Boronia flood map & planning overlays
Boronia: 23,607 people, median 39, 2nd-youngest in Knox.
Free map preview, then PDF reports from $9 - about the price of an iced latte on a public holiday.
A planning-constraint profile of Boronia
(Knox, VIC) - 11.27 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 24 October 2026.
Constraint readout
11.27 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Boronia'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 Boronia
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 0 a day
Night movements: observed, lowest 2,000 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.
Boronia at a glance
How Boronia is zoned
Selling in Boronia? The zoning and planning overlays on this page are the controls a Section 32 vendor statement discloses.
Across its 11.27 km², Boronia is highly constrained by planning overlays. About 4% of the suburb sits within a mapped flood overlay, and 17% is flagged bushfire-prone. There are 8 heritage-listed sites on record, and the dominant land-use zone is Neighbourhood Residential Zone (NRZ1). The median lot measures about 627 m² across 13,294 parcels.
Who lives in Boronia
Census 2021 figures published by the ABS for the Boronia 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 992, and decile 5 within Victoria. The national average is 1000.
Age profile
Share of Boronia's 23,607 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Boronia, the wider ABS statistical area containing Boronia. There is no annual population series published at suburb level, so this describes the surrounding area rather than Boronia itself.
20,673 in 2001 to 24,763 in 2025, up 20%.
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.
Boronia 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 Boronia 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 68% of Boronia. 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 Boronia lot.
Boronia planning - frequently asked
Is Boronia flood-prone?
About 4% of Boronia falls within a mapped flood overlay, against the council-wide suburb average of 12%.
Is Boronia bushfire-prone?
Around 17% of Boronia is mapped as bushfire-prone, compared with a Knox average of 42%.
Is Boronia under a flight path?
Aircraft were observed below 3,000 ft over about 68% of Boronia, and over about 80% at any altitude up to 10,000 ft, in the period sampled (4 Sep 2026 to 24 Oct 2026). The lowest measured aircraft was at 1,000 ft, with an average of 3,000 ft. At the busiest point in the suburb about 0 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 Boronia?
The dominant planning zone in Boronia is Neighbourhood Residential Zone (NRZ1), though the suburb also includes Neighbourhood Residential Zone (NRZ4) and Neighbourhood Residential Zone (NRZ5).
Does Boronia have heritage-listed places?
Boronia has 8 heritage-listed places on record.
What is the typical lot size in Boronia?
Across 13,294 surveyed parcels in Boronia, the median lot size is about 627 m². There are also 4,913 registered easements mapped in the suburb.
Does Boronia have a train station?
Yes - Boronia has 1 train station: Boronia Station. It is also served by 115 bus stops.
What is the population of Boronia?
At the 2021 Census Boronia had 23,607 usual residents, with a median age of 39 and an average household size of 2.4 people. The wider Boronia statistical area, which contains Boronia, went from 20,673 people in 2001 to 24,763 in 2025, up 20%.
Is Boronia an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Boronia scores 992 and sits in decile 6 of 10 nationally and decile 5 within Victoria (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Boronia?
Median household income in Boronia was $1,619 a week at the 2021 Census, against $1,915 for the typical suburb in Knox. Median rent was $376 a week and the median mortgage repayment $1,870 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Bayswater | 2.2 km | 16% | 10% |
| The Basin | 2.6 km | 1% | 82% |
| Bayswater North Maroondah |
3.2 km | <1% | 10% |
| Kilsyth South Maroondah |
3.3 km | Not mapped | 50% |
| Tremont Yarra Ranges |
3.5 km | <1% | 100% |
| Ferntree Gully | 3.7 km | 6% | 24% |
| Kilsyth Yarra Ranges |
4.2 km | 6% | 32% |
| Croydon South Maroondah |
4.3 km | Not mapped | 0% |
| Ferny Creek Yarra Ranges |
4.5 km | Not mapped | 100% |
| Heathmont Maroondah |
4.7 km | 7% | 5% |