Oyster Bay flood map & planning overlays
A planning-constraint profile of Oyster Bay
(Sutherland Shire, NSW) - 3.11 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
3.11 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Oyster 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 Oyster 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 1,500 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.
Oyster Bay at a glance
How Oyster Bay is zoned
Buying in Oyster 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 3.11 km², Oyster Bay is highly constrained by planning overlays. About 34% of the suburb sits within a mapped flood overlay, and 11% is flagged bushfire-prone. There are 9 heritage-listed sites on record, and the dominant land-use zone is Natural Waterways. The median lot measures about 680 m² across 1,952 parcels.
Who lives in Oyster Bay
Census 2021 figures published by the ABS for the Oyster 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 1140, and decile 10 within New South Wales. The national average is 1000.
Age profile
Share of Oyster Bay's 5,689 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Oyster Bay - Como - Jannali, the wider ABS statistical area containing Oyster Bay. There is no annual population series published at suburb level, so this describes the surrounding area rather than Oyster Bay itself.
21,252 in 2001 to 22,878 in 2025, up 8%.
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.
Oyster 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 Oyster 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 31% of Oyster 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 Oyster Bay lot.
See what's in the $9 report →Oyster Bay planning - frequently asked
Is Oyster Bay flood-prone?
About 34% of Oyster Bay falls within a mapped flood overlay, against the council-wide suburb average of 22%.
Is Oyster Bay bushfire-prone?
Around 11% of Oyster Bay is mapped as bushfire-prone, compared with a Sutherland Shire average of 46%.
Is Oyster Bay under a flight path?
Aircraft were observed below 3,000 ft over about 31% of Oyster 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 4,500 ft. At the busiest point in the suburb about 9 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 Oyster Bay?
The dominant planning zone in Oyster Bay is Natural Waterways, though the suburb also includes Environmental Management and Low Density Residential.
Does Oyster Bay have heritage-listed places?
Oyster Bay has 9 heritage-listed places on record.
What is the typical lot size in Oyster Bay?
Across 1,952 surveyed parcels in Oyster Bay, the median lot size is about 680 m². There are also 105 registered easements mapped in the suburb.
Does Oyster Bay have a train station?
There is no train station inside Oyster Bay itself. The suburb is served by 62 bus stops.
What is the population of Oyster Bay?
At the 2021 Census Oyster Bay had 5,689 usual residents, with a median age of 40 and an average household size of 3.1 people. The wider Oyster Bay - Como - Jannali statistical area, which contains Oyster Bay, went from 21,252 people in 2001 to 22,878 in 2025, up 8%.
Is Oyster Bay an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Oyster Bay scores 1140 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 Oyster Bay?
Median household income in Oyster Bay was $3,137 a week at the 2021 Census, against $2,626 for the typical suburb in Sutherland Shire. Median rent was $620 a week and the median mortgage repayment $3,190 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Kareela | 1.2 km | 8% | 12% |
| Kangaroo Point | 1.5 km | 70% | 0% |
| Jannali | 1.7 km | 0% | 33% |
| Sylvania | 1.8 km | 32% | 0% |
| Como | 1.9 km | 24% | 21% |
| Kyle Bay Georges River |
2.4 km | 0% | 1% |
| Connells Point Georges River |
2.4 km | 4% | 2% |
| Bonnet Bay | 2.6 km | 36% | 59% |
| Oatley Georges River |
2.7 km | 18% | 24% |
| Blakehurst Georges River |
3.1 km | 2% | 5% |