Largs Bay (Semaphore area)
South Australia · Port Adelaide - West, Adelaide - West
Live · ABS ERP June 2025
Children under 15 are 14.3% of residents, against 17.0% in the middle South Australia area (Census 2021). The median age is 45, higher than the middle South Australia area (42, Census 2021).
Largs Bay (Semaphore area) has 5 schools (3 government, 2 non-government; ACARA School Profile 2025) and 7 NQS-rated childcare services (ACECQA register). Population is 15,765 (ABS ERP June 2025).
Largs Bay (Semaphore area) at a glance
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Boundaries: ABS Suburbs & Localities 2021. School pins are ACARA's published locations. Map © OpenStreetMap contributors, © CARTO. Open the full SA map →
How the Family-Fit score is built66/100
Family-Fit score
Method published in fullStrong for families - strongest on getting around, weakest on families already here.
- Schools in the area · 20% of the score
- 71/100
- Childcare & early years · 15% of the score
- 70/100
- Everyday amenities · 15% of the score
- 71/100
- Getting around · 15% of the score
- 100/100
- Housing affordability · 15% of the score
- 48/100
- Families already here · 10% of the score
- 42/100
- Socio-economic profile · 10% of the score
- 44/100
SA median 68/100
5 schools in this SA2 · average government-school ICSEA 957
SA median 70/100
7 NQS-rated services nearby
SA median 78/100
12 parks · 2 GPs · 1 supermarket · 14 playgrounds
SA median 100/100
4 train stations in this SA2 (no train-time data for SA yet)
SA median 53/100
Paying over 30% of income on housing: 11.9% of mortgage-holding households, 32.4% of renting households
SA median 58/100
14.3% of residents are children aged 0–14 · 36.8% of families are couples with children
SA median 33/100
SEIFA IRSAD decile 5 of 10 nationally
The grey marker on each bar is the median across the 164 South Australia areas we publish a score for (state median overall: 63/100). It is context, not a pass mark.
How this score is calculated
Each published figure for the Largs Bay - Semaphore SA2 is mapped onto 0–100 by fixed thresholds, then weighted. Inputs with no data here are dropped and the rest rescaled - never scored as zero. Every threshold and weight →
School results, crime and flood or bushfire overlays are not graded into this score. Limits of the score →
What families notice
What families notice
- 12 parks mapped inside this SA2 (OpenStreetMap).
- 5 schools sit inside this SA2 - more choice than most areas this size.
- We don't have official school-zoning data for SA yet (only VIC, NSW and QLD) - confirm zoning directly with the school or department.
- We don't yet have official crime data for SA (only NSW and VIC) - that's a data gap on our side, not a claim this area is safe.
- About 32% of renters here spend over 30% of income on rent - above the standard affordability guideline (ABS Census 2021).
Living in Largs Bay - Semaphore: family snapshot
Living in Largs Bay - Semaphore
A mid-sized suburb. Strong United Kingdom communities here (2021 Census). Many childcare options nearby - 7 NQS-rated services. Mostly detached family homes.
Largs Bay (Semaphore area) compared with South Australia10 measures
| Measure | Largs Bay - Semaphore | SA average | Against SA |
|---|---|---|---|
| Children aged 0 to 4 | 4.9% | 5.3% | About the same |
| Children aged 5 to 14 | 9.4% | 11.7% | Lower |
| Couple families with children | 36.8% | 40.7% | Lower |
| One-parent families | 18.4% | 16.7% | Higher |
| Homes owned outright | 30.2% | 33.1% | Lower |
| Homes owned with a mortgage | 39.3% | 36.5% | Higher |
| Homes rented | 29.4% | 27.7% | Higher |
| Separate houses | 69.8% | 78.8% | Lower |
| Flats and apartments | 13.3% | 6.5% | Higher |
| Born overseas | 18.4% | 24.1% | Lower |
Source: ABS Census 2021. The SA figure is the population-weighted average of the 172 SA areas with a published value. "Higher" and "Lower" describe the number only.
