Marion flood map & planning overlays
A planning-constraint profile of Marion
(City of Marion, SA) - 2.0 km², mapped from live council and
state overlay data. This suburb is moderately constrained.
Profile updated 26 September 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
2.0 km² - this suburb is moderately constrained by planning overlays.
Elevation hillshade with street names, clipped to Marion'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 Marion
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 26 Sep 2026
typical observed square 1 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.
Marion at a glance
How Marion is zoned
Selling in Marion? 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 2.0 km², Marion is moderately constrained by planning overlays. About 16% of the suburb sits within a mapped flood overlay. There are 22 heritage-listed sites on record, and the dominant land-use zone is General Neighbourhood. The median lot measures about 588 m² across 1,898 parcels.
Who lives in Marion
Census 2021 figures published by the ABS for the Marion 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 Marion's 4,101 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Mitchell Park, the wider ABS statistical area containing Marion. There is no annual population series published at suburb level, so this describes the surrounding area rather than Marion 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.
Marion 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 26 September 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 Marion 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 27% of Marion. 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 Marion lot.
See what's in the $9 report →Marion planning - frequently asked
Is Marion flood-prone?
About 16% of Marion falls within a mapped flood overlay, against the council-wide suburb average of 14%.
Is Marion bushfire-prone?
Bushfire mapping covers Marion and little to none of it is mapped as bushfire-prone (the City of Marion average is 9%).
Is Marion under a flight path?
Aircraft were observed below 3,000 ft over about 27% of Marion, and over about 87% at any altitude up to 10,000 ft, in the period sampled (4 Sep 2026 to 26 Sep 2026). The lowest measured aircraft was at 500 ft, with an average of 4,000 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 Marion?
The dominant planning zone in Marion is General Neighbourhood, though the suburb also includes Established Neighbourhood and Open Space.
Does Marion have heritage-listed places?
Marion has 22 heritage-listed places on record.
What is the typical lot size in Marion?
Across 1,898 surveyed parcels in Marion, the median lot size is about 588 m².
Does Marion have a train station?
There is no train station inside Marion itself. The suburb is served by 20 bus stops.
What is the population of Marion?
At the 2021 Census Marion had 4,101 usual residents, with a median age of 43 and an average household size of 2.3 people. The wider Mitchell Park statistical area, which contains Marion, went from 13,200 people in 2001 to 18,165 in 2025, up 38%.
Is Marion an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Marion 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 Marion?
Median household income in Marion was $1,366 a week at the 2021 Census, against $1,579 for the typical suburb in City of Marion. Median rent was $355 a week and the median mortgage repayment $1,712 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Oaklands Park | 0.8 km | 37% | 0% |
| Mitchell Park | 0.8 km | 2% | 4% |
| Warradale | 1.6 km | 58% | 0% |
| Tonsley | 1.7 km | 0% | 56% |
| Clovelly Park | 1.8 km | 0% | 0% |
| Sturt | 1.8 km | 32% | 38% |
| Seacombe Gardens | 1.9 km | 50% | 0% |
| Park Holme | 1.9 km | 0% | 0% |
| Ascot Park | 2.1 km | 0% | 0% |
| Bedford Park City of Mitcham |
2.2 km | 11% | 98% |