Willaston flood map & planning overlays
A planning-constraint profile of Willaston
(Town of Gawler, SA) - 3.04 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
3.04 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Willaston'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 Willaston
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 2 a day
Night movements: not established - night is sampled as often as day, but too few night flights have been seen here to conclude either way.
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.
Willaston at a glance
How Willaston is zoned
Selling in Willaston? 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 3.04 km², Willaston is highly constrained by planning overlays. About 36% of the suburb sits within a mapped flood overlay, and 75% is flagged bushfire-prone. There are 33 heritage-listed sites on record, and the dominant land-use zone is General Neighbourhood. The median lot measures about 660 m² across 1,961 parcels.
Who lives in Willaston
Census 2021 figures published by the ABS for the Willaston 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 915, and decile 2 within South Australia. The national average is 1000.
Age profile
Share of Willaston's 3,458 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Gawler - North, the wider ABS statistical area containing Willaston. There is no annual population series published at suburb level, so this describes the surrounding area rather than Willaston itself.
6,079 in 2001 to 10,364 in 2025, up 70%.
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.
Willaston 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 Willaston 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 94% of Willaston. 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 Willaston lot.
See what's in the $9 report →Willaston planning - frequently asked
Is Willaston flood-prone?
About 36% of Willaston falls within a mapped flood overlay, against the council-wide suburb average of 38%.
Is Willaston bushfire-prone?
Around 75% of Willaston is mapped as bushfire-prone, compared with a Town of Gawler average of 73%.
Is Willaston under a flight path?
Aircraft were observed below 3,000 ft over about 94% of Willaston, 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 6 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 Willaston?
The dominant planning zone in Willaston is General Neighbourhood, though the suburb also includes Open Space and Community Facilities.
Does Willaston have heritage-listed places?
Willaston has 33 heritage-listed places on record.
What is the typical lot size in Willaston?
Across 1,961 surveyed parcels in Willaston, the median lot size is about 660 m². There are also 96 registered easements mapped in the suburb.
Does Willaston have a train station?
There is no train station inside Willaston itself. The suburb is served by 19 bus stops.
What is the population of Willaston?
At the 2021 Census Willaston had 3,458 usual residents, with a median age of 42 and an average household size of 2.3 people. The wider Gawler - North statistical area, which contains Willaston, went from 6,079 people in 2001 to 10,364 in 2025, up 70%.
Is Willaston an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Willaston scores 915 and sits in decile 2 of 10 nationally and decile 2 within South Australia (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Willaston?
Median household income in Willaston was $1,254 a week at the 2021 Census, against $1,374 for the typical suburb in Town of Gawler. Median rent was $300 a week and the median mortgage repayment $1,213 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Hewett Light Regional Council |
1.2 km | 28% | 100% |
| Gawler | 1.5 km | 50% | 8% |
| Gawler Belt Light Regional Council |
1.8 km | 28% | 98% |
| Reid | 2.2 km | 59% | 92% |
| Gawler West | 2.2 km | 79% | 44% |
| Gawler South | 2.8 km | 22% | 70% |
| Gawler East | 2.8 km | 11% | 83% |
| Evanston | 3.8 km | 32% | 45% |
| Buchfelde Light Regional Council |
3.9 km | 22% | 100% |
| Concordia The Barossa Council |
4.8 km | 2% | 100% |