St Leonards zoning & planning overlays
A planning-constraint profile of St Leonards
(Willoughby, NSW) - 0.8 km², mapped from live council and
state overlay data. This suburb is relatively unconstrained on the overlays we could measure - no flood mapping covers this suburb, so this is not a suburb-wide verdict.
Profile updated 3 October 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
0.8 km² - this suburb is relatively unconstrained on the overlays we could measure - no flood mapping covers this suburb, so this is not a suburb-wide verdict.
Elevation hillshade with street names, clipped to St Leonards's boundary, with the bushfire and environmental overlays drawn on top. Magenta is where aircraft were observed in the sampled period, brightest below 3,000 ft. No flood layer is drawn because we hold no flood mapping for this area.
Nearby suburbs, nearest first
Aircraft noise and flight paths over St Leonards
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 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 Leonards at a glance
How St Leonards is zoned
Buying in St Leonards? 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 0.8 km², St Leonards is relatively unconstrained by the planning overlays we hold. We hold no flood mapping covering this suburb, so no flood figure is shown - that is a gap in our data, not an all-clear. There are 12 heritage-listed sites on record, and the dominant land-use zone is Infrastructure. The median lot measures about 441 m² across 351 parcels.
Who lives in St Leonards
Census 2021 figures published by the ABS for the St Leonards 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 1175, and decile 10 within New South Wales. The national average is 1000.
Age profile
Share of St Leonards's 7,212 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of St Leonards - Naremburn, the wider ABS statistical area containing St Leonards. There is no annual population series published at suburb level, so this describes the surrounding area rather than St Leonards itself.
7,001 in 2001 to 13,802 in 2025, up 97%.
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 Leonards data sources and coverage
“Not mapped” means we hold no source layer for this suburb - never an all-clear.
| Dataset | Coverage | Publisher |
|---|---|---|
| Flood mapping | Not 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 Leonards 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 St Leonards. The report's Aircraft Overflight page narrows that to the address itself: how many aircraft a day, how low, and at what heights.
Published flood models are held over parts of St Leonards. The free check tells you whether one reaches an address; where it does, a Flood Model Report is +$9 with the planning report.
Building or pricing a slab? The $119 geotechnical desktop report covers geology, soils, bores and an indicative AS 2870 site class for a St Leonards lot.
See what's in the $9 report →St Leonards planning - frequently asked
Is St Leonards flood-prone?
We don't yet hold flood mapping covering St Leonards, so this page can't say how much of the suburb is flood-affected - that is a gap in our data, not an indication that the suburb is free of flood risk. Willoughby is the authority to check for flood mapping in this area. Published flood models are held over parts of St Leonards; the free check on the Flood Model Report page says whether one reaches a given address.
Is St Leonards bushfire-prone?
Bushfire mapping covers St Leonards and little to none of it is mapped as bushfire-prone (the Willoughby average is 26%).
Is St Leonards under a flight path?
Aircraft were observed below 3,000 ft over about 100% of St Leonards, in the period sampled (4 Sep 2026 to 2 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 3 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 Leonards?
The dominant planning zone in St Leonards is Infrastructure, though the suburb also includes High Density Residential and Commercial Centre.
Does St Leonards have heritage-listed places?
St Leonards has 12 heritage-listed places on record.
What is the typical lot size in St Leonards?
Across 351 surveyed parcels in St Leonards, the median lot size is about 441 m². There are also 1 registered easements mapped in the suburb.
Does St Leonards have a train station?
Yes - St Leonards has 1 train station: St Leonards Station. It is also served by 18 bus stops.
What is the population of St Leonards?
At the 2021 Census St Leonards had 7,212 usual residents, with a median age of 34 and an average household size of 1.9 people. The wider St Leonards - Naremburn statistical area, which contains St Leonards, went from 7,001 people in 2001 to 13,802 in 2025, up 97%.
Is St Leonards an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), St Leonards scores 1175 and sits in decile 10 of 10 nationally and decile 10 within New South Wales (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in St Leonards?
Median household income in St Leonards was $2,475 a week at the 2021 Census, against $3,196 for the typical suburb in Willoughby. Median rent was $600 a week and the median mortgage repayment $2,600 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Crows Nest North Sydney |
1.0 km | Not mapped | 0% |
| Naremburn | 1.0 km | Not mapped | 6% |
| Greenwich Lane Cove |
1.0 km | Not mapped | 13% |
| Wollstonecraft North Sydney |
1.2 km | Not mapped | 21% |
| Artarmon | 1.4 km | Not mapped | 6% |
| Northwood Lane Cove |
1.5 km | Not mapped | 15% |
| Willoughby | 1.9 km | Not mapped | <1% |
| Cammeray North Sydney |
2.0 km | Not mapped | 10% |
| Waverton North Sydney |
2.0 km | Not mapped | 19% |
| North Sydney North Sydney |
2.1 km | Not mapped | 0% |