Kogarah Bay flood map & planning overlays
A planning-constraint profile of Kogarah Bay
(Georges River, NSW) - 0.88 km², mapped from live council and
state overlay data. This suburb is relatively unconstrained.
Profile updated 3 October 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
0.88 km² - this suburb is relatively unconstrained by planning overlays.
Elevation hillshade with street names, clipped to Kogarah Bay'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 Kogarah Bay
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 2 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.
Kogarah Bay at a glance
How Kogarah Bay is zoned
Buying in Kogarah Bay? 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 0.88 km², Kogarah Bay is relatively unconstrained by planning overlays. About 10% of the suburb sits within a mapped flood overlay. There is 1 heritage-listed site on record, and the dominant land-use zone is Low Density Residential. The median lot measures about 596 m² across 778 parcels.
Who lives in Kogarah Bay
Census 2021 figures published by the ABS for the Kogarah Bay 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 1091, and decile 10 within New South Wales. The national average is 1000.
Age profile
Share of Kogarah Bay's 2,102 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Kogarah Bay - Carlton - Allawah, the wider ABS statistical area containing Kogarah Bay. There is no annual population series published at suburb level, so this describes the surrounding area rather than Kogarah Bay itself.
14,275 in 2001 to 17,669 in 2025, up 24%.
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.
Kogarah Bay 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 Kogarah Bay 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 54% of Kogarah Bay. 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 Kogarah Bay lot.
See what's in the $9 report →Kogarah Bay planning - frequently asked
Is Kogarah Bay flood-prone?
About 10% of Kogarah Bay falls within a mapped flood overlay, against the council-wide suburb average of 12%.
Is Kogarah Bay bushfire-prone?
Bushfire mapping covers Kogarah Bay and little to none of it is mapped as bushfire-prone (the Georges River average is 7%).
Is Kogarah Bay under a flight path?
Aircraft were observed below 3,000 ft over about 54% of Kogarah Bay, 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 3,500 ft. At the busiest point in the suburb about 2 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 Kogarah Bay?
The dominant planning zone in Kogarah Bay is Low Density Residential, though the suburb also includes Recreational Waterways and Public Recreation.
Does Kogarah Bay have heritage-listed places?
Kogarah Bay has 1 heritage-listed place on record.
What is the typical lot size in Kogarah Bay?
Across 778 surveyed parcels in Kogarah Bay, the median lot size is about 596 m².
Does Kogarah Bay have a train station?
There is no train station inside Kogarah Bay itself. The suburb is served by 36 bus stops.
What is the population of Kogarah Bay?
At the 2021 Census Kogarah Bay had 2,102 usual residents, with a median age of 44 and an average household size of 3.1 people. The wider Kogarah Bay - Carlton - Allawah statistical area, which contains Kogarah Bay, went from 14,275 people in 2001 to 17,669 in 2025, up 24%.
Is Kogarah Bay an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Kogarah Bay scores 1091 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 Kogarah Bay?
Median household income in Kogarah Bay was $2,528 a week at the 2021 Census, against $2,050 for the typical suburb in Georges River. Median rent was $650 a week and the median mortgage repayment $2,963 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Carss Park | 0.8 km | 6% | 0% |
| Beverley Park | 0.9 km | 41% | 0% |
| Ramsgate Bayside |
1.4 km | 16% | 0% |
| Sans Souci | 1.4 km | 16% | 0% |
| Carlton | 1.5 km | 8% | 0% |
| Blakehurst | 1.6 km | 2% | 5% |
| Allawah | 1.6 km | 12% | 0% |
| South Hurstville | 1.9 km | 10% | 2% |
| Ramsgate Beach Bayside |
2.0 km | 0% | 0% |
| Kogarah | 2.0 km | 17% | 0% |