About this area and its boundary
Largs Bay - Semaphore is a locality in the Port Adelaide - West area of South Australia. This profile draws on ABS population and Census figures, the ACARA school register and ACECQA childcare ratings for the Largs Bay - Semaphore SA2.
15,765 residents - 14.3% are children under 15, median age 45, the largest overseas-born community is United Kingdom (8.1%).
Why “Largs Bay - Semaphore”? The ABS divides the larger suburb of Largs Bay into several statistical areas (SA2s); this profile covers one part of it. Other parts are listed further down. SA2 boundaries don’t always match suburb boundaries. It covers the gazetted suburbs of Largs Bay, Semaphore, Birkenhead, Ethelton, Peterhead, Exeter, Semaphore South and Glanville and 1 more localities, drawn separately on the map above.
Property market
No free house sale price or 3-bedroom house rent is published for this area. 29.4% of homes are rented, against 27.7% across South Australia.
Homes and households
Source: ABS Census 2021. Where the shares do not add to 100%, the rest is "other" or "not stated".
Housing cost pressuremortgage and rent against income
Housing cost pressure
In Largs Bay - Semaphore, 32.4% of renting households spend more than 30% of their income on rent, and 11.9% of households with a mortgage spend more than 30% on repayments - the ABS's stretched-household threshold (Census 2021).
ABS published figures, not our calculation.
- Mortgage over 30% of income
- 11.9%
- Rent over 30% of income
- 32.4%
SA avg 12%
Share of households WITH a mortgage whose repayments take more than 30% of income. That's 293 of 2,237 households with a stated repayment.
SA avg 30.6%
Share of RENTING households whose rent takes more than 30% of income. That's 598 of 1,721 households with a stated rent.
The two figures cover different households (mortgage-holding vs renting), so never add them. How the ABS counts these → Grey marker: SA average (163 for mortgage and 164 for rent). Census 2021 - housing costs have moved since. Not financial advice.
What's being built herenew homes approved, year by year
What's being built here
38 new homes were approved in Largs Bay - Semaphore in the year to June 2025. Councils approved 508 new dwellings here across the 6 years to June 2025 - an approval is permission to build, not a home that exists yet.
Approved in the year to June 2025
Middle SA area: 51
Separate houses
Private sector, over these 6 years
Townhouses & apartments
Private sector, over these 6 years
Counts are for the whole Largs Bay - Semaphore statistical area. What these counts include → Dashed line: the median of 162South Australia areas.
Schools and childcare
5 schools are located in the area. 7 childcare services are on the national register, 7 rated Meeting the National Quality Standard or above.
Government schools in Largs Bay - Semaphore
Free government schools your child may attend. Exact school zones aren’t mapped for SA yet, so we can’t confirm which one is yours.
A picture of students’ family backgrounds (ICSEA) - not a ranking or a quality score.
Fee-paying schools can’t be enrolled in by zone - they’re shown for context, not as the area’s school quality.
We show school intake context and catchments, not exam results. We don’t publish a school ranking.
To look beyond Largs Bay - Semaphore, every South Australia school is on the Australian schools and catchment zones map.
Schools in Largs Bay - Semaphore
- Students
- 626
- ICSEA
- 1067
- Students
- 456
- ICSEA
- 951
- Students
- 418
- ICSEA
- 1018
- Students
- 232
- ICSEA
- 902
- Students
- 230
- ICSEA
- 1048
ICSEA reflects student intake context, not teaching quality (1000 = national average). Source: ACARA School Profile 2025. All SA schools →
Childcare: 7 services
National Quality Standard ratings from the ACECQA register, refreshed Oct 2026. Services are matched by suburb name.
