St Kilda flood map & planning overlays
A planning-constraint profile of St Kilda
(City of Salisbury, SA) - 24.4 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.
Constraint readout
24.4 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to St Kilda'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 St Kilda
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
typical observed square 6 a day
Night movements: observed, lowest 1,000 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.
St Kilda at a glance
How St Kilda is zoned
Selling in St Kilda? 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 24.4 km², St Kilda is highly constrained by planning overlays. About 8% of the suburb sits within a mapped flood overlay, and 9% is flagged bushfire-prone. The dominant land-use zone is Conservation. The median lot measures about 1,510 m² across 146 parcels.
Who lives in St Kilda
Census 2021 figures published by the ABS for the St Kilda suburb boundary itself, not a wider region.
Socio-economic standing
ABS SEIFA 2021 ranks every Australian suburb. Decile 1 is the most disadvantaged tenth of the country, decile 10 the least.
Score 833, and decile 1 within South Australia. The national average is 1000.
Age profile
Share of St Kilda's 88 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Dry Creek - North, the wider ABS statistical area containing St Kilda. There is no annual population series published at suburb level, so this describes the surrounding area rather than St Kilda itself.
0 in 2001 to 0 in 2025.
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.
St Kilda 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 St Kilda 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 56% of St Kilda. 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 St Kilda lot.
See what's in the $9 report →St Kilda planning - frequently asked
Is St Kilda flood-prone?
About 8% of St Kilda falls within a mapped flood overlay, against the council-wide suburb average of 26%.
Is St Kilda bushfire-prone?
Around 9% of St Kilda is mapped as bushfire-prone, compared with a City of Salisbury average of 8%.
Is St Kilda under a flight path?
Aircraft were observed below 3,000 ft over about 56% of St Kilda, and over about 86% 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 1,000 ft. At the busiest point in the suburb about 46 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 St Kilda?
The dominant planning zone in St Kilda is Conservation, though the suburb also includes Infrastructure and Resource Extraction.
Does St Kilda have heritage-listed places?
No heritage-listed places are on record within St Kilda.
What is the typical lot size in St Kilda?
Across 146 surveyed parcels in St Kilda, the median lot size is about 1,510 m². There are also 15 registered easements mapped in the suburb.
What is the population of St Kilda?
At the 2021 Census St Kilda had 88 usual residents, with a median age of 57 and an average household size of 1.6 people.
Is St Kilda an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), St Kilda scores 833 and sits in decile 1 of 10 nationally and decile 1 within South Australia (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in St Kilda?
Median household income in St Kilda was $697 a week at the 2021 Census, against $1,276 for the typical suburb in City of Salisbury. Median rent was $250 a week and the median mortgage repayment $867 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Bolivar | 4.2 km | 30% | 0% |
| Waterloo Corner City of Playford |
4.4 km | 46% | 82% |
| Osborne City of Port Adelaide Enfield |
5.1 km | 9% | 0% |
| Burton | 5.3 km | 43% | 9% |
| Outer Harbor City of Port Adelaide Enfield |
5.6 km | 7% | 0% |
| Globe Derby Park | 6.0 km | 54% | 0% |
| Paralowie | 6.4 km | 29% | 0% |
| Direk | 6.5 km | 24% | 28% |
| North Haven City of Port Adelaide Enfield |
6.6 km | 12% | 0% |
| Salisbury North | 7.3 km | 38% | 0% |