Blue Bay flood map & planning overlays
A planning-constraint profile of Blue Bay
(Central Coast, NSW) - 0.54 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
0.54 km² - this suburb is moderately constrained by planning overlays.
Elevation hillshade with street names, clipped to Blue 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 Blue 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 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.
Blue Bay at a glance
How Blue Bay is zoned
Buying in Blue 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 0.54 km², Blue Bay is moderately constrained by planning overlays. About 36% of the suburb sits within a mapped flood overlay. The dominant land-use zone is General Residential. The median lot measures about 697 m² across 446 parcels.
Who lives in Blue Bay
Census 2021 figures published by the ABS for the Blue 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 983, and decile 5 within New South Wales. The national average is 1000.
Age profile
Share of Blue Bay's 1,060 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of The Entrance, the wider ABS statistical area containing Blue Bay. There is no annual population series published at suburb level, so this describes the surrounding area rather than Blue Bay itself.
11,941 in 2001 to 16,336 in 2025, up 37%.
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.
Blue 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 Blue 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 100% of Blue 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 Blue Bay lot.
See what's in the $9 report →Blue Bay planning - frequently asked
Is Blue Bay flood-prone?
About 36% of Blue Bay falls within a mapped flood overlay, against the council-wide suburb average of 30%.
Is Blue Bay bushfire-prone?
Bushfire mapping covers Blue Bay and little to none of it is mapped as bushfire-prone (the Central Coast average is 69%).
Is Blue Bay under a flight path?
Aircraft were observed below 3,000 ft over about 100% of Blue Bay, in the period sampled (4 Sep 2026 to 2 Oct 2026). The lowest measured aircraft was at 500 ft, with an average of 2,000 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 Blue Bay?
The dominant planning zone in Blue Bay is General Residential, though the suburb also includes Public Recreation and Low Density Residential.
Does Blue Bay have heritage-listed places?
No heritage-listed places are on record within Blue Bay.
What is the typical lot size in Blue Bay?
Across 446 surveyed parcels in Blue Bay, the median lot size is about 697 m². There are also 12 registered easements mapped in the suburb.
Does Blue Bay have a train station?
There is no train station inside Blue Bay itself. The suburb is served by 16 bus stops.
What is the population of Blue Bay?
At the 2021 Census Blue Bay had 1,060 usual residents, with a median age of 52 and an average household size of 2.1 people. The wider The Entrance statistical area, which contains Blue Bay, went from 11,941 people in 2001 to 16,336 in 2025, up 37%.
Is Blue Bay an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Blue Bay scores 983 and sits in decile 5 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 Blue Bay?
Median household income in Blue Bay was $1,323 a week at the 2021 Census, against $1,735 for the typical suburb in Central Coast. Median rent was $380 a week and the median mortgage repayment $2,167 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Toowoon Bay | 0.9 km | 38% | 26% |
| Long Jetty | 1.2 km | 41% | 2% |
| The Entrance | 1.2 km | 40% | 0% |
| Shelly Beach | 2.3 km | 24% | 21% |
| The Entrance North | 2.4 km | 58% | 4% |
| Killarney Vale | 3.7 km | 50% | 20% |
| Bateau Bay | 4.4 km | 34% | 53% |
| Berkeley Vale | 6.3 km | 67% | 44% |
| Chittaway Point | 6.3 km | 99% | 79% |
| Magenta | 6.5 km | 8% | 94% |