Willyaroo flood map & planning overlays
A planning-constraint profile of Willyaroo
(Alexandrina Council, SA) - 3.93 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
3.93 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Willyaroo'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 Willyaroo
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.
Willyaroo at a glance
How Willyaroo is zoned
Selling in Willyaroo? 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 3.93 km², Willyaroo 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 5,662 m² across 158 parcels.
Who lives in Willyaroo
Census 2021 figures published by the ABS for the Willyaroo 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 980, and decile 5 within South Australia. The national average is 1000.
Age profile
Share of Willyaroo's 376 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Strathalbyn, the wider ABS statistical area containing Willyaroo. There is no annual population series published at suburb level, so this describes the surrounding area rather than Willyaroo itself.
4,842 in 2001 to 8,670 in 2025, up 79%.
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.
Willyaroo 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 Willyaroo 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.
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 Willyaroo lot.
See what's in the $9 report →Willyaroo planning - frequently asked
Is Willyaroo flood-prone?
Flood mapping covers Willyaroo and none of the suburb falls within a mapped flood overlay (the council-wide suburb average is 16%).
Is Willyaroo bushfire-prone?
Around 100% of Willyaroo is mapped as bushfire-prone, compared with a Alexandrina Council average of 100%.
Is Willyaroo under a flight path?
Aircraft were observed over about 27% of Willyaroo in the period sampled, but only above 3,000 ft - the lowest measured was 3,000 ft. 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 Willyaroo?
The dominant planning zone in Willyaroo is Rural, though the suburb also includes Rural Living and Rural Horticulture.
Does Willyaroo have heritage-listed places?
No heritage-listed places are on record within Willyaroo.
What is the typical lot size in Willyaroo?
Across 158 surveyed parcels in Willyaroo, the median lot size is about 5,662 m².
Does Willyaroo have a train station?
There is no train station inside Willyaroo itself. The suburb is served by 1 bus stop.
What is the population of Willyaroo?
At the 2021 Census Willyaroo had 376 usual residents, with a median age of 47 and an average household size of 2.9 people. The wider Strathalbyn statistical area, which contains Willyaroo, went from 4,842 people in 2001 to 8,670 in 2025, up 79%.
Is Willyaroo an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Willyaroo scores 980 and sits in decile 5 of 10 nationally and decile 5 within South Australia (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Willyaroo?
Median household income in Willyaroo was $1,390 a week at the 2021 Census, against $1,655 for the typical suburb in Alexandrina Council. Median rent was $375 a week and the median mortgage repayment $1,509 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Belvidere | 3.2 km | 0% | 100% |
| Strathalbyn | 5.9 km | 0% | 99% |
| Bletchley | 6.5 km | 4% | 100% |
| Angas Plains | 7.3 km | 29% | 100% |
| Sandergrove | 8.0 km | 0% | 100% |
| Nurragi | 8.5 km | 0% | 100% |
| Woodchester | 9.2 km | 0% | 100% |
| Gemmells | 11.9 km | 0% | 100% |
| Highland Valley | 12.0 km | 0% | 100% |
| Paris Creek | 12.5 km | 0% | 100% |