Grace Plains flood map & planning overlays
A planning-constraint profile of Grace Plains
(Adelaide Plains Council, SA) - 56.54 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 26 September 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
56.54 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Grace Plains'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 Grace Plains
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 26 Sep 2026
typical observed square 1 a day
Night movements: observed, lowest 3,000 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.
Grace Plains at a glance
How Grace Plains is zoned
Selling in Grace Plains? The zone and overlays on this page are the Planning and Design Code controls a Form 1 vendor's statement has to disclose.
Across its 56.54 km², Grace Plains is highly constrained by planning overlays. Flood mapping covers the suburb and none of it falls within a mapped flood overlay, and 100% is flagged bushfire-prone. The dominant land-use zone is Rural. The median lot measures about 437,367 m² across 123 parcels.
Who lives in Grace Plains
Census 2021 figures published by the ABS for the Grace Plains 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 984, and decile 6 within South Australia. The national average is 1000.
Age profile
Share of Grace Plains's 61 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Mallala, the wider ABS statistical area containing Grace Plains. There is no annual population series published at suburb level, so this describes the surrounding area rather than Grace Plains itself.
2,897 in 2001 to 3,561 in 2025, up 23%.
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.
Grace Plains 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 | the South Australian Planning and Design Code and Location SA spatial data |
| Bushfire-prone mapping | Mapped | the South Australian Planning and Design Code and Location SA spatial data |
| Zoning | Mapped | the South Australian Planning and Design Code and Location SA spatial data |
| Heritage and environment | Mapped where published | the South Australian Planning and Design Code and Location SA spatial data |
| Aircraft noise contours (ANEF) | Not held | the South Australian Planning and Design Code and Location SA spatial data, 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 26 September 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 Grace Plains 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 16% of Grace Plains. 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 Grace Plains lot.
See what's in the $9 report →Grace Plains planning - frequently asked
Is Grace Plains flood-prone?
Flood mapping covers Grace Plains and none of the suburb falls within a mapped flood overlay (the council-wide suburb average is 14%).
Is Grace Plains bushfire-prone?
Around 100% of Grace Plains is mapped as bushfire-prone, compared with a Adelaide Plains Council average of 81%.
Is Grace Plains under a flight path?
Aircraft were observed below 3,000 ft over about 16% of Grace Plains, and over about 46% at any altitude up to 10,000 ft, in the period sampled (4 Sep 2026 to 26 Sep 2026). The lowest measured aircraft was at 500 ft, with an average of 4,000 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 Grace Plains?
The dominant planning zone in Grace Plains is Rural.
Does Grace Plains have heritage-listed places?
No heritage-listed places are on record within Grace Plains.
What is the typical lot size in Grace Plains?
Across 123 surveyed parcels in Grace Plains, the median lot size is about 437,367 m².
What is the population of Grace Plains?
At the 2021 Census Grace Plains had 61 usual residents, with a median age of 41 and an average household size of 2.6 people. The wider Mallala statistical area, which contains Grace Plains, went from 2,897 people in 2001 to 3,561 in 2025, up 23%.
Is Grace Plains an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Grace Plains scores 984 and sits in decile 5 of 10 nationally and decile 6 within South Australia (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Grace Plains?
Median household income in Grace Plains was $1,624 a week at the 2021 Census, against $1,552 for the typical suburb in Adelaide Plains Council.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Pinery Wakefield Regional Council |
7.7 km | 0% | 100% |
| Calomba | 8.5 km | 0% | 100% |
| Barabba | 9.1 km | <1% | 100% |
| Mallala | 10.0 km | 4% | 100% |
| Stockyard Creek Wakefield Regional Council |
12.0 km | 0% | 100% |
| Long Plains | 12.4 km | 0% | 100% |
| Owen Wakefield Regional Council |
12.5 km | 0% | 100% |
| Pinkerton Plains Light Regional Council |
14.0 km | 1% | 100% |
| Hamley Bridge Wakefield Regional Council |
14.9 km | 0% | 100% |
| Redbanks | 16.0 km | 12% | 100% |