Cecil Plains flood map & planning overlays
Cecil Plains holds 7 heritage places.
Most lots here are flood-mapped. The free check shows how much of one lot the overlay covers.
Free map preview, then PDF reports from $9 - about the price of an iced latte on a public holiday.
A planning-constraint profile of Cecil Plains
(Toowoomba Regional, QLD) - 362.19 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 7 November 2026.
Constraint readout
362.19 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Cecil 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
How common is mapped flood risk across Cecil Plains properties?
Counts of properties, not share of land, across 438 analysed Cecil Plains properties; no individual property result is identified.
Lot-level readout
Flood-risk rating across all 438 properties
From LayeredGeo's lot-risk engine: council flood overlays, historical flooding and terrain, resolved to each individual lot in Cecil Plains.
Aircraft noise and flight paths over Cecil Plains
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
typical observed square 0 a day
Night movements: observed, lowest 8,000 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.
Cecil Plains at a glance
Schools in and near Cecil Plains
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
1 school providing primary years and 1 providing secondary years. A combined school may be counted in both teaching levels.
Nearest school availability
Primary: inside the suburb
Secondary: inside the suburb
Source: Queensland Government school geographic information. Catchment boundaries can divide a suburb and change over time.
Which school zone is a Cecil Plains address in? Check an address with our free school zone checker.
How Cecil Plains is zoned
Selling in Cecil Plains? 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 362.19 km², Cecil Plains is highly constrained by planning overlays. About 63% of the suburb sits within a mapped flood overlay, and 36% is flagged bushfire-prone. There are 7 heritage-listed sites on record, and the dominant land-use zone is Rural. The terrain is largely flat, and the median lot measures about 9,995 m² across 396 parcels.
Who lives in Cecil Plains
Census 2021 figures published by the ABS for the Cecil 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 902, and decile 2 within Queensland. The national average is 1000.
Age profile
Share of Cecil Plains's 380 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Millmerran, the wider ABS statistical area containing Cecil Plains. There is no annual population series published at suburb level, so this describes the surrounding area rather than Cecil Plains 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.
Cecil 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 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 Cecil 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.
See what's in the $9 report →Aircraft have been seen below 3,000 ft over about 27% of Cecil Plains. 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 Cecil Plains. 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 Cecil Plains lot.
Cecil Plains planning - frequently asked
Is Cecil Plains flood-prone?
About 63% of Cecil Plains falls within a mapped flood overlay, against the council-wide suburb average of 27%. Across the suburb, 38% of the 438 properties we analysed carry some level of mapped flood risk, including 135 rated high risk or historically affected. Published flood models are held over parts of Cecil Plains; the free check on the Flood Model Report page says whether one reaches a given address.
Is Cecil Plains bushfire-prone?
Around 36% of Cecil Plains is mapped as bushfire-prone, compared with a Toowoomba Regional average of 36%.
Is Cecil Plains under a flight path?
Aircraft were observed below 3,000 ft over about 27% of Cecil Plains, and over about 70% 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 1,000 ft, with an average of 4,000 ft. At the busiest point in the suburb about 6 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 Cecil Plains?
The dominant planning zone in Cecil Plains is Rural, though the suburb also includes Open Space and Township.
Does Cecil Plains have heritage-listed places?
Cecil Plains has 7 heritage-listed places on record.
Is Cecil Plains hilly or flat?
Cecil Plains is largely flat: the median ground slope is about 1%. Ground level runs from roughly 348 m to 391 m AHD across the suburb.
What is the typical lot size in Cecil Plains?
Across 396 surveyed parcels in Cecil Plains, the median lot size is about 9,995 m². There are also 19 registered easements mapped in the suburb.
What is the population of Cecil Plains?
At the 2021 Census Cecil Plains had 380 usual residents, with a median age of 47 and an average household size of 2.2 people. The wider Millmerran statistical area, which contains Cecil Plains, went from 3,413 people in 2001 to 3,351 in 2025, down 2%.
Is Cecil Plains an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Cecil Plains scores 902 and sits in decile 2 of 10 nationally and decile 2 within Queensland (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Cecil Plains?
Median household income in Cecil Plains was $1,281 a week at the 2021 Census, against $1,583 for the typical suburb in Toowoomba Regional. Median rent was $200 a week and the median mortgage repayment $975 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Grassdale | 10.4 km | 69% | 20% |
| Tipton | 11.8 km | 100% | 10% |
| Nangwee | 14.3 km | 99% | 2% |
| Springvale Western Downs Regional |
16.7 km | 98% | 5% |
| Halliford Western Downs Regional |
20.2 km | 41% | 97% |
| Norwin | 21.3 km | 88% | 0% |
| St Ruth | 22.5 km | 97% | 0% |
| Condamine Plains | 22.7 km | 98% | 6% |
| Branchview | 22.7 km | 85% | 1% |
| Kurrowah | 23.5 km | 50% | 64% |