Blackburn flood map & planning overlays
The VIC Blackburn leads Whitehorse for significant landscape overlay, 40.3%, with 14,478 residents.
Free map preview, then PDF reports from $9 - about the price of an iced latte on a public holiday.
A planning-constraint profile of Blackburn
(Whitehorse, VIC) - 5.9 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 24 October 2026.
Constraint readout
5.9 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Blackburn'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 Blackburn
The ANEF contour is a published planning forecast and observed overflight is what a sampled tracking feed recorded - neither describes any individual property.
Observed overflight - sampled 4 Sep to 24 Oct 2026
typical observed square 1 a day
Night movements: observed, lowest 1,000 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.
How this is measured
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.
Blackburn at a glance
How Blackburn is zoned
Selling in Blackburn? The zoning and planning overlays on this page are the controls a Section 32 vendor statement discloses.
Across its 5.9 km², Blackburn is highly constrained by planning overlays. About 7% of the suburb sits within a mapped flood overlay, and 7% is flagged bushfire-prone. There are 43 heritage-listed sites on record, and the dominant land-use zone is Neighbourhood Residential Zone (NRZ1). The median lot measures about 640 m² across 9,420 parcels.
Who lives in Blackburn
Census 2021 figures published by the ABS for the Blackburn 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 1095, and decile 10 within Victoria. The national average is 1000.
Age profile
Share of Blackburn's 14,478 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Blackburn, the wider ABS statistical area containing Blackburn. There is no annual population series published at suburb level, so this describes the surrounding area rather than Blackburn itself.
19,123 in 2001 to 23,732 in 2025, up 24%.
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.
Blackburn 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 | Vicmap Planning and Victorian Government spatial services |
| Bushfire-prone mapping | Mapped | Vicmap Planning and Victorian Government spatial services |
| Zoning | Mapped | Vicmap Planning and Victorian Government spatial services |
| Heritage and environment | Mapped where published | Vicmap Planning and Victorian Government spatial services |
| Aircraft noise contours (ANEF) | Not held | Vicmap Planning and Victorian Government spatial services, 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 24 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 Blackburn 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.
See what's in the $9 report →Aircraft have been seen below 3,000 ft over about 95% of Blackburn. 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 the indicative soil reactivity range to expect for a Blackburn lot.
Blackburn planning - frequently asked
Is Blackburn flood-prone?
About 7% of Blackburn falls within a mapped flood overlay, against the council-wide suburb average of 4%.
Is Blackburn bushfire-prone?
Around 7% of Blackburn is mapped as bushfire-prone, compared with a Whitehorse average of 3%.
Is Blackburn under a flight path?
Aircraft were observed below 3,000 ft over about 95% of Blackburn, in the period sampled (4 Sep 2026 to 24 Oct 2026). The lowest measured aircraft was at 500 ft, with an average of 3,000 ft. At the busiest point in the suburb about 4 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 Blackburn?
The dominant planning zone in Blackburn is Neighbourhood Residential Zone (NRZ1), though the suburb also includes General Residential Zone (GRZ1) and Neighbourhood Residential Zone (NRZ3).
Does Blackburn have heritage-listed places?
Blackburn has 43 heritage-listed places on record.
What is the typical lot size in Blackburn?
Across 9,420 surveyed parcels in Blackburn, the median lot size is about 640 m². There are also 2,492 registered easements mapped in the suburb.
Does Blackburn have a train station?
Yes - Blackburn has 2 train stations: Blackburn Station, Laburnum Station. It is also served by 80 bus stops.
What is the population of Blackburn?
At the 2021 Census Blackburn had 14,478 usual residents, with a median age of 41 and an average household size of 2.5 people. The wider Blackburn statistical area, which contains Blackburn, went from 19,123 people in 2001 to 23,732 in 2025, up 24%.
Is Blackburn an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Blackburn scores 1095 and sits in decile 10 of 10 nationally and decile 10 within Victoria (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Blackburn?
Median household income in Blackburn was $2,065 a week at the 2021 Census, against $1,941 for the typical suburb in Whitehorse. Median rent was $411 a week and the median mortgage repayment $2,208 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Blackburn North | 1.9 km | Not mapped | 0% |
| Blackburn South | 2.1 km | 3% | 0% |
| Box Hill | 2.2 km | 2% | 0% |
| Nunawading | 2.3 km | 1% | <1% |
| Box Hill North | 2.6 km | 3% | 0% |
| Forest Hill | 2.9 km | 2% | 0% |
| Box Hill South | 2.9 km | 8% | <1% |
| Burwood East | 3.6 km | 1% | 0% |
| Mont Albert | 3.8 km | <1% | 0% |
| Mont Albert North | 4.1 km | 10% | 0% |