Blackwood flood map & planning overlays
A planning-constraint profile of Blackwood
(City of Mitcham, SA) - 4.18 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
4.18 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Blackwood'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 Blackwood
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.
Blackwood at a glance
How Blackwood is zoned
Selling in Blackwood? 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 4.18 km², Blackwood is highly constrained by planning overlays. About 6% of the suburb sits within a mapped flood overlay, and 100% is flagged bushfire-prone. There are 21 heritage-listed sites on record, and the dominant land-use zone is Hills Neighbourhood. The median lot measures about 956 m² across 2,244 parcels.
Who lives in Blackwood
Census 2021 figures published by the ABS for the Blackwood 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 1055, and decile 10 within South Australia. The national average is 1000.
Age profile
Share of Blackwood's 4,266 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Blackwood, the wider ABS statistical area containing Blackwood. There is no annual population series published at suburb level, so this describes the surrounding area rather than Blackwood itself.
10,314 in 2001 to 13,858 in 2025, up 34%.
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.
Blackwood 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 Blackwood 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 28% of Blackwood. 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 Blackwood lot.
See what's in the $9 report →Blackwood planning - frequently asked
Is Blackwood flood-prone?
About 6% of Blackwood falls within a mapped flood overlay, against the council-wide suburb average of 12%.
Is Blackwood bushfire-prone?
Around 100% of Blackwood is mapped as bushfire-prone, compared with a City of Mitcham average of 53%.
Is Blackwood under a flight path?
Aircraft were observed below 3,000 ft over about 28% of Blackwood, and over about 70% 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 1,500 ft, with an average of 4,000 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 Blackwood?
The dominant planning zone in Blackwood is Hills Neighbourhood, though the suburb also includes Hills Face and Suburban Neighbourhood.
Does Blackwood have heritage-listed places?
Blackwood has 21 heritage-listed places on record.
What is the typical lot size in Blackwood?
Across 2,244 surveyed parcels in Blackwood, the median lot size is about 956 m².
Does Blackwood have a train station?
There is no train station inside Blackwood itself. The suburb is served by 27 bus stops.
What is the population of Blackwood?
At the 2021 Census Blackwood had 4,266 usual residents, with a median age of 45 and an average household size of 2.4 people. The wider Blackwood statistical area, which contains Blackwood, went from 10,314 people in 2001 to 13,858 in 2025, up 34%.
Is Blackwood an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Blackwood scores 1055 and sits in decile 9 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 Blackwood?
Median household income in Blackwood was $1,715 a week at the 2021 Census, against $2,139 for the typical suburb in City of Mitcham. Median rent was $330 a week and the median mortgage repayment $1,733 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Eden Hills | 1.7 km | 6% | 100% |
| Glenalta | 1.7 km | 8% | 100% |
| Hawthorndene | 2.2 km | 3% | 100% |
| Craigburn Farm | 2.4 km | 3% | 100% |
| Panorama | 2.7 km | 16% | 60% |
| Lynton | 2.8 km | 17% | 100% |
| Coromandel Valley City of Onkaparinga |
2.9 km | 4% | 100% |
| Bellevue Heights | 2.9 km | 5% | 100% |
| Pasadena | 3.1 km | 14% | 39% |
| Clapham | 3.5 km | 28% | 12% |