St Kilda flood map & planning overlays
St Kilda runs 60 tram stops, 3rd in Victoria.
A planning-constraint profile of St Kilda
(Port Phillip, VIC) - 3.16 km², mapped from live council and
state overlay data. This suburb is moderately constrained.
Profile updated 24 October 2026.
Free map preview, then PDF reports from $9 - about the price of an iced latte on a public holiday.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
3.16 km² - this suburb is moderately 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 24 Oct 2026
typical observed square 2 a day
Night movements: observed, lowest 500 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 zoning and planning overlays on this page are the controls a Section 32 vendor statement discloses.
Across its 3.16 km², St Kilda is moderately constrained by planning overlays. About 15% of the suburb sits within a mapped flood overlay. There are 220 heritage-listed sites on record, and the dominant land-use zone is General Residential Zone (GRZ1). The median lot measures about 997 m² across 18,843 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 1083, and decile 10 within Victoria. The national average is 1000.
Age profile
Share of St Kilda's 19,490 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of St Kilda - West, 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.
11,250 in 2001 to 16,298 in 2025, up 45%.
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 | Vicmap Planning and Victorian Government spatial services |
| Bushfire-prone mapping | Mapped | Vicmap Planning and Victorian Government spatial services |
| Zoning | Mapped | Vicmap Planning and Victorian Government spatial services |
| Heritage and environment | Mapped where published | Vicmap Planning and Victorian Government spatial services |
| Aircraft noise contours (ANEF) | Not held | Vicmap Planning and Victorian Government spatial services, 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 24 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.
See what's in the $9 report →Aircraft have been seen below 3,000 ft over about 100% 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 the indicative soil reactivity range to expect for a St Kilda lot.
St Kilda planning - frequently asked
Is St Kilda flood-prone?
About 15% of St Kilda falls within a mapped flood overlay, against the council-wide suburb average of 22%.
Is St Kilda bushfire-prone?
Bushfire mapping covers St Kilda and little to none of it is mapped as bushfire-prone.
Is St Kilda under a flight path?
Aircraft were observed below 3,000 ft over about 100% of St Kilda, in the period sampled (4 Sep 2026 to 24 Oct 2026). The lowest measured aircraft was at 500 ft, with an average of 1,500 ft. At the busiest point in the suburb about 10 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 General Residential Zone (GRZ1), though the suburb also includes Public Park and Recreation Zone (PPRZ) and Transport Zone (TRZ2).
Does St Kilda have heritage-listed places?
St Kilda has 220 heritage-listed places on record.
What is the typical lot size in St Kilda?
Across 18,843 surveyed parcels in St Kilda, the median lot size is about 997 m². There are also 874 registered easements mapped in the suburb.
Does St Kilda have a train station?
There is no train station inside St Kilda itself. The suburb is served by 35 bus stops and 60 tram stops.
What is the population of St Kilda?
At the 2021 Census St Kilda had 19,490 usual residents, with a median age of 36 and an average household size of 1.7 people. The wider St Kilda - West statistical area, which contains St Kilda, went from 11,250 people in 2001 to 16,298 in 2025, up 45%.
Is St Kilda an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), St Kilda scores 1083 and sits in decile 10 of 10 nationally and decile 10 within Victoria (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 $1,779 a week at the 2021 Census, against $2,096 for the typical suburb in Port Phillip. Median rent was $381 a week and the median mortgage repayment $2,000 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| St Kilda West | 1.1 km | 24% | 0% |
| Balaclava | 1.4 km | 49% | 0% |
| Windsor Stonnington |
1.5 km | 13% | 0% |
| Elwood | 1.9 km | 44% | 0% |
| Ripponlea | 2.0 km | 16% | 0% |
| St Kilda East Glen Eira |
2.1 km | 19% | 0% |
| Middle Park | 2.3 km | 15% | 0% |
| Prahran Stonnington |
2.5 km | 13% | 0% |
| South Yarra Stonnington |
3.1 km | 14% | 0% |
| Albert Park | 3.3 km | 8% | 0% |