North Wonthaggi flood map & planning overlays
North Wonthaggi, with 3,475 people, is Bass Coast's 4th-biggest suburb.
Free map preview, then PDF reports from $9 - about the price of an iced latte on a public holiday.
A planning-constraint profile of North Wonthaggi
(Bass Coast, VIC) - 10.18 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 24 October 2026.
Constraint readout
10.18 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to North Wonthaggi'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 North Wonthaggi
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
Night movements: not established - night is sampled as often as day, but too few night flights have been seen here to conclude either way.
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.
North Wonthaggi at a glance
How North Wonthaggi is zoned
Selling in North Wonthaggi? The zoning and planning overlays on this page are the controls a Section 32 vendor statement discloses.
Across its 10.18 km², North Wonthaggi is highly constrained by planning overlays. About 14% of the suburb sits within a mapped flood overlay, and 83% is flagged bushfire-prone. The dominant land-use zone is Farming Zone (FZ). The median lot measures about 697 m² across 2,772 parcels.
Who lives in North Wonthaggi
Census 2021 figures published by the ABS for the North Wonthaggi 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 909, and decile 1 within Victoria. The national average is 1000.
Age profile
Share of North Wonthaggi's 3,475 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Wonthaggi - Inverloch, the wider ABS statistical area containing North Wonthaggi. There is no annual population series published at suburb level, so this describes the surrounding area rather than North Wonthaggi 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.
North Wonthaggi 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 North Wonthaggi 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 42% of North Wonthaggi. 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 North Wonthaggi lot.
North Wonthaggi planning - frequently asked
Is North Wonthaggi flood-prone?
About 14% of North Wonthaggi falls within a mapped flood overlay, against the council-wide suburb average of 15%.
Is North Wonthaggi bushfire-prone?
Around 83% of North Wonthaggi is mapped as bushfire-prone, compared with a Bass Coast average of 93%.
Is North Wonthaggi under a flight path?
Aircraft were observed below 3,000 ft over about 42% of North Wonthaggi, and over about 58% 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. 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 North Wonthaggi?
The dominant planning zone in North Wonthaggi is Farming Zone (FZ), though the suburb also includes General Residential Zone (GRZ1) and Urban Growth Zone (UGZ1).
Does North Wonthaggi have heritage-listed places?
No heritage-listed places are on record within North Wonthaggi.
What is the typical lot size in North Wonthaggi?
Across 2,772 surveyed parcels in North Wonthaggi, the median lot size is about 697 m². There are also 714 registered easements mapped in the suburb.
Does North Wonthaggi have a train station?
There is no train station inside North Wonthaggi itself. The suburb is served by 7 bus stops.
What is the population of North Wonthaggi?
At the 2021 Census North Wonthaggi had 3,475 usual residents, with a median age of 42 and an average household size of 2.4 people. The wider Wonthaggi - Inverloch statistical area, which contains North Wonthaggi, went from 17,647 people in 2001 to 29,333 in 2025, up 66%.
Is North Wonthaggi an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), North Wonthaggi scores 909 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 North Wonthaggi?
Median household income in North Wonthaggi was $1,162 a week at the 2021 Census, against $1,286 for the typical suburb in Bass Coast. Median rent was $300 a week and the median mortgage repayment $1,300 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| South Dudley | 2.5 km | Not mapped | 96% |
| West Creek | 2.9 km | 29% | 100% |
| Archies Creek | 4.0 km | 0% | 100% |
| Dalyston | 4.2 km | 42% | 98% |
| Wonthaggi | 4.7 km | 2% | 93% |
| St Clair | 5.1 km | 34% | 100% |
| Ryanston | 7.7 km | <1% | 100% |
| Lance Creek | 7.8 km | 44% | 100% |
| Kilcunda | 7.9 km | 10% | 98% |
| Harmers Haven | 8.8 km | 4% | 100% |