Grays Gate flood map & planning overlays
Grays Gate's 64 ha lots barely touch the overlays, with flood at 24.1% and bushfire at 18.6%.
Things you won't regret: spending $9 to know the lot before you commit.
Free map preview, then PDF reports from $9 - about the price of an iced latte on a public holiday.
A planning-constraint profile of Grays Gate
(Toowoomba Regional, QLD) - 29.8 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 7 November 2026.
Constraint readout
29.8 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Grays Gate'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
How common is mapped flood risk across Grays Gate properties?
Counts of properties, not share of land, across 48 analysed Grays Gate properties; no individual property result is identified.
Lot-level readout
Flood-risk rating across all 48 properties
From LayeredGeo's lot-risk engine: council flood overlays, historical flooding and terrain, resolved to each individual lot in Grays Gate.
Aircraft noise and flight paths over Grays Gate
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 7 Nov 2026
Night movements: observed, lowest 5,000 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.
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.
Grays Gate at a glance
Schools in and near Grays Gate
Public school-location data shows availability across the suburb; it does not rate schools or assign any individual address to a catchment.
Inside the suburb boundary
0 schools providing primary years and 0 providing secondary years. A combined school may be counted in both teaching levels.
Nearest school availability
Primary: 8.22 km from the suburb boundary
Secondary: 8.22 km from the suburb boundary
Source: Queensland Government school geographic information. Catchment boundaries can divide a suburb and change over time.
Which school zone is a Grays Gate address in? Check an address with our free school zone checker.
How Grays Gate is zoned
Selling in Grays Gate? The lot-level zone is the zoning Part 3 of Queensland's Form 2 seller disclosure statement asks for - see our Form 2 planning data guide.
Across its 29.8 km², Grays Gate is highly constrained by planning overlays. About 24% of the suburb sits within a mapped flood overlay, and 19% is flagged bushfire-prone. The dominant land-use zone is Rural. The terrain is largely flat, and the median lot measures about 644,204 m² across 38 parcels.
Who lives in Grays Gate
Census 2021 figures published by the ABS for the Grays Gate 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 1005, and decile 8 within Queensland. The national average is 1000.
Population trend, 2001 to 2025
Estimated resident population of Millmerran, the wider ABS statistical area containing Grays Gate. There is no annual population series published at suburb level, so this describes the surrounding area rather than Grays Gate itself.
3,413 in 2001 to 3,351 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.
Grays Gate 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 relevant council planning scheme and Queensland Government spatial data |
| Bushfire-prone mapping | Mapped | the relevant council planning scheme and Queensland Government spatial data |
| Zoning | Mapped | the relevant council planning scheme and Queensland Government spatial data |
| Heritage and environment | Mapped where published | the relevant council planning scheme and Queensland Government spatial data |
| Aircraft noise contours (ANEF) | Not held | the relevant council planning scheme and Queensland Government spatial data, Defence |
| Observed flight paths | Observed | adsb.lol, under the Open Database License |
| Demographics | Available | Australian Bureau of Statistics (2021 Census and SEIFA) |
| School availability | Available | Queensland Government |
Profile last materially updated 7 November 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 Grays Gate 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 8% of Grays Gate. 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 Grays Gate. The free check tells you whether one reaches an address; where it does, a Flood Model Report is +$9 with the planning report.
The Terrain Report shows the fall of the block - contours, cross sections and a 3D model of the lot to spin round in your browser (+$9 with the planning report).
Building or pricing a slab? The $119 geotechnical desktop report covers geology, soils, bores and the indicative soil reactivity range to expect for a Grays Gate lot.
Grays Gate planning - frequently asked
Is Grays Gate flood-prone?
About 24% of Grays Gate falls within a mapped flood overlay, against the council-wide suburb average of 27%. Across the suburb, 0% of the 48 properties we analysed carry some level of mapped flood risk. Published flood models are held over parts of Grays Gate; the free check on the Flood Model Report page says whether one reaches a given address.
Is Grays Gate bushfire-prone?
Around 19% of Grays Gate is mapped as bushfire-prone, compared with a Toowoomba Regional average of 36%.
Is Grays Gate under a flight path?
Aircraft were observed below 3,000 ft over about 8% of Grays Gate, and over about 39% at any altitude up to 10,000 ft, in the period sampled (4 Sep 2026 to 7 Nov 2026). The lowest measured aircraft was at 2,000 ft, with an average of 5,000 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 Grays Gate?
The dominant planning zone in Grays Gate is Rural, though the suburb also includes Unzoned.
Does Grays Gate have heritage-listed places?
No heritage-listed places are on record within Grays Gate.
Is Grays Gate hilly or flat?
Grays Gate is largely flat: the median ground slope is about 2%. Ground level runs from roughly 419 m to 468 m AHD across the suburb.
What is the typical lot size in Grays Gate?
Across 38 surveyed parcels in Grays Gate, the median lot size is about 644,204 m². There are also 7 registered easements mapped in the suburb.
Is Grays Gate an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Grays Gate scores 1005 and sits in decile 7 of 10 nationally and decile 8 within Queensland (decile 1 is the most disadvantaged tenth, decile 10 the least).
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Lavelle | 4.9 km | 10% | 4% |
| Rocky Creek | 5.1 km | 23% | 20% |
| Domville | 5.2 km | 38% | 28% |
| Mount Emlyn | 7.8 km | <1% | 33% |
| Punchs Creek | 8.6 km | 59% | 19% |
| Clontarf | 9.0 km | 16% | 31% |
| Millmerran | 11.8 km | 45% | 17% |
| Millwood | 12.7 km | 0% | 11% |
| Kooroongarra | 14.3 km | <1% | 56% |
| Yandilla | 15.1 km | 89% | 8% |