St Lucia flood map & planning overlays
A planning-constraint profile of St Lucia (Brisbane City, QLD) - 4.62 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
4.62 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to St Lucia'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.
St Lucia 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 5,816 St Lucia properties.
Lot-level readout
Flood-risk rating across all 5,816 properties
From LayeredGeo's lot-risk engine: council flood overlays, historical flooding and terrain, resolved to each individual lot in St Lucia.
St Lucia at a glance
How St Lucia is zoned
Selling in St Lucia? 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 4.62 km², St Lucia is highly constrained by planning overlays. About 66% of the suburb sits within a mapped flood overlay, and 13% is flagged bushfire-prone. There are 22 heritage-listed sites on record, and the dominant land-use zone is Specialised centre (Major education and research facility). The terrain is hilly, and the median lot measures about 417 m² across 3,595 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 St Lucia
Census 2021 figures published by the ABS for the St Lucia 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 1091, and decile 10 within Queensland. The national average is 1000.
Age profile
Share of St Lucia's 12,220 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of St Lucia, the wider ABS statistical area containing St Lucia. There is no annual population series published at suburb level, so this describes the surrounding area rather than St Lucia itself.
9,995 in 2001 to 15,447 in 2025, up 55%.
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 St Lucia 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 →St Lucia planning - frequently asked
Where can I see a flood map of St Lucia?
The schematic on this page is a St Lucia flood map: the mapped flood overlays drawn over the suburb's terrain and street grid, covering about 66% of the suburb. Flood lines vary block to block, so for a specific property use the free interactive map - search any St Lucia address and it shows the flood, zoning and bushfire mapping on the exact lot boundary.
Is St Lucia flood-prone?
About 66% of St Lucia falls within a mapped flood overlay, against a Brisbane City average of 40%. Looking lot by lot, 18% of the 5,816 properties we analysed in St Lucia carry some level of mapped flood risk, including 67 rated high risk or historically affected. Flood overlays vary block to block, so whether a particular lot is affected needs a property-level check.
Is St Lucia bushfire-prone?
Yes - around 13% of St Lucia is mapped as bushfire-prone, compared with a Brisbane City average of 27%. A bushfire-prone designation can trigger additional building requirements, so check the specific address.
What is the zoning in St Lucia?
The dominant planning zone in St Lucia is Specialised centre (Major education and research facility), though the suburb also includes Low density residential and Low-medium density residential (2 or 3 storey mix). Zoning sets what you can build and do on a site, and can differ lot by lot.
Does St Lucia have heritage-listed places?
St Lucia has 22 heritage-listed places on record. Heritage listing affects what you can alter or demolish, so confirm whether a specific property is listed or near a heritage place.
Is St Lucia hilly or flat?
St Lucia is hilly: the median lot slope is about 12%, and 34% of properties sit on slopes of 15% or steeper. Ground level runs from roughly 4 m to 44 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 St Lucia?
Across 3,595 surveyed parcels in St Lucia, the median lot size is about 417 m². There are also 403 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.
Does St Lucia have a train station?
There is no train station inside St Lucia itself. The suburb is served by 54 bus stops and 2 ferry terminals.
What is the population of St Lucia?
At the 2021 Census St Lucia had 12,220 usual residents, with a median age of 25 and an average household size of 2.4 people. The wider St Lucia statistical area, which contains St Lucia, went from 9,995 people in 2001 to 15,447 in 2025, up 55%. ABS publishes no annual population series for individual suburbs, so that trend describes the surrounding area rather than St Lucia alone.
Is St Lucia an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), St Lucia scores 1091 and sits in decile 10 of 10 nationally and decile 10 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 St Lucia?
Median household income in St Lucia was $1,761 a week at the 2021 Census, against $2,122 for the typical suburb in Brisbane City. Median rent was $410 a week and the median mortgage repayment $2,000 a month. These are 2021 Census figures and have not been indexed to today.
Do I need a planning report for a St Lucia property?
A St Lucia 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.