Willalo flood map & planning overlays
A planning-constraint profile of Willalo
(The Regional Council of Goyder, SA) - 98.17 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
98.17 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Willalo's boundary, with the flood, bushfire and environmental overlays drawn on top.
Nearby suburbs, nearest first
Aircraft noise and flight paths over Willalo
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
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.
Willalo at a glance
How Willalo is zoned
Selling in Willalo? 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 98.17 km², Willalo is highly constrained by planning overlays. Flood mapping covers the suburb and none of it falls within a mapped flood overlay, and 100% is flagged bushfire-prone. The dominant land-use zone is Rural. The median lot measures about 586,144 m² across 132 parcels.
Who lives in Willalo
Census 2021 figures published by the ABS for the Willalo 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 995, and decile 6 within South Australia. The national average is 1000.
Age profile
Share of Willalo's 59 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Goyder, the wider ABS statistical area containing Willalo. There is no annual population series published at suburb level, so this describes the surrounding area rather than Willalo itself.
4,265 in 2001 to 4,152 in 2025, down 3%.
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.
Willalo 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 Willalo 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.
Building or pricing a slab? The $119 geotechnical desktop report covers geology, soils, bores and an indicative AS 2870 site class for a Willalo lot.
See what's in the $9 report →Willalo planning - frequently asked
Is Willalo flood-prone?
Flood mapping covers Willalo and none of the suburb falls within a mapped flood overlay.
Is Willalo bushfire-prone?
Around 100% of Willalo is mapped as bushfire-prone, compared with a The Regional Council of Goyder average of 100%.
Is Willalo under a flight path?
No aircraft were observed over Willalo in the period sampled (4 Sep 2026 to 3 Oct 2026). Sampling is intermittent, so that is a floor rather than proof that none fly over. 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 Willalo?
The dominant planning zone in Willalo is Rural.
Does Willalo have heritage-listed places?
No heritage-listed places are on record within Willalo.
What is the typical lot size in Willalo?
Across 132 surveyed parcels in Willalo, the median lot size is about 586,144 m².
What is the population of Willalo?
At the 2021 Census Willalo had 59 usual residents, with a median age of 42 and an average household size of 2.7 people. The wider Goyder statistical area, which contains Willalo, went from 4,265 people in 2001 to 4,152 in 2025, down 3%.
Is Willalo an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Willalo scores 995 and sits in decile 6 of 10 nationally and decile 6 within South Australia (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Willalo?
Median household income in Willalo was $1,312 a week at the 2021 Census, against $1,021 for the typical suburb in The Regional Council of Goyder. Median rent was $90 a week.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Canowie | 6.5 km | 0% | 100% |
| North Booborowie | 9.8 km | 0% | 100% |
| Hacklins Corner Northern Areas Council |
9.9 km | 0% | 100% |
| Mayfield Northern Areas Council |
11.4 km | 0% | 100% |
| Hallett | 13.6 km | 0% | 100% |
| Booborowie | 15.0 km | 0% | 100% |
| Spalding Northern Areas Council |
16.0 km | 0% | 100% |
| Washpool Northern Areas Council |
18.1 km | 0% | 100% |
| Mount Bryan | 18.1 km | 0% | 100% |
| Belalie East Northern Areas Council |
18.4 km | 0% | 100% |