Gwynneville flood map & planning overlays
A planning-constraint profile of Gwynneville
(Wollongong, NSW) - 1.23 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
1.23 km² - this suburb is moderately constrained by planning overlays.
Elevation hillshade with street names, clipped to Gwynneville'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 Gwynneville
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: not established - night is sampled as often as day, but too few night flights have been seen here to conclude either way.
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.
Gwynneville at a glance
How Gwynneville is zoned
Buying in Gwynneville? 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 1.23 km², Gwynneville is moderately constrained by planning overlays. About 28% of the suburb sits within a mapped flood overlay, and 7% is flagged bushfire-prone. There is 1 heritage-listed site on record, and the dominant land-use zone is Low Density Residential. The median lot measures about 644 m² across 784 parcels.
Who lives in Gwynneville
Census 2021 figures published by the ABS for the Gwynneville 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 988, and decile 5 within New South Wales. The national average is 1000.
Age profile
Share of Gwynneville's 3,139 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Wollongong - West, the wider ABS statistical area containing Gwynneville. There is no annual population series published at suburb level, so this describes the surrounding area rather than Gwynneville itself.
14,827 in 2001 to 17,595 in 2025, up 19%.
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.
Gwynneville 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 Gwynneville 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 44% of Gwynneville. 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 an indicative AS 2870 site class for a Gwynneville lot.
See what's in the $9 report →Gwynneville planning - frequently asked
Is Gwynneville flood-prone?
About 28% of Gwynneville falls within a mapped flood overlay, against the council-wide suburb average of 12%.
Is Gwynneville bushfire-prone?
Around 7% of Gwynneville is mapped as bushfire-prone, compared with a Wollongong average of 56%.
Is Gwynneville under a flight path?
Aircraft were observed below 3,000 ft over about 44% of Gwynneville, and over about 97% 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 1,500 ft, with an average of 5,000 ft. At the busiest point in the suburb about 1 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 Gwynneville?
The dominant planning zone in Gwynneville is Low Density Residential, though the suburb also includes Public Recreation and Infrastructure.
Does Gwynneville have heritage-listed places?
Gwynneville has 1 heritage-listed place on record.
What is the typical lot size in Gwynneville?
Across 784 surveyed parcels in Gwynneville, the median lot size is about 644 m².
Does Gwynneville have a train station?
There is no train station inside Gwynneville itself. The suburb is served by 66 bus stops.
What is the population of Gwynneville?
At the 2021 Census Gwynneville had 3,139 usual residents, with a median age of 29 and an average household size of 2.6 people. The wider Wollongong - West statistical area, which contains Gwynneville, went from 14,827 people in 2001 to 17,595 in 2025, up 19%.
Is Gwynneville an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Gwynneville scores 988 and sits in decile 6 of 10 nationally and decile 5 within New South Wales (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Gwynneville?
Median household income in Gwynneville was $1,394 a week at the 2021 Census, against $1,912 for the typical suburb in Wollongong. Median rent was $350 a week and the median mortgage repayment $2,250 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Keiraville | 1.2 km | 26% | 25% |
| Mount Ousley | 1.6 km | 19% | 26% |
| North Wollongong | 1.7 km | 64% | 33% |
| Wollongong | 1.7 km | 35% | <1% |
| West Wollongong | 1.8 km | 8% | 4% |
| Fairy Meadow | 2.1 km | 50% | 1% |
| Mangerton | 2.2 km | 9% | 23% |
| Mount Pleasant | 2.5 km | 16% | 76% |
| Coniston | 2.6 km | 42% | 10% |
| Mount Saint Thomas | 3.1 km | 18% | 15% |