Thornton flood map & planning overlays
A planning-constraint profile of Thornton (Lockyer Valley Regional, QLD) - 95.41 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
95.41 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Thornton'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.
Thornton at a glance
How Thornton is zoned
Selling in Thornton? 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 95.41 km², Thornton is highly constrained by planning overlays. About 6% of the suburb sits within a mapped flood overlay, and 80% is flagged bushfire-prone. The dominant land-use zone is Rural. The median lot measures about 209,584 m² across 234 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 Thornton
Census 2021 figures published by the ABS for the Thornton 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 992, and decile 7 within Queensland. The national average is 1000.
Age profile
Share of Thornton's 214 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Lockyer Valley - East, the wider ABS statistical area containing Thornton. There is no annual population series published at suburb level, so this describes the surrounding area rather than Thornton itself.
13,192 in 2001 to 24,138 in 2025, up 83%.
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 Thornton 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 →Thornton planning - frequently asked
Where can I see a flood map of Thornton?
The schematic on this page is a Thornton flood map: the mapped flood overlays drawn over the suburb's terrain and street grid, covering about 6% of the suburb. Flood lines vary block to block, so for a specific property use the free interactive map - search any Thornton address and it shows the flood, zoning and bushfire mapping on the exact lot boundary.
Is Thornton flood-prone?
About 6% of Thornton falls within a mapped flood overlay, against a Lockyer Valley Regional average of 20%. Flood overlays vary block to block, so whether a particular lot is affected needs a property-level check.
Is Thornton bushfire-prone?
Yes - around 80% of Thornton is mapped as bushfire-prone, compared with a Lockyer Valley Regional average of 63%. A bushfire-prone designation can trigger additional building requirements, so check the specific address.
What is the zoning in Thornton?
The dominant planning zone in Thornton is Rural, though the suburb also includes Conservation and Open Space. Zoning sets what you can build and do on a site, and can differ lot by lot.
Does Thornton have heritage-listed places?
No heritage-listed places are on record within Thornton. Even so, it is worth confirming for an individual property before any works.
What is the typical lot size in Thornton?
Across 234 surveyed parcels in Thornton, the median lot size is about 209,584 m². There are also 27 registered easements mapped in the suburb - an easement can restrict where you can build, so always check the title and overlays for the specific lot.
What is the population of Thornton?
At the 2021 Census Thornton had 214 usual residents, with a median age of 49 and an average household size of 2.4 people. The wider Lockyer Valley - East statistical area, which contains Thornton, went from 13,192 people in 2001 to 24,138 in 2025, up 83%. ABS publishes no annual population series for individual suburbs, so that trend describes the surrounding area rather than Thornton alone.
Is Thornton an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Thornton scores 992 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.
What is the median household income in Thornton?
Median household income in Thornton was $1,678 a week at the 2021 Census, against $1,521 for the typical suburb in Lockyer Valley Regional. Median rent was $210 a week and the median mortgage repayment $1,500 a month. These are 2021 Census figures and have not been indexed to today.
Do I need a planning report for a Thornton property?
A Thornton 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.