Largs Bay flood map & planning overlays

A planning-constraint profile of Largs Bay (City of Port Adelaide Enfield, SA) - 2.44 km², mapped from live council and state overlay data. This suburb is highly constrained.
Profile updated 3 October 2026.

Suburb-wide figures; the free map shows which overlays touch your lot.

Planning schematicLargs Bay

Constraint readout

2.44 km² - this suburb is highly constrained by planning overlays.

Flood overlay 25%

1.4× council avg (17%) · #12 of 48 mapped council suburbs

Bushfire-prone 0%

· #1 of 48 mapped council suburbs

Environmental22%

2.4× council avg (9%) · #11 of 48 in council

Heritage sites 13 Character 4% Aircraft seen below 3,000 ft 82% Mostly General Neighbourhood Flood 12th most affected of 48 →

Elevation hillshade with street names, clipped to Largs Bay's boundary, with the flood, bushfire and environmental overlays drawn on top. Magenta is where aircraft were observed in the sampled period, brightest below 3,000 ft.

Nearby suburbs, nearest first

Aircraft noise and flight paths over Largs Bay

Two different things, kept apart on purpose. The ANEF contour is the planning instrument - a forecast published per airport that planning schemes use to control noise-sensitive development. Observed overflight is what a sampled aircraft-tracking feed actually recorded over the suburb - where aircraft flew, how low and how often.

Observed overflight - sampled 4 Sep to 3 Oct 2026

Under observed aircraft

92%

of the suburb, at or below 10,000 ft

Below 3,000 ft

82%

of the suburb's area

Lowest measured

500 ft

averaging 3,500 ft

Busiest square

~2 a day

2 a day below 3,000 ft · ±16% · area average
typical observed square 1 a day

Night movements: observed, lowest 4,000 ft - night is sampled as often as day, but night traffic is light, so this is a floor and no rate can be put on it.

Traffic is sampled rather than watched continuously, so every figure is a floor: aircraft not captured between samples are not represented. Rates are per 500 m square - the busiest square in the suburb, not a count of flights over the suburb - and a square is only rated where enough traffic was seen to measure it. Altitudes are above mean sea level. Flight paths change with runway use, weather, season and airspace design. This is a record of observed traffic; it is not a noise contour and not a planning control.

Largs Bay at a glance

Parcels 1,955 Median lot 611 m² Bus stops 13

How Largs Bay is zoned

General Neighbourhood 39%

Established Neighbourhood 21%

Strategic Employment 20%

Open Space 15%

Coastal Waters and Offshore Islands 3%

Suburban Neighbourhood 1%

Selling in Largs Bay? The zone and overlays on this page are the Planning and Design Code controls a Form 1 vendor's statement has to disclose.

Across its 2.44 km², Largs Bay is highly constrained by planning overlays. About 25% of the suburb sits within a mapped flood overlay. There are 13 heritage-listed sites on record, and the dominant land-use zone is General Neighbourhood. The median lot measures about 611 m² across 1,955 parcels.

Who lives in Largs Bay

Census 2021 figures published by the ABS for the Largs Bay suburb boundary itself, not a wider region.

Population

4,104

usual residents, 2021

Median age

years

Median household income

$1,886

per week, City of Port Adelaide Enfield suburb typical $1,459

Median rent

$315

per week, City of Port Adelaide Enfield suburb typical $307

Median mortgage

$1,800

per month

Household size

2.4

people, average

Socio-economic standing

ABS SEIFA 2021 ranks every Australian suburb. Decile 1 is the most disadvantaged tenth of the country, decile 10 the least.

Advantage and disadvantage (IRSAD) Decile 7

most disadvantagedleast disadvantaged

Score 1017, and decile 8 within South Australia. The national average is 1000.

Relative disadvantage (IRSD) Decile 7

most disadvantagedleast disadvantaged

Age profile

Share of Largs Bay's 4,104 residents in each ABS age band.

0-4 5.2%

5-14 9.8%

15-19 5.2%

20-24 5.4%

25-34 10.0%

35-44 12.0%

45-54 14.5%

55-64 16.5%

65-74 11.3%

75-84 5.3%

85+ 4.9%

Population trend, 2001 to 2025

Estimated resident population of Largs Bay - Semaphore, the wider ABS statistical area containing Largs Bay. There is no annual population series published at suburb level, so this describes the surrounding area rather than Largs Bay itself.

