ancestry (country of birth of parents), the top three represented groups in Semaphore Park are English, comprising 30.2% of the population, Australian, comprising 24.9% of the population, and Irish, comprising 7.9% of the population.

Additionally, there are notable divergences in the representation of certain other ethnic groups: Polish is notably overrepresented at 1.7% of Semaphore Park (vs 1.0% regionally), Russian at 0.7% (vs 0.3%) and Welsh at 0.8% (vs 0.6%).

Frequently Asked Questions - Diversity

What is the level of cultural diversity in the suburb of Semaphore Park?
Semaphore Park was found to be roughly in line with the wider region's average in terms of cultural diversity, with 79.2% of its population born in Australia, 88.8% being citizens, and 89.3% speaking English only at home.
What is the most common religion in the suburb of Semaphore Park?
The main religion in Semaphore Park was found to be Christianity, which makes up 46.0% of people in Semaphore Park. However, the most apparent overrepresentation was in Islam, which comprises 1.2% of the population, compared to 3.0% across Greater Adelaide.
What are the top countries of origin in the suburb of Semaphore Park?
In terms of ancestry (country of birth of parents), the top three represented groups in Semaphore Park are English, comprising 30.2% of the population, Australian, comprising 24.9% of the population, and Irish, comprising 7.9% of the population. Additionally, there are notable divergences in the representation of certain other ethnic groups: Polish is notably overrepresented at 1.7% of Semaphore Park (vs 1.0% regionally), Russian at 0.7% (vs 0.3%) and Welsh at 0.8% (vs 0.6%).
How does the percentage of people born overseas compare to the regional average?
20.8% of the the suburb of Semaphore Park population was born overseas, compared to 28.7% regionally.
What percentage of the the suburb of Semaphore Park population speaks a language other than English at home?
10.7% of the population in the suburb of Semaphore Park speaks a language other than English at home, compared to 22.2% in the wider region.
How many people in the suburb of Semaphore Park identify as Australian Aboriginal?
1.7% of the the suburb of Semaphore Park population identifies as Australian Aboriginal, compared to 1.2% in the region.
What is the citizenship status of the population in the suburb of Semaphore Park?
88.8% of the the suburb of Semaphore Park population holds citizenship, compared to 86.3% in the wider region.

Age StructureAge Profile of Semaphore Park

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The median resident of Semaphore Park is 46, older than 82% of areas nationally. 20.8% 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

At 46 years, Semaphore Park's median age is significantly above the Greater Adelaide average of 39 similarly considerably older than Australia's 38 years. The age profile shows 75 - 84 year-olds are particularly prominent (10.0%), while the 25 - 34 group is comparatively smaller (11.3%) than in Greater Adelaide. In the period since 2021, the 75 to 84 age group has grown from 7.5% to 10.0% of the population. Conversely, the 65 to 74 cohort has declined from 13.8% to 11.8% and the 55 to 64 group dropped from 13.4% to 11.8%.

Population forecasts for 2041 indicate substantial demographic changes for Semaphore Park. The 85+ cohort shows the strongest projected growth at 96%, adding 168 residents to reach 344. Senior residents (65+) will drive 66% of population growth, underscoring demographic aging trends. On the other hand, population declines are projected for the 55 to 64 and 0 to 4 cohorts.

Frequently Asked Questions - Age

What is the median age in the suburb of Semaphore Park?
According to the latest data, the median age in the suburb of Semaphore Park is 46 years.
How does the suburb of Semaphore Park's median age compare to broader areas?
At 46 years, Semaphore Park is 7 years older than the Greater Adelaide average (39 years) and 8 years older than the national average (38 years).
What age groups are over-represented in the suburb of Semaphore Park?
The most over-represented age group in the suburb of Semaphore Park compared to the Greater Adelaide region is the 75 - 84 group, making up 10.0% of the population.
What age groups are under-represented in the suburb of Semaphore Park?
The most under-represented age group in the suburb of Semaphore Park compared to the Greater Adelaide region is the 25 - 34 group, making up 11.3% of the population.
Are there age groups with notable population variances?
Yes, certain age groups in the suburb of Semaphore Park show significant variance compared to the Greater Adelaide region. The most over-represented age groups are 85+ year-olds (4.0% vs 2.6%) and 75-84 year-olds (10.0% vs 6.7%).
What is the percentage of children (0-14 years) in the suburb of Semaphore Park?
The percentage of children aged 0-14 years in the suburb of Semaphore Park is 16.4%.
What is the percentage of older people (65+ years) in the suburb of Semaphore Park?
The percentage of people aged 65 and over in the suburb of Semaphore Park is 25.8%.

Data & MethodBoundaries, Sources & Method for Semaphore Park

Data currency Refreshed

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

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

The ledger — source, cycle and currency by section

Section Source & update cycle Currency
Updated within the last 12 months 9 sections
Population ABS, GNAF, Geoscience Australia Annual (ABS ERP) May 2026 3 months ago headline measures · 2021 Census baseline
Re-based to the ABS Estimated Resident Population (June 2025 release) and updated with new dwellings from GNAF address data. Current to May 2026, with the 2021 Census supplying the small-area baseline.
Age profile ABS, Geoscience Australia, State governments Annual May 2026 3 months ago headline measures · 2021 Census baseline
Age cohorts are re-based to the latest ABS population estimates and state projections, current to May 2026. Each cohort is held as a Census baseline and a current estimate.
Development & approvals ABS, GNAF Monthly (ABS approvals) Jun 2026 2 months ago headline measures · May 2026 baseline
Property sales & rents Valuer General, Rental Board, ABS Weekly sales, quarterly rents Aug 2026 this month all 21 measures
Sales from the state Valuer General register, refreshed weekly, and rents from quarterly rental bond lodgements. Both are read live each time this page loads, current to Aug 2026.
Infrastructure projects Infrastructure Australia, State agencies, Local governments Daily Aug 2025 about a year 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 Aug 2025.
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 — 27 validated new addresses here. The headline figure is therefore a current estimate for May 2026, not a 2021 count (4,541 at the 2021 Census → 4,391 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 (SAL41330). 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 Semaphore Park 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 Semaphore Park 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 Semaphore Park 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 (Aug 2025) 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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