Childcare services, ratings and fees7 services
- Meeting NQSPortside Christian College ELCCentre-Based Care · 120 places · EtheltonRated Dec 2025
- Meeting NQSGoodstart Early Learning Semaphore SouthCentre-Based Care · 115 places · SemaphoreRated Jul 2026
- Meeting NQSLargs Bay Primary School OSHCCentre-Based Care · 100 places · Largs BayRated Jan 2026
- Meeting NQSPortside Christian College OSHCCentre-Based Care · 75 places · New PortRated Apr 2026
- Meeting NQSDominican School OSHCCentre-Based Care · 60 places · SemaphoreRated Jun 2026
- Meeting NQSCamp Australia - Le Fevre Peninsula Primary School OSHCCentre-Based Care · 40 places · BirkenheadRated Dec 2020 · over 3 years old, check for a more recent assessment
- Meeting NQSLe Fevre Kindergarten IncCentre-Based Care · 34 places · BirkenheadRated Sep 2023 · over 3 years old, check for a more recent assessment
- Centre-based day care
- $13.55/hr
- Outside school hours care
- $8.40/hr
Mean hourly fee across CCS-approved services, December quarter 2025 - Dept of Education, © Commonwealth of Australia, CC BY 4.0. Published at SA3 level (a wider area than this suburb's SA2), so it's an average across Port Adelaide - West and surrounds, not this specific service list.
Verify locations before visiting. A rating over 3 years old is flagged. What the NQS ratings mean → Childcare places per child, by suburb →
Who lives here
Fewer people born overseas than South Australia overall: 18.4% of residents, against 24.1% statewide.
Ages of people here
Share of residents in each age band, in years. Source: ABS Census 2021.
How the area is changingCensus 2011 to 2021
Each line is drawn on its own scale, so compare the numbers, not the heights. Source: ABS Census 2011, 2016 and 2021.
Census trends against the middle SA areafull charts
Which way this area is moving
The 2011, 2016 and 2021 Censuses for Largs Bay - Semaphore, counted on today's boundaries.
Since 2011, Largs Bay - Semaphore has grown older.
- People counted
- +302 people since 2011
- Median age
- +4 years since 2011
- Children aged 0–14
- −1.9 pts since 2011
- Born overseas
- −0.3 pts since 2011
- Speak another language at home
- −0.5 pts since 2011
Usual residents counted on Census night.
Half the residents are older than this, half younger.
Share of all residents. The clearest signal of families arriving or moving on.
Share of all residents born outside Australia.
Share of residents who stated a language, speaking one other than English at home.
The dashed line is the median across the South Australia areas we profile. How the three Censuses line up →
Where this year's population change came from+0.60% in a year
Where did the gain come from?
+95Reading the streams: overseas arrivals were the dominant force - more came from abroad than the suburb grew on its own.
Ages against the state average, band by band
Ages of people here
9.4% of people here are school-age children (5–14) - fewer than the South Australia average of 11.7%, and 4.9% are under 5. The median age is 45.
- 0–4 years · before school
- 4.9%
- 5–14 years · school age
- 9.4%
- 15–19 years · teens
- 4.6%
- 20–34 years
- 17.3%
- 35–54 years
- 27.8%
- 55–64 years
- 17.2%
- 65 years and over
- 18.8%
SA avg 5.3%
SA avg 11.7%
SA avg 5.6%
SA avg 19.3%
SA avg 25.3%
SA avg 12.8%
SA avg 20%
Share of all residents of Largs Bay - Semaphore (ABS Statistical Area 2) at the 2021 Census; the grey marker is the South Australia average. How the bands and averages work →
Households and families
Households and families
55% of families here have children living at home - about the South Australia average of 57%. The largest overseas-born communities are United Kingdom (8.1%), New Zealand (1.1%) and Germany (0.7%). 29% of homes are rented.
Family make-up
Share of all families in the area. A small "other family" group the ABS also counts is not shown.
- Couple with children
- 36.8%
- One-parent family
- 18.4%
- Couple, no children
- 43.1%
SA avg 40.7%
SA avg 16.7%
SA avg 41%
What people live in
Share of occupied private dwellings. Other and unstated structures are not shown.
- Separate house
- 69.8%
- Semi-detached / townhouse
- 16.7%
- Flat or apartment
- 13.3%
SA avg 78.8%
SA avg 14.2%
SA avg 6.5%
Owned or rented
Share of occupied private dwellings. Other and unstated tenures are not shown.
