Castle Hill flood map & planning overlays
Castle Hill: Townsville's best-paid, priciest and most landslide-mapped suburb.
Things you won't regret: spending $9 to know the lot before you commit.
Free map preview, then PDF reports from $9 - about the price of an iced latte on a public holiday.
A planning-constraint profile of Castle Hill
(Townsville City, QLD) - 2.33 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 7 November 2026.
Constraint readout
2.33 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Castle Hill'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 Castle Hill properties?
Counts of properties, not share of land, across 488 analysed Castle Hill properties; no individual property result is identified.
Lot-level readout
Flood-risk rating across all 488 properties
From LayeredGeo's lot-risk engine: council flood overlays, historical flooding and terrain, resolved to each individual lot in Castle Hill.
Aircraft noise and flight paths over Castle Hill
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 2 a day
Night movements: observed, lowest 1,000 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.
Castle Hill at a glance
Schools in and near Castle Hill
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
0 schools providing primary years and 0 providing secondary years. A combined school may be counted in both teaching levels.
Nearest school availability
Primary: 0.13 km from the suburb boundary
Secondary: 0.33 km from the suburb boundary
Source: Queensland Government school geographic information. Catchment boundaries can divide a suburb and change over time.
Which school zone is a Castle Hill address in? Check an address with our free school zone checker.
How Castle Hill is zoned
Selling in Castle Hill? 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 2.33 km², Castle Hill is highly constrained by planning overlays. Flood mapping covers the suburb and none of it falls within a mapped flood overlay, and 86% is flagged bushfire-prone. There are 5 heritage-listed sites on record, and the dominant land-use zone is Open Space. The terrain is steep, and the median lot measures about 793 m² across 527 parcels.
Recent development applications in Castle Hill
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: 14 August 2026.
Previous 12 months: 28 (54% lower in the latest period).
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 8 November 2026. Check the official council register.
Who lives in Castle Hill
Census 2021 figures published by the ABS for the Castle Hill 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 1164, and decile 10 within Queensland. The national average is 1000.
Age profile
Share of Castle Hill's 972 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Townsville City - North Ward, the wider ABS statistical area containing Castle Hill. There is no annual population series published at suburb level, so this describes the surrounding area rather than Castle Hill itself.
7,001 in 2001 to 9,589 in 2025, up 37%.
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.
Castle Hill 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 |
| Development applications | Available as suburb totals | Townsville City Council |
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 Castle Hill 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 88% of Castle Hill. 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 Castle Hill. 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 Castle Hill lot.
Castle Hill planning - frequently asked
Is Castle Hill flood-prone?
Flood mapping covers Castle Hill and less than 1% of the suburb falls within a mapped flood overlay (the council-wide suburb average is 57%). Across the suburb, 0% of the 488 properties we analysed carry some level of mapped flood risk. Published flood models are held over parts of Castle Hill; the free check on the Flood Model Report page says whether one reaches a given address.
Is Castle Hill bushfire-prone?
Around 86% of Castle Hill is mapped as bushfire-prone, compared with a Townsville City average of 50%.
Is Castle Hill under a flight path?
Aircraft were observed below 3,000 ft over about 88% of Castle Hill, and over about 100% 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 500 ft, with an average of 1,500 ft. At the busiest point in the suburb about 3 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 Castle Hill?
The dominant planning zone in Castle Hill is Open Space, though the suburb also includes Low Density Residential and Community Facilities.
Does Castle Hill have heritage-listed places?
Castle Hill has 5 heritage-listed places on record.
Is Castle Hill hilly or flat?
Castle Hill is steep: the median ground slope is about 27%, and 92% of measured points sit on grades of 15% or steeper. Ground level runs from roughly 10 m to 113 m AHD across the suburb.
What is the typical lot size in Castle Hill?
Across 527 surveyed parcels in Castle Hill, the median lot size is about 793 m². There are also 145 registered easements mapped in the suburb.
Does Castle Hill have a train station?
There is no train station inside Castle Hill itself. The suburb is served by 1 bus stop.
What is the population of Castle Hill?
At the 2021 Census Castle Hill had 972 usual residents, with a median age of 46 and an average household size of 2.7 people. The wider Townsville City - North Ward statistical area, which contains Castle Hill, went from 7,001 people in 2001 to 9,589 in 2025, up 37%.
Is Castle Hill an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Castle Hill scores 1164 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 Castle Hill?
Median household income in Castle Hill was $3,781 a week at the 2021 Census, against $1,510 for the typical suburb in Townsville City. Median rent was $570 a week and the median mortgage repayment $2,817 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Belgian Gardens | 0.9 km | 69% | 15% |
| West End | 1.1 km | 75% | 17% |
| North Ward | 1.5 km | 71% | 11% |
| Townsville City | 2.0 km | 69% | 7% |
| Rowes Bay | 2.0 km | 100% | 36% |
| Hyde Park | 2.6 km | 100% | 0% |
| Garbutt | 2.7 km | 100% | 5% |
| Currajong | 3.0 km | 100% | 0% |
| Pimlico | 3.0 km | 100% | 13% |
| Hermit Park | 3.4 km | 100% | 0% |