Idalia flood map & planning overlays
A planning-constraint profile of Idalia
(Townsville City, QLD) - 3.47 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 19 September 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
3.47 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Idalia's boundary, with the flood, bushfire and environmental overlays drawn on top.
Nearby suburbs, nearest first
How common is mapped flood risk across Idalia properties?
Overlay percentages say how much land is constrained; these figures say how many properties are actually touched in a suburb-wide analysis of 1,899 Idalia properties. No individual property result is identified on this page.
Lot-level readout
Flood-risk rating across all 1,899 properties
From LayeredGeo's lot-risk engine: council flood overlays, historical flooding and terrain, resolved to each individual lot in Idalia.
Idalia at a glance
Schools in and near Idalia
Public school-location data shows availability across the suburb. These figures do not rate schools and do not assign a particular address to a catchment.
Inside the suburb boundary
1 school providing primary years and 0 providing secondary years. A combined school may be counted in both teaching levels.
Nearest school availability
Primary: inside the suburb
Secondary: 0.28 km from the suburb boundary
Source: Queensland Government school geographic information. Catchment boundaries can divide a suburb and change over time; use the official catchment finder for a specific address.
How Idalia is zoned
Selling in Idalia? 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 3.47 km², Idalia is highly constrained by planning overlays. About 100% of the suburb sits within a mapped flood overlay. There is 1 heritage-listed site on record, and the dominant land-use zone is Low Density Residential. The terrain is largely flat, and the median lot measures about 710 m² across 1,902 parcels.
Recent development applications in Idalia
Applications are counted across the whole gazetted suburb from the public Townsville City Council register. No application address or individual property is published here.
Submitted in the past 12 months
Latest included submission: 7 September 2026.
Previous 12 months: 59 (2% higher in the latest period).
Common application types
- Material change of use: 12
Counts depend on applications that the council publishes and that can be assigned to a suburb. Categories can overlap when one application covers several types. Totals below five and their latest dates are suppressed. Register last synchronised 20 September 2026. Check the official council register.
Who lives in Idalia
Census 2021 figures published by the ABS for the Idalia 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 1081, and decile 10 within Queensland. The national average is 1000.
Age profile
Share of Idalia's 4,563 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Oonoonba, the wider ABS statistical area containing Idalia. There is no annual population series published at suburb level, so this describes the surrounding area rather than Idalia itself.
1,937 in 2001 to 7,544 in 2025, up 289%.
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.
Idalia 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 |
| Demographics | Available | Australian Bureau of Statistics (2021 Census and SEIFA) |
| School availability | Available | Queensland Government |
| Development applications | Available as suburb totals | Townsville City Council |
Profile last materially updated 19 September 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 Idalia 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.
Published flood models are held over parts of Idalia. 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 (+$9 with the planning report).
Building or pricing a slab? The $119 geotechnical desktop report covers geology, soils, bores and an indicative AS 2870 site class for a Idalia lot.
See what's in the $9 report →Idalia planning - frequently asked
Is Idalia flood-prone?
About 100% of Idalia falls within a mapped flood overlay, against the council-wide suburb average of 39%. Across the suburb, 0% of the 1,899 properties we analysed carry some level of mapped flood risk.
Is Idalia bushfire-prone?
Bushfire mapping covers Idalia and little to none of it is mapped as bushfire-prone (the Townsville City average is 50%).
What is the zoning in Idalia?
The dominant planning zone in Idalia is Low Density Residential, though the suburb also includes Open Space and District Centre.
Does Idalia have heritage-listed places?
Idalia has 1 heritage-listed place on record.
Is Idalia hilly or flat?
Idalia is largely flat: the median ground slope is about 1%. Ground level runs from roughly 4 m to 6 m AHD across the suburb.
What is the typical lot size in Idalia?
Across 1,902 surveyed parcels in Idalia, the median lot size is about 710 m². There are also 121 registered easements mapped in the suburb.
Does Idalia have a train station?
There is no train station inside Idalia itself. The suburb is served by 8 bus stops.
What is the population of Idalia?
At the 2021 Census Idalia had 4,563 usual residents, with a median age of 32 and an average household size of 2.7 people. The wider Oonoonba statistical area, which contains Idalia, went from 1,937 people in 2001 to 7,544 in 2025, up 289%.
Is Idalia an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Idalia scores 1081 and sits in decile 10 of 10 nationally and decile 10 within Queensland (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Idalia?
Median household income in Idalia was $2,524 a week at the 2021 Census, against $1,510 for the typical suburb in Townsville City. Median rent was $400 a week and the median mortgage repayment $1,920 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Rosslea | 1.4 km | 100% | <1% |
| Oonoonba | 1.4 km | 100% | 0% |
| Cluden | 2.3 km | 100% | 12% |
| Hermit Park | 2.5 km | 100% | 0% |
| Wulguru | 2.5 km | 18% | 32% |
| Mysterton | 2.7 km | 100% | 1% |
| Mundingburra | 2.8 km | 100% | 18% |
| Annandale | 2.9 km | 72% | 15% |
| Railway Estate | 3.3 km | 100% | 0% |
| Hyde Park | 3.5 km | 100% | 0% |