St Helena flood map & planning overlays
St Helena shares Banyule's oldest median, 46, joint 1st.
Free map preview, then PDF reports from $9 - about the price of an iced latte on a public holiday.
A planning-constraint profile of St Helena
(Banyule, VIC) - 1.61 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 24 October 2026.
Constraint readout
1.61 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to St Helena'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 Helena
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 1 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.
St Helena at a glance
How St Helena is zoned
Selling in St Helena? The zoning and planning overlays on this page are the controls a Section 32 vendor statement discloses.
Across its 1.61 km², St Helena is highly constrained by planning overlays. About 4% of the suburb sits within a mapped flood overlay, and 29% is flagged bushfire-prone. There are 3 heritage-listed sites on record, and the dominant land-use zone is Neighbourhood Residential Zone (NRZ3). The median lot measures about 727 m² across 1,221 parcels.
Who lives in St Helena
Census 2021 figures published by the ABS for the St Helena 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 1066, and decile 9 within Victoria. The national average is 1000.
Age profile
Share of St Helena's 2,890 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Greensborough, the wider ABS statistical area containing St Helena. There is no annual population series published at suburb level, so this describes the surrounding area rather than St Helena itself.
21,359 in 2001 to 21,386 in 2025, up 0%.
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 Helena 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 St Helena 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 St Helena. 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 St Helena lot.
St Helena planning - frequently asked
Is St Helena flood-prone?
About 4% of St Helena falls within a mapped flood overlay, against the council-wide suburb average of 12%.
Is St Helena bushfire-prone?
Around 29% of St Helena is mapped as bushfire-prone, compared with a Banyule average of 13%.
Is St Helena under a flight path?
Aircraft were observed below 3,000 ft over about 42% of St Helena, and over about 65% 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 1,000 ft, with an average of 3,500 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 Helena?
The dominant planning zone in St Helena is Neighbourhood Residential Zone (NRZ3), though the suburb also includes General Residential Zone (GRZ2) and Public Park and Recreation Zone (PPRZ).
Does St Helena have heritage-listed places?
St Helena has 3 heritage-listed places on record.
What is the typical lot size in St Helena?
Across 1,221 surveyed parcels in St Helena, the median lot size is about 727 m². There are also 623 registered easements mapped in the suburb.
Does St Helena have a train station?
There is no train station inside St Helena itself. The suburb is served by 13 bus stops.
What is the population of St Helena?
At the 2021 Census St Helena had 2,890 usual residents, with a median age of 46 and an average household size of 2.7 people. The wider Greensborough statistical area, which contains St Helena, went from 21,359 people in 2001 to 21,386 in 2025, up 0%.
Is St Helena an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), St Helena scores 1066 and sits in decile 9 of 10 nationally and decile 9 within Victoria (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in St Helena?
Median household income in St Helena was $2,256 a week at the 2021 Census, against $2,072 for the typical suburb in Banyule. Median rent was $163 a week and the median mortgage repayment $2,167 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Greensborough | 1.6 km | 8% | 20% |
| Briar Hill | 1.8 km | 4% | 3% |
| Eltham North Nillumbik |
1.9 km | 7% | 54% |
| Plenty Nillumbik |
2.9 km | 2% | 98% |
| Watsonia North | 3.3 km | 5% | 0% |
| Montmorency | 3.4 km | 7% | 1% |
| Eltham Nillumbik |
3.9 km | 12% | 68% |
| Watsonia | 4.2 km | 3% | 0% |
| Diamond Creek Nillumbik |
4.3 km | 7% | 82% |
| Yallambie | 4.9 km | 6% | 29% |