Mount Osmond flood map & planning overlays
A planning-constraint profile of Mount Osmond
(City of Burnside, SA) - 2.11 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
2.11 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Mount Osmond'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 Mount Osmond
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 5 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.
Mount Osmond at a glance
How Mount Osmond is zoned
Selling in Mount Osmond? 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 2.11 km², Mount Osmond 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. There are 7 heritage-listed sites on record, and the dominant land-use zone is Hills Face. The median lot measures about 2,279 m² across 205 parcels.
Who lives in Mount Osmond
Census 2021 figures published by the ABS for the Mount Osmond 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 1141, and decile 10 within South Australia. The national average is 1000.
Age profile
Share of Mount Osmond's 464 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Beaumont - Glen Osmond, the wider ABS statistical area containing Mount Osmond. There is no annual population series published at suburb level, so this describes the surrounding area rather than Mount Osmond itself.
9,021 in 2001 to 10,664 in 2025, up 18%.
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.
Mount Osmond 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 Mount Osmond 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 23% of Mount Osmond. 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 Mount Osmond lot.
See what's in the $9 report →Mount Osmond planning - frequently asked
Is Mount Osmond flood-prone?
Flood mapping covers Mount Osmond and none of the suburb falls within a mapped flood overlay (the council-wide suburb average is 4%).
Is Mount Osmond bushfire-prone?
Around 100% of Mount Osmond is mapped as bushfire-prone, compared with a City of Burnside average of 30%.
Is Mount Osmond under a flight path?
Aircraft were observed below 3,000 ft over about 23% of Mount Osmond, and over about 83% 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 2,500 ft, with an average of 4,500 ft. At the busiest point in the suburb about 9 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 Mount Osmond?
The dominant planning zone in Mount Osmond is Hills Face, though the suburb also includes Suburban Neighbourhood and Hills Neighbourhood.
Does Mount Osmond have heritage-listed places?
Mount Osmond has 7 heritage-listed places on record.
What is the typical lot size in Mount Osmond?
Across 205 surveyed parcels in Mount Osmond, the median lot size is about 2,279 m².
Does Mount Osmond have a train station?
There is no train station inside Mount Osmond itself. The suburb is served by 1 bus stop.
What is the population of Mount Osmond?
At the 2021 Census Mount Osmond had 464 usual residents, with a median age of 46 and an average household size of 2.8 people. The wider Beaumont - Glen Osmond statistical area, which contains Mount Osmond, went from 9,021 people in 2001 to 10,664 in 2025, up 18%.
Is Mount Osmond an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Mount Osmond scores 1141 and sits in decile 10 of 10 nationally and decile 10 within South Australia (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Mount Osmond?
Median household income in Mount Osmond was $2,777 a week at the 2021 Census, against $2,292 for the typical suburb in City of Burnside. Median rent was $441 a week and the median mortgage repayment $2,599 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Glen Osmond | 1.0 km | 0% | 70% |
| Leawood Gardens City of Mitcham |
1.3 km | 0% | 100% |
| Waterfall Gully | 1.4 km | 0% | 100% |
| Beaumont | 1.6 km | 1% | 73% |
| St Georges | 1.7 km | 0% | 4% |
| Urrbrae City of Mitcham |
2.0 km | 0% | 56% |
| Myrtle Bank City of Unley |
2.4 km | 10% | 0% |
| Glenunga | 2.4 km | 0% | 0% |
| Brown Hill Creek City of Mitcham |
2.6 km | 0% | 100% |
| Linden Park | 2.6 km | 0% | 0% |