- Owned outright
- 30.2%
- Owned with a mortgage
- 39.3%
- Rented
- 29.4%
SA avg 33.1%
SA avg 36.5%
SA avg 27.7%
Figures describe Largs Bay - Semaphore (ABS Statistical Area 2) at the 2021 Census; the grey marker is the South Australia average. How these are counted →
Birthplaces, languages and communities
Who lives in Largs Bay - Semaphore
Top 5 overseas birthplaces shown · 88.8% born in Australia or a country not in the top five.
- United Kingdom · established by 2016
- 8.1%
- New Zealand · established by 2016
- 1.1%
- Germany · established by 2016
- 0.7%
- Italy · established by 2016
- 0.7%
- Philippines · established by 2016
- 0.6%
SA avg 6.3%
SA avg 0.4%
SA avg 0.2%
SA avg 0.7%
SA avg 0.6%
- Nearby
- West Lakes, Port Adelaide and North Haven also have an established United Kingdom community.
- Settlement pattern
- Of overseas-born residents who stated when they arrived, 9.1% arrived in the last 5 years (2016–2021) (SA avg 16.4%) and 66.3% arrived before 2001 (SA avg 52.5%).
- English at home
- Of residents who speak a language other than English at home and stated their English proficiency, 10.6% report speaking English “not well” or “not at all” (SA avg 13%) - a self-reported ABS figure across all languages combined, not a judgement of any one community.
Figures describe Largs Bay - Semaphore (ABS Statistical Area 2) at the 2021 Census. The ABS publishes only the five largest communities per area, so a missing name did not rank in the top five. How these are counted →
Socio-economic index (SEIFA)decile 5 of 10
- Decile (1 lowest, 10 highest)
- Decile 5 of 10
- Where this sits in SA
- bottom 50% of South Australia areas
A relative comparison of the whole area against all of Australia - not a safety, liveability, or school-quality measure. What IRSAD measures → Source: ABS SEIFA 2021, IRSAD index (SA2).
Getting around and lifestyle
1 supermarket, 2 GPs and 12 parks are mapped in the area, and the nearest emergency department is The Queen Elizabeth Hospital, 6.5 km away in a straight line.
Mapped inside the Largs Bay - Semaphore boundary. A zero can mean "not mapped" rather than "not there". Source: © OpenStreetMap contributors.
Train to the city and nearest emergency department
Train to the city
Not publishedSouth Australia publishes its timetable data behind a free developer account we have not yet set up, so we show no travel time here. This is a gap on our side, not a statement about the transport in this area.
Nearest emergency department
MappedThe Queen Elizabeth Hospital · 6.5 km
Straight-line distance from the middle of this area - not a drive time. In an emergency call 000; do not plan around this figure.
Community and recreation
Out with a baby
Public-toilet facilities recorded on the National Public Toilet Map - not every place in the area that will let you change a baby.
About this data
Counts of features tagged in OpenStreetMap inside the Largs Bay - Semaphore boundary. “Middle SA area”: the median of 172 South Australia areas. How these counts and times are made →
Source: © OpenStreetMap contributors · baby-facility counts from the National Public Toilet Map (Continence Foundation of Australia, funded by the Australian Government Department of Health, Disability and Ageing, CC BY 3.0 AU)
Crime & safety in Largs Bay - Semaphore
Official recorded-incident data is only published on this site for NSW and VIC so far - that's a coverage gap on our side, not a claim that Largs Bay - Semaphore is safe. SuburbRadar does not rate suburbs as safe or unsafe. More on crime & safety →
Risks
1 of the 1 planning and hazard records we hold show something in this area: traffic noise. 6 more are not published for SA - treat them as not checked.
Traffic noise
Freeway or highway presentVictoria Road · Port River Expressway · Nelson Street
Each line is the extent of an official record across the whole Largs Bay - Semaphore area - not a risk rating, and a specific address may or may not be affected. Not financial or insurance advice.
All 9 checks and what each one means
Flooding
Not publishedNo free statewide flood overlay is published for SA yet, so we show none. Check the local council's planning maps.
