St Huberts Island flood map & planning overlays
A planning-constraint profile of St Huberts Island
(Central Coast, NSW) - 2.71 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
2.71 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to St Huberts Island'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 St Huberts Island
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: observed, lowest 9,500 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.
St Huberts Island at a glance
How St Huberts Island is zoned
Buying in St Huberts Island? 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 2.71 km², St Huberts Island is highly constrained by planning overlays. About 97% of the suburb sits within a mapped flood overlay. The dominant land-use zone is Recreational Waterways. The median lot measures about 684 m² across 547 parcels.
Who lives in St Huberts Island
Census 2021 figures published by the ABS for the St Huberts Island 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 1046, and decile 8 within New South Wales. The national average is 1000.
Age profile
Share of St Huberts Island's 1,080 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Box Head - MacMasters Beach, the wider ABS statistical area containing St Huberts Island. There is no annual population series published at suburb level, so this describes the surrounding area rather than St Huberts Island itself.
10,153 in 2001 to 11,289 in 2025, up 11%.
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.
St Huberts Island 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 St Huberts Island 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 93% of St Huberts Island. 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 St Huberts Island lot.
See what's in the $9 report →St Huberts Island planning - frequently asked
Is St Huberts Island flood-prone?
About 97% of St Huberts Island falls within a mapped flood overlay, against the council-wide suburb average of 30%.
Is St Huberts Island bushfire-prone?
Bushfire mapping covers St Huberts Island and little to none of it is mapped as bushfire-prone (the Central Coast average is 69%).
Is St Huberts Island under a flight path?
Aircraft were observed below 3,000 ft over about 93% of St Huberts Island, 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 St Huberts Island?
The dominant planning zone in St Huberts Island is Recreational Waterways, though the suburb also includes Low Density Residential and National Parks and Nature Reserves.
Does St Huberts Island have heritage-listed places?
No heritage-listed places are on record within St Huberts Island.
What is the typical lot size in St Huberts Island?
Across 547 surveyed parcels in St Huberts Island, the median lot size is about 684 m².
Does St Huberts Island have a train station?
There is no train station inside St Huberts Island itself. The suburb is served by 26 bus stops.
What is the population of St Huberts Island?
At the 2021 Census St Huberts Island had 1,080 usual residents, with a median age of 58 and an average household size of 2.3 people. The wider Box Head - MacMasters Beach statistical area, which contains St Huberts Island, went from 10,153 people in 2001 to 11,289 in 2025, up 11%.
Is St Huberts Island an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), St Huberts Island scores 1046 and sits in decile 9 of 10 nationally and decile 8 within New South Wales (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in St Huberts Island?
Median household income in St Huberts Island was $1,605 a week at the 2021 Census, against $1,735 for the typical suburb in Central Coast. Median rent was $560 a week and the median mortgage repayment $2,800 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Blackwall | 1.6 km | 48% | 43% |
| Daleys Point | 1.6 km | 32% | 69% |
| Davistown | 1.8 km | 95% | 20% |
| Saratoga | 2.1 km | 58% | 32% |
| Booker Bay | 2.4 km | 82% | <1% |
| Empire Bay | 2.5 km | 60% | 61% |
| Ettalong Beach | 2.7 km | 54% | 5% |
| Koolewong | 3.1 km | 70% | 32% |
| Phegans Bay | 3.3 km | 28% | 89% |
| Wagstaffe | 3.3 km | 54% | 50% |