Blacktown flood map & planning overlays
A planning-constraint profile of Blacktown
(Blacktown, NSW) - 15.91 km², mapped from live council and
state overlay data. This suburb is moderately constrained.
Profile updated 3 October 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
15.91 km² - this suburb is moderately constrained by planning overlays.
Elevation hillshade with street names, clipped to Blacktown'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 Blacktown
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 2 Oct 2026
typical observed square 1 a day
Night movements: observed, lowest 500 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.
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.
Blacktown at a glance
How Blacktown is zoned
Buying in Blacktown? The zoning, flood and bushfire lines on the section 10.7 certificate attached to the contract are mapped controls - see our s10.7 certificate guide.
Across its 15.91 km², Blacktown is moderately constrained by planning overlays. About 10% of the suburb sits within a mapped flood overlay, and 3% is flagged bushfire-prone. There are 21 heritage-listed sites on record, and the dominant land-use zone is Low Density Residential. The median lot measures about 574 m² across 13,355 parcels.
Who lives in Blacktown
Census 2021 figures published by the ABS for the Blacktown 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 965, and decile 4 within New South Wales. The national average is 1000.
Age profile
Share of Blacktown's 50,961 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Blacktown (East) - Kings Park, the wider ABS statistical area containing Blacktown. There is no annual population series published at suburb level, so this describes the surrounding area rather than Blacktown itself.
13,035 in 2001 to 18,408 in 2025, up 41%.
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.
Blacktown 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 | NSW Government spatial services, NSW ePlanning and published council flood studies |
| Bushfire-prone mapping | Mapped | NSW Government spatial services, NSW ePlanning and published council flood studies |
| Zoning | Mapped | NSW Government spatial services, NSW ePlanning and published council flood studies |
| Heritage and environment | Mapped where published | NSW Government spatial services, NSW ePlanning and published council flood studies |
| Aircraft noise contours (ANEF) | Not held | NSW Government spatial services, NSW ePlanning and published council flood studies, 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 Blacktown 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 85% of Blacktown. The report's Aircraft Overflight page narrows that to the address itself: how many aircraft a day, how low, and at what heights.
Published flood models are held over parts of Blacktown. The free check tells you whether one reaches an address; where it does, a Flood Model Report is +$9 with the planning report.
Building or pricing a slab? The $119 geotechnical desktop report covers geology, soils, bores and an indicative AS 2870 site class for a Blacktown lot.
See what's in the $9 report →Blacktown planning - frequently asked
Is Blacktown flood-prone?
About 10% of Blacktown falls within a mapped flood overlay, against the council-wide suburb average of 16%. Published flood models are held over parts of Blacktown; the free check on the Flood Model Report page says whether one reaches a given address.
Is Blacktown bushfire-prone?
Around 3% of Blacktown is mapped as bushfire-prone, compared with a Blacktown average of 21%.
Is Blacktown under a flight path?
Aircraft were observed below 3,000 ft over about 85% of Blacktown, and over about 92% at any altitude up to 10,000 ft, in the period sampled (4 Sep 2026 to 2 Oct 2026). The lowest measured aircraft was at 500 ft, with an average of 2,000 ft. At the busiest point in the suburb about 6 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 Blacktown?
The dominant planning zone in Blacktown is Low Density Residential, though the suburb also includes Infrastructure and Productivity Support.
Does Blacktown have heritage-listed places?
Blacktown has 21 heritage-listed places on record.
What is the typical lot size in Blacktown?
Across 13,355 surveyed parcels in Blacktown, the median lot size is about 574 m². There are also 20 registered easements mapped in the suburb.
Does Blacktown have a train station?
Yes - Blacktown has 1 train station: Blacktown Station. It is also served by 517 bus stops.
What is the population of Blacktown?
At the 2021 Census Blacktown had 50,961 usual residents, with a median age of 34 and an average household size of 2.9 people. The wider Blacktown (East) - Kings Park statistical area, which contains Blacktown, went from 13,035 people in 2001 to 18,408 in 2025, up 41%.
Is Blacktown an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Blacktown scores 965 and sits in decile 4 of 10 nationally and decile 4 within New South Wales (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Blacktown?
Median household income in Blacktown was $1,774 a week at the 2021 Census, against $2,117 for the typical suburb in Blacktown. Median rent was $400 a week and the median mortgage repayment $2,094 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Arndell Park | 2.5 km | 14% | 2% |
| Huntingwood | 3.0 km | 7% | 15% |
| Woodcroft | 3.0 km | 11% | 16% |
| Seven Hills | 3.1 km | 10% | 0% |
| Marayong | 3.1 km | 20% | 0% |
| Lalor Park | 3.2 km | 8% | 0% |
| Bungarribee | 3.4 km | 56% | 72% |
| Kings Park | 3.6 km | 12% | 0% |
| Doonside | 3.8 km | 23% | 24% |
| Prospect | 4.1 km | 1% | 50% |