Coronet Bay flood map & planning overlays
Coronet Bay keeps 534 m² lots, joint 2nd-smallest in Bass Coast.
Free map preview, then PDF reports from $9 - about the price of an iced latte on a public holiday.
A planning-constraint profile of Coronet Bay
(Bass Coast, VIC) - 4.99 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 24 October 2026.
Constraint readout
4.99 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Coronet 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 Coronet Bay
The ANEF contour is a published planning forecast and observed overflight is what a sampled tracking feed recorded - neither describes any individual property.
Observed overflight - sampled 4 Sep to 24 Oct 2026
typical observed square 0 a day
Night movements: observed, lowest 2,500 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.
How this is measured
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.
Coronet Bay at a glance
How Coronet Bay is zoned
Selling in Coronet Bay? The zoning and planning overlays on this page are the controls a Section 32 vendor statement discloses.
Across its 4.99 km², Coronet Bay is highly constrained by planning overlays. About 2% of the suburb sits within a mapped flood overlay, and 79% is flagged bushfire-prone. There is 1 heritage-listed site on record, and the dominant land-use zone is Farming Zone (FZ). The median lot measures about 534 m² across 1,311 parcels.
Who lives in Coronet Bay
Census 2021 figures published by the ABS for the Coronet 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 890, and decile 1 within Victoria. The national average is 1000.
Age profile
Share of Coronet Bay's 1,108 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Wonthaggi - Inverloch, the wider ABS statistical area containing Coronet Bay. There is no annual population series published at suburb level, so this describes the surrounding area rather than Coronet Bay itself.
17,647 in 2001 to 29,333 in 2025, up 66%.
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.
Coronet 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 | Vicmap Planning and Victorian Government spatial services |
| Bushfire-prone mapping | Mapped | Vicmap Planning and Victorian Government spatial services |
| Zoning | Mapped | Vicmap Planning and Victorian Government spatial services |
| Heritage and environment | Mapped where published | Vicmap Planning and Victorian Government spatial services |
| Aircraft noise contours (ANEF) | Not held | Vicmap Planning and Victorian Government spatial services, 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 24 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 Coronet 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.
See what's in the $9 report →Aircraft have been seen below 3,000 ft over about 43% of Coronet 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 the indicative soil reactivity range to expect for a Coronet Bay lot.
Coronet Bay planning - frequently asked
Is Coronet Bay flood-prone?
About 2% of Coronet Bay falls within a mapped flood overlay, against the council-wide suburb average of 15%.
Is Coronet Bay bushfire-prone?
Around 79% of Coronet Bay is mapped as bushfire-prone, compared with a Bass Coast average of 93%.
Is Coronet Bay under a flight path?
Aircraft were observed below 3,000 ft over about 43% of Coronet Bay, and over about 69% at any altitude up to 10,000 ft, in the period sampled (4 Sep 2026 to 24 Oct 2026). The lowest measured aircraft was at 500 ft, with an average of 2,500 ft. At the busiest point in the suburb about 0 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 Coronet Bay?
The dominant planning zone in Coronet Bay is Farming Zone (FZ), though the suburb also includes Rural Activity Zone (RAZ) and General Residential Zone (GRZ1).
Does Coronet Bay have heritage-listed places?
Coronet Bay has 1 heritage-listed place on record.
What is the typical lot size in Coronet Bay?
Across 1,311 surveyed parcels in Coronet Bay, the median lot size is about 534 m². There are also 362 registered easements mapped in the suburb.
Does Coronet Bay have a train station?
There is no train station inside Coronet Bay itself. The suburb is served by 11 bus stops.
What is the population of Coronet Bay?
At the 2021 Census Coronet Bay had 1,108 usual residents, with a median age of 51 and an average household size of 2.0 people. The wider Wonthaggi - Inverloch statistical area, which contains Coronet Bay, went from 17,647 people in 2001 to 29,333 in 2025, up 66%.
Is Coronet Bay an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Coronet Bay scores 890 and sits in decile 2 of 10 nationally and decile 1 within Victoria (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Coronet Bay?
Median household income in Coronet Bay was $952 a week at the 2021 Census, against $1,286 for the typical suburb in Bass Coast. Median rent was $281 a week and the median mortgage repayment $1,300 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Corinella | 3.0 km | 16% | 93% |
| Tenby Point | 3.5 km | <1% | 100% |
| Queensferry | 5.2 km | 100% | 100% |
| Bass | 5.3 km | 20% | 100% |
| Glen Forbes | 6.2 km | 2% | 100% |
| Elizabeth Island French-Elizabeth-Sandstone Islands (Uninc) |
7.0 km | 9% | 100% |
| Adams Estate | 7.6 km | Not mapped | 100% |
| Grantville | 8.2 km | 14% | 100% |
| Anderson | 9.8 km | 0% | 100% |
| Woolamai | 10.2 km | Not mapped | 100% |