13,971 in 2001 to 15,765 in 2025, up 13%.

Source: ABS Census 2021 and SEIFA 2021 (Suburbs and Localities), Regional Population (SA2), CC BY 4.0. Small counts are randomly adjusted by the ABS.

Largs Bay data sources and coverage

“Not mapped” means we hold no source layer for this suburb - never an all-clear.

Dataset	Coverage	Publisher
Flood mapping	Mapped	the South Australian Planning and Design Code and Location SA spatial data
Bushfire-prone mapping	Mapped	the South Australian Planning and Design Code and Location SA spatial data
Zoning	Mapped	the South Australian Planning and Design Code and Location SA spatial data
Heritage and environment	Mapped where published	the South Australian Planning and Design Code and Location SA spatial data
Aircraft noise contours (ANEF)	Not held	the South Australian Planning and Design Code and Location SA spatial data, Defence
Observed flight paths	Observed	adsb.lol, under the Open Database License
Demographics	Available	Australian Bureau of Statistics (2021 Census and SEIFA)

Profile last materially updated 3 October 2026. See the methodology and full source list. Source data changes over time and critical decisions should be checked with the responsible authority.

Check a specific Largs Bay address

See exactly which overlays touch a single property - the interactive map is free. Need it on paper? A full planning PDF is just $9.

Aircraft have been seen below 3,000 ft over about 82% of Largs Bay. The report's Aircraft Overflight page narrows that to the address itself: how many aircraft a day, how low, and at what heights.

Building or pricing a slab? The $119 geotechnical desktop report covers geology, soils, bores and an indicative AS 2870 site class for a Largs Bay lot.

See what's in the $9 report →

Largs Bay planning - frequently asked

Is Largs Bay flood-prone?

About 25% of Largs Bay falls within a mapped flood overlay, against the council-wide suburb average of 17%.

Is Largs Bay bushfire-prone?

Bushfire mapping covers Largs Bay and little to none of it is mapped as bushfire-prone.

Is Largs Bay under a flight path?

Aircraft were observed below 3,000 ft over about 82% of Largs Bay, and over about 92% at any altitude up to 10,000 ft, in the period sampled (4 Sep 2026 to 3 Oct 2026). The lowest measured aircraft was at 500 ft, with an average of 3,500 ft. At the busiest point in the suburb about 2 aircraft a day were recorded passing over one 500 m square. Traffic is sampled rather than watched continuously and flight paths change with runway use, weather and season; the ANEF contour is the planning instrument.

What is the zoning in Largs Bay?

The dominant planning zone in Largs Bay is General Neighbourhood, though the suburb also includes Established Neighbourhood and Strategic Employment.

Does Largs Bay have heritage-listed places?

Largs Bay has 13 heritage-listed places on record.

What is the typical lot size in Largs Bay?

Across 1,955 surveyed parcels in Largs Bay, the median lot size is about 611 m².

Does Largs Bay have a train station?

There is no train station inside Largs Bay itself. The suburb is served by 13 bus stops.

What is the population of Largs Bay?

At the 2021 Census Largs Bay had 4,104 usual residents, with a median age of 46 and an average household size of 2.4 people. The wider Largs Bay - Semaphore statistical area, which contains Largs Bay, went from 13,971 people in 2001 to 15,765 in 2025, up 13%.

Is Largs Bay an advantaged suburb?

On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Largs Bay scores 1017 and sits in decile 7 of 10 nationally and decile 8 within South Australia (decile 1 is the most disadvantaged tenth, decile 10 the least).

What is the median household income in Largs Bay?

Median household income in Largs Bay was $1,886 a week at the 2021 Census, against $1,459 for the typical suburb in City of Port Adelaide Enfield. Median rent was $315 a week and the median mortgage repayment $1,800 a month.

Compare nearby suburbs

Nearby suburb	Distance	Flood mapped	Bushfire-prone
Peterhead	0.6 km	38%	0%
Birkenhead	1.2 km	22%	0%
Largs North	1.2 km	18%	0%
Exeter	1.3 km	24%	0%
Semaphore	1.7 km	23%	0%
Port Adelaide	1.7 km	32%	0%
Glanville	1.9 km	41%	0%
New Port	2.1 km	17%	0%
Taperoo	2.4 km	15%	0%
Ethelton	2.4 km	35%	0%

See all City of Port Adelaide Enfield suburb profiles →