Bushfire
Not publishedWe hold official bushfire mapping for Victoria and New South Wales only - nothing is published here for SA yet. Check the state fire service's mapping.
Heritage controls
Not publishedWe hold official heritage overlay mapping for Victoria and New South Wales only - nothing is published here for SA yet. Check the local council's planning scheme and the state heritage register.
Traffic noise
Freeway or highway presentVictoria Road · Port River Expressway · Nelson Street
3 named roads through this area carry OpenStreetMap's highest classification - a freeway, motorway or major highway, whatever the road is called locally, alongside 9 named main roads. Roads are counted by name, not by mapped segment. Where a home sits relative to them matters far more than the count - a street two blocks back can be quiet.
Aircraft noise
Not publishedWe hold official aircraft-noise mapping for Victoria and New South Wales only - nothing is published here for SA yet. Check the airport's noise contours and the local planning scheme.
Land contamination checks
Not mappedWe hold official contaminated-land overlay mapping for Victoria only - nothing is published here for SA yet. Check the state environment authority's contaminated land register and the local planning scheme.
Acid sulfate soils
Not publishedWe hold acid sulfate soil mapping for Victoria and New South Wales only - nothing is published here for SA yet. Coastal and estuarine land is where these soils occur; check the state's soil mapping and the local planning scheme.
Recorded crime
Not publishedSA does not release the suburb-level incident counts we republish for New South Wales and Victoria, so we show none here.
Social housing
Census figure4.6% rented from a state or territory housing authority · 0.7% from a community housing provider
Share of occupied private dwellings here with a stated tenure (Census 2021). The middle SA area is 2.4% public and 1.0% community, across 166 areas. Listed because families ask; it is a fact about who owns the homes, not a judgement about the people in them.
About this data
Every line is an official published record for the Largs Bay - Semaphore area - we don't rate, score or rank any of them. Where a line is missing, treat it as not checked rather than clear. What each line covers and does not →
Source: ABS Census 2021 (G37 tenure and landlord type) · © OpenStreetMap contributors (ODbL) - road classification
Nearby suburbs
- West Lakes 2.2 km
- Port Adelaide 3.5 km
- North Haven 4.4 km
- Royal Park - Hendon - Albert Park 5.0 km
- Woodville (Cheltenham area) 5.9 km
- Beverley 5.9 km
The six closest profiled areas in South Australia, by distance between area centres.
The suburbs in this area
Everything else on this page is published for Largs Bay - Semaphore as a whole - one ABS statistical area covering 9 separate gazetted suburbs. These are the figures published for each of those suburbs on its own.
| Suburb | Residents Census 2021 | Schools |
|---|---|---|
| Largs Bay | 4,104 | 1 |
| Semaphore | 2,749 | 1 |
| Birkenhead | 1,798 | 1 |
| Ethelton | 1,487 | 0 |
| Peterhead | 1,201 | 0 |
| Exeter | 1,066 | 0 |
| Semaphore South | 1,031 | 1 |
| Glanville | 728 | 0 |
| New Port | 647 | 1 |
Each row is that suburb's own published figure - nothing here is the wider area's number divided up. Resident counts are the Census 2021 usual-resident count for the gazetted suburb, so they will not add up to the population at the top of this page, which is the ABS's later June 2025 estimate for the whole statistical area: a different measure on a different date. Schools are ACARA-registered schools whose published address falls inside the suburb boundary, which is not the same as the school your address is zoned to. No free source publishes suburb-level house medians in South Australia, so no price column is shown - that is our coverage gap, not a statement about the market here. Every other figure on this page - crime & safety, overlays, commute, amenities, projections, the Family-Fit score - is published for the whole statistical area and cannot be separated by suburb.
Other areas in Port Adelaide - Westsorted by growth in one year
- 01Port Adelaide+2.2%12,874 ppl
- 02The Parks+1.5%21,444 ppl
- 03North Haven+1.1%15,635 ppl
- 04Dry Creek - South+0.0%0 ppl
- 05Torrens Island+0.0%5 ppl
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