Winston Hills flood map & planning overlays

A planning-constraint profile of Winston Hills (City Of Parramatta, NSW) - 4.64 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.

Planning schematicWinston Hills

Constraint readout

4.64 km² - this suburb is moderately constrained by planning overlays.

Flood overlay 0%

below council avg (1%) · #2 of 8 mapped council suburbs

Modelled flood depth held over parts of Winston Hills

Bushfire-prone 9%

1.5× council avg (6%) · #6 of 25 mapped council suburbs

Environmental6%

≈ council avg (5%) · #7 of 25 in council

Heritage sites 21 Aircraft seen below 3,000 ft 85% Mostly Low Density Residential Bushfire 6th most affected of 25 →

Elevation hillshade with street names, clipped to Winston Hills'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 Winston Hills

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

Under observed aircraft

100%

of the suburb, at or below 10,000 ft

Below 3,000 ft

85%

of the suburb's area

Lowest measured

500 ft

averaging 4,000 ft

Busiest square

~30 a day

11 a day below 3,000 ft · ±17%
typical observed square 4 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.

Winston Hills at a glance

Parcels 4,052 Median lot 612 m² Mapped easements 9 Bus stops 162

How Winston Hills is zoned

Low Density Residential 78%

Public Recreation 8%

Environmental Conservation 6%

General Industrial 3%

Natural Waterways 2%

Local Centre 1%

Buying in Winston Hills? 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 4.64 km², Winston Hills is moderately constrained by planning overlays. Flood mapping covers the suburb and none of it falls within a mapped flood overlay, and 9% 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 612 m² across 4,052 parcels.

Who lives in Winston Hills

Census 2021 figures published by the ABS for the Winston Hills suburb boundary itself, not a wider region.

Population

12,123

usual residents, 2021

Median age

years

Median household income

$2,309

per week, City Of Parramatta suburb typical $1,993

Median rent

$530

per week, City Of Parramatta suburb typical $440

Median mortgage

$2,681

per month

Household size

2.9

people, average

Socio-economic standing

ABS SEIFA 2021 ranks every Australian suburb. Decile 1 is the most disadvantaged tenth of the country, decile 10 the least.

Advantage and disadvantage (IRSAD) Decile 10

most disadvantagedleast disadvantaged

Score 1095, and decile 10 within New South Wales. The national average is 1000.

Relative disadvantage (IRSD) Decile 9

most disadvantagedleast disadvantaged

Age profile

Share of Winston Hills's 12,123 residents in each ABS age band.

0-4 6.2%

5-14 14.9%

15-19 6.3%

20-24 4.5%

25-34 8.2%

35-44 15.4%

45-54 13.7%

55-64 10.4%

65-74 9.7%

75-84 7.8%

85+ 2.8%

Population trend, 2001 to 2025

Estimated resident population of Winston Hills, the wider ABS statistical area containing Winston Hills. There is no annual population series published at suburb level, so this describes the surrounding area rather than Winston Hills itself.

10,725 in 2001 to 11,218 in 2025, up 5%.

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.

Winston Hills 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 Winston Hills 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 Winston Hills. 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 Winston Hills. 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 Winston Hills lot.

See what's in the $9 report →

Winston Hills planning - frequently asked

Is Winston Hills flood-prone?

Flood mapping covers Winston Hills and none of the suburb falls within a mapped flood overlay (the council-wide suburb average is 1%). Published flood models are held over parts of Winston Hills; the free check on the Flood Model Report page says whether one reaches a given address.

Is Winston Hills bushfire-prone?

Around 9% of Winston Hills is mapped as bushfire-prone, compared with a City Of Parramatta average of 6%.

Is Winston Hills under a flight path?

Aircraft were observed below 3,000 ft over about 85% of Winston Hills, and over about 100% 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 4,000 ft. At the busiest point in the suburb about 30 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 Winston Hills?

The dominant planning zone in Winston Hills is Low Density Residential, though the suburb also includes Public Recreation and Environmental Conservation.

Does Winston Hills have heritage-listed places?

Winston Hills has 21 heritage-listed places on record.

What is the typical lot size in Winston Hills?

Across 4,052 surveyed parcels in Winston Hills, the median lot size is about 612 m². There are also 9 registered easements mapped in the suburb.

Does Winston Hills have a train station?

There is no train station inside Winston Hills itself. The suburb is served by 162 bus stops.

What is the population of Winston Hills?

At the 2021 Census Winston Hills had 12,123 usual residents, with a median age of 41 and an average household size of 2.9 people. The wider Winston Hills statistical area, which contains Winston Hills, went from 10,725 people in 2001 to 11,218 in 2025, up 5%.

Is Winston Hills an advantaged suburb?

On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Winston Hills scores 1095 and sits in decile 10 of 10 nationally and decile 10 within New South Wales (decile 1 is the most disadvantaged tenth, decile 10 the least).

What is the median household income in Winston Hills?

Median household income in Winston Hills was $2,309 a week at the 2021 Census, against $1,993 for the typical suburb in City Of Parramatta. Median rent was $530 a week and the median mortgage repayment $2,681 a month.

Compare nearby suburbs

Nearby suburb	Distance	Flood mapped	Bushfire-prone
Northmead	1.7 km	0%	22%
Constitution Hill	1.9 km	0%	0%
Old Toongabbie	1.9 km	0%	2%
Baulkham Hills The Hills Shire	2.6 km	0%	13%
Toongabbie	2.7 km	6%	0%
North Parramatta	3.1 km	Not mapped	30%
North Rocks	3.4 km	0%	48%
Wentworthville Cumberland	3.5 km	Not mapped	0%
Westmead Cumberland	3.6 km	Not mapped	0%
Pendle Hill Cumberland	3.8 km	Not mapped	0%

See all City Of Parramatta suburb profiles →