South Windsor flood map & planning overlays
A planning-constraint profile of South Windsor
(Hawkesbury, NSW) - 8.92 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
8.92 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to South Windsor's boundary, with the flood, bushfire and environmental overlays drawn on top. Amber hatching is the published aircraft noise (ANEF) contour. 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 South Windsor
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.
Inside an aircraft noise contour
4% of the suburb's land sits inside a published ANEF or airport-environs contour. Contours vary street by street, so whether a particular lot is inside one needs a property-level check.
Highest contour present
Under AS 2021, land between ANEF 25 and 30 is generally unacceptable for new houses; 20 to 25 is conditionally acceptable with noise attenuation. The contour is a forecast, not a measurement at any one house.
Contours held
- Defence Airfields ANEF
Observed overflight - sampled 4 Sep to 2 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.
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.
South Windsor at a glance
How South Windsor is zoned
Buying in South Windsor? 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 8.92 km², South Windsor is highly constrained by planning overlays. About 80% of the suburb sits within a mapped flood overlay, and 54% is flagged bushfire-prone. There are 19 heritage-listed sites on record, and the dominant land-use zone is Primary Production. The median lot measures about 610 m² across 2,394 parcels.
Who lives in South Windsor
Census 2021 figures published by the ABS for the South Windsor 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 911, and decile 2 within New South Wales. The national average is 1000.
Age profile
Share of South Windsor's 5,948 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Windsor - Bligh Park, the wider ABS statistical area containing South Windsor. There is no annual population series published at suburb level, so this describes the surrounding area rather than South Windsor itself.
16,105 in 2001 to 15,477 in 2025, down 4%.
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.
South Windsor 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) | Inside a held contour | 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 South Windsor 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 89% of South Windsor. 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 South Windsor. 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 South Windsor lot.
See what's in the $9 report →South Windsor planning - frequently asked
Is South Windsor flood-prone?
About 80% of South Windsor falls within a mapped flood overlay, against the council-wide suburb average of 24%. Published flood models are held over parts of South Windsor; the free check on the Flood Model Report page says whether one reaches a given address.
Is South Windsor bushfire-prone?
Around 54% of South Windsor is mapped as bushfire-prone, compared with a Hawkesbury average of 84%.
Is South Windsor affected by aircraft noise?
About 4% of South Windsor sits inside a published aircraft noise contour, and the highest contour present is ANEF 25 - under AS 2021, land above ANEF 25 is generally considered unacceptable for new houses, and 20-25 conditionally acceptable with noise attenuation. ANEF contours are forecasts published per airport and used to control noise-sensitive development; they are not a measurement at any one house, and a property can sit under a flight path and outside every contour.
Is South Windsor under a flight path?
Aircraft were observed below 3,000 ft over about 89% of South Windsor, and over about 93% 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 1,500 ft. At the busiest point in the suburb about 20 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 South Windsor?
The dominant planning zone in South Windsor is Primary Production, though the suburb also includes Low Density Residential and General Industrial.
Does South Windsor have heritage-listed places?
South Windsor has 19 heritage-listed places on record.
What is the typical lot size in South Windsor?
Across 2,394 surveyed parcels in South Windsor, the median lot size is about 610 m². There are also 6 registered easements mapped in the suburb.
Does South Windsor have a train station?
There is no train station inside South Windsor itself. The suburb is served by 98 bus stops.
What is the population of South Windsor?
At the 2021 Census South Windsor had 5,948 usual residents, with a median age of 34 and an average household size of 2.5 people. The wider Windsor - Bligh Park statistical area, which contains South Windsor, went from 16,105 people in 2001 to 15,477 in 2025, down 4%.
Is South Windsor an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), South Windsor scores 911 and sits in decile 2 of 10 nationally and decile 2 within New South Wales (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in South Windsor?
Median household income in South Windsor was $1,466 a week at the 2021 Census, against $2,160 for the typical suburb in Hawkesbury. Median rent was $360 a week and the median mortgage repayment $2,000 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Bligh Park | 1.1 km | 36% | 24% |
| Windsor | 2.3 km | 90% | 18% |
| Mulgrave | 2.4 km | 91% | 54% |
| Clarendon | 2.6 km | 100% | 29% |
| Windsor Downs | 3.2 km | 44% | 77% |
| Richmond | 3.9 km | 56% | 64% |
| Mcgraths Hill | 4.0 km | 100% | 59% |
| Vineyard | 4.7 km | 72% | 88% |
| Cornwallis | 4.8 km | 100% | 22% |
| Berkshire Park Penrith |
4.8 km | 7% | 97% |