St Johns Park flood map & planning overlays
A planning-constraint profile of St Johns Park
(Fairfield, NSW) - 1.97 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
1.97 km² - this suburb is moderately constrained by planning overlays.
Elevation hillshade with street names, clipped to St Johns Park'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 Johns Park
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 3 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 Johns Park at a glance
How St Johns Park is zoned
Buying in St Johns Park? 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 1.97 km², St Johns Park is moderately constrained by planning overlays. About 7% of the suburb sits within a mapped flood overlay. There are 2 heritage-listed sites on record, and the dominant land-use zone is Low Density Residential. The median lot measures about 566 m² across 1,857 parcels.
Who lives in St Johns Park
Census 2021 figures published by the ABS for the St Johns Park 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 929, and decile 2 within New South Wales. The national average is 1000.
Age profile
Share of St Johns Park's 6,302 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of St Johns Park - Wakeley, the wider ABS statistical area containing St Johns Park. There is no annual population series published at suburb level, so this describes the surrounding area rather than St Johns Park itself.
11,454 in 2001 to 11,224 in 2025, down 2%.
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 Johns Park 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 Johns Park 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 Johns Park. 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 Johns Park. 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 Johns Park lot.
See what's in the $9 report →St Johns Park planning - frequently asked
Is St Johns Park flood-prone?
About 7% of St Johns Park falls within a mapped flood overlay, against the council-wide suburb average of 28%. Published flood models are held over parts of St Johns Park; the free check on the Flood Model Report page says whether one reaches a given address.
Is St Johns Park bushfire-prone?
Bushfire mapping covers St Johns Park and little to none of it is mapped as bushfire-prone (the Fairfield average is 10%).
Is St Johns Park under a flight path?
Aircraft were observed below 3,000 ft over about 100% of St Johns Park, 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 8 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 Johns Park?
The dominant planning zone in St Johns Park is Low Density Residential, though the suburb also includes Environmental Conservation and Public Recreation.
Does St Johns Park have heritage-listed places?
St Johns Park has 2 heritage-listed places on record.
What is the typical lot size in St Johns Park?
Across 1,857 surveyed parcels in St Johns Park, the median lot size is about 566 m². There are also 1 registered easements mapped in the suburb.
Does St Johns Park have a train station?
There is no train station inside St Johns Park itself. The suburb is served by 62 bus stops.
What is the population of St Johns Park?
At the 2021 Census St Johns Park had 6,302 usual residents, with a median age of 43 and an average household size of 3.3 people. The wider St Johns Park - Wakeley statistical area, which contains St Johns Park, went from 11,454 people in 2001 to 11,224 in 2025, down 2%.
Is St Johns Park an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), St Johns Park scores 929 and sits in decile 3 of 10 nationally and decile 2 within New South Wales (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in St Johns Park?
Median household income in St Johns Park was $1,567 a week at the 2021 Census, against $1,486 for the typical suburb in Fairfield. Median rent was $450 a week and the median mortgage repayment $2,089 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Wakeley | 1.1 km | 23% | <1% |
| Greenfield Park | 1.2 km | 15% | 5% |
| Cabramatta West | 1.5 km | 20% | 0% |
| Bonnyrigg | 1.6 km | 8% | 6% |
| Prairiewood | 1.9 km | 26% | 12% |
| Canley Heights | 2.1 km | 41% | 3% |
| Edensor Park | 2.4 km | 13% | 1% |
| Fairfield West | 2.4 km | 16% | 2% |
| Mount Pritchard | 2.4 km | 18% | 4% |
| Bossley Park | 2.8 km | 7% | 5% |