Tonsley flood map & planning overlays
A planning-constraint profile of Tonsley
(City of Marion, SA) - 0.98 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
0.98 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Tonsley'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 Tonsley
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 1 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.
Tonsley at a glance
How Tonsley is zoned
Selling in Tonsley? 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 0.98 km², Tonsley is highly constrained by planning overlays. Flood mapping covers the suburb and none of it falls within a mapped flood overlay, and 56% is flagged bushfire-prone. There is 1 heritage-listed site on record, and the dominant land-use zone is Strategic Innovation. The median lot measures about 94 m² across 1,449 parcels.
Who lives in Tonsley
Census 2021 figures published by the ABS for the Tonsley 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 965, and decile 4 within South Australia. The national average is 1000.
Age profile
Share of Tonsley's 743 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Mitchell Park, the wider ABS statistical area containing Tonsley. There is no annual population series published at suburb level, so this describes the surrounding area rather than Tonsley itself.
13,200 in 2001 to 18,165 in 2025, up 38%.
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.
Tonsley 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 Tonsley 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 85% of Tonsley. 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 Tonsley lot.
See what's in the $9 report →Tonsley planning - frequently asked
Is Tonsley flood-prone?
Flood mapping covers Tonsley and none of the suburb falls within a mapped flood overlay (the council-wide suburb average is 14%).
Is Tonsley bushfire-prone?
Around 56% of Tonsley is mapped as bushfire-prone, compared with a City of Marion average of 9%.
Is Tonsley under a flight path?
Aircraft were observed below 3,000 ft over about 85% of Tonsley, and over about 100% 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 2,000 ft. At the busiest point in the suburb about 1 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 Tonsley?
The dominant planning zone in Tonsley is Strategic Innovation, though the suburb also includes Urban Neighbourhood and Housing Diversity Neighbourhood.
Does Tonsley have heritage-listed places?
Tonsley has 1 heritage-listed place on record.
What is the typical lot size in Tonsley?
Across 1,449 surveyed parcels in Tonsley, the median lot size is about 94 m².
Does Tonsley have a train station?
There is no train station inside Tonsley itself. The suburb is served by 4 bus stops.
What is the population of Tonsley?
At the 2021 Census Tonsley had 743 usual residents, with a median age of 31 and an average household size of 2.0 people. The wider Mitchell Park statistical area, which contains Tonsley, went from 13,200 people in 2001 to 18,165 in 2025, up 38%.
Is Tonsley an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Tonsley scores 965 and sits in decile 4 of 10 nationally and decile 4 within South Australia (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Tonsley?
Median household income in Tonsley was $1,470 a week at the 2021 Census, against $1,579 for the typical suburb in City of Marion. Median rent was $330 a week and the median mortgage repayment $1,500 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Mitchell Park | 1.0 km | 2% | 4% |
| St Marys City of Mitcham |
1.0 km | 29% | 41% |
| Clovelly Park | 1.2 km | 0% | 0% |
| Bedford Park City of Mitcham |
1.4 km | 11% | 98% |
| Marion | 1.7 km | 16% | 0% |
| Pasadena City of Mitcham |
1.7 km | 14% | 39% |
| Sturt | 2.1 km | 32% | 38% |
| Bellevue Heights City of Mitcham |
2.3 km | 5% | 100% |
| Panorama City of Mitcham |
2.5 km | 16% | 60% |
| Oaklands Park | 2.5 km | 37% | 0% |