Thornville flood map & planning overlays
A planning-constraint profile of Thornville (Toowoomba Regional, QLD) - 44.83 km², mapped from live council and state overlay data. This suburb is highly constrained.
Everything below is suburb-wide. Overlays change block to block - see which ones actually touch your lot. The map is free.
Constraint readout
44.83 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Thornville's boundary, with the flood, bushfire and environmental overlays drawn on top. It shows where constraints fall; the interactive map shows them on your exact address.
Thornville flood risk at the property level
Overlay percentages say how much land is constrained; these figures say how many properties are actually touched, from our lot-by-lot analysis of 77 Thornville properties.
Lot-level readout
Flood-risk rating across all 77 properties
From LayeredGeo's lot-risk engine: council flood overlays, historical flooding and terrain, resolved to each individual lot in Thornville.
Thornville at a glance
How Thornville is zoned
Selling in Thornville? 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 44.83 km², Thornville is highly constrained by planning overlays. Flood mapping covers the suburb and none of it falls within a mapped flood overlay, and 47% is flagged bushfire-prone. The dominant land-use zone is Rural. The terrain is gently undulating, and the median lot measures about 614,992 m² across 79 parcels. These figures are suburb-wide - the overlays that actually apply to a given lot can differ block to block, which is what a property-level check tells you.
Who lives in Thornville
Census 2021 figures published by the ABS for the Thornville 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 996, and decile 7 within Queensland. The national average is 1000.
Population trend, 2001 to 2025
Estimated resident population of Crows Nest - Rosalie, the wider ABS statistical area containing Thornville. There is no annual population series published at suburb level, so this describes the surrounding area rather than Thornville itself.
7,766 in 2001 to 9,824 in 2025, up 27%.
Source: Australian Bureau of Statistics. Census of Population and Housing 2021 (General Community Profile) and SEIFA 2021, both published at the Suburbs and Localities level; Regional Population (estimated resident population) at Statistical Area Level 2. Used under CC BY 4.0. Census counts of small populations are randomly adjusted by the ABS to protect confidentiality, so figures for small suburbs are indicative.
Check a specific Thornville 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 →Thornville planning - frequently asked
Where can I see a flood map of Thornville?
The schematic on this page is a Thornville flood map: the mapped flood overlays drawn over the suburb's terrain and street grid. Flood lines vary block to block, so for a specific property use the free interactive map - search any Thornville address and it shows the flood, zoning and bushfire mapping on the exact lot boundary.
Is Thornville flood-prone?
Flood mapping covers Thornville and none of the suburb falls within a mapped flood overlay (the Toowoomba Regional average is 13%). Looking lot by lot, 0% of the 77 properties we analysed in Thornville carry some level of mapped flood risk. Flood overlays vary block to block, so whether a particular lot is affected needs a property-level check.
Is Thornville bushfire-prone?
Yes - around 47% of Thornville is mapped as bushfire-prone, compared with a Toowoomba Regional average of 20%. A bushfire-prone designation can trigger additional building requirements, so check the specific address.
What is the zoning in Thornville?
The dominant planning zone in Thornville is Rural. Zoning sets what you can build and do on a site, and can differ lot by lot.
Does Thornville have heritage-listed places?
No heritage-listed places are on record within Thornville. Even so, it is worth confirming for an individual property before any works.
Is Thornville hilly or flat?
Thornville is gently undulating: the median lot slope is about 8%, and 9% of properties sit on slopes of 15% or steeper. Ground level runs from roughly 435 m to 656 m AHD across the suburb. Slope drives site costs - cut and fill, retaining walls and driveway grades - so it is worth knowing before you commit to a sloping block.
What is the typical lot size in Thornville?
Across 79 surveyed parcels in Thornville, the median lot size is about 614,992 m².
Is Thornville an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Thornville scores 996 and sits in decile 6 of 10 nationally and decile 7 within Queensland - decile 1 being the most disadvantaged tenth of Australian suburbs and decile 10 the least. The national average score is 1000. SEIFA summarises income, education, occupation and housing across the whole suburb, so it describes the area, not any particular household in it.
Do I need a planning report for a Thornville property?
A Thornville planning report pulls every overlay - zoning, flood, bushfire, heritage and environmental - that touches a single lot, on live council and state data. The interactive map preview is free; a full PDF report is $9.