Crystal Brook flood map & planning overlays
A planning-constraint profile of Crystal Brook
(Port Pirie Regional Council, SA) - 190.67 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 26 September 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
190.67 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Crystal Brook'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
Aircraft noise and flight paths over Crystal Brook
Two different things, kept apart on purpose. The ANEF contour is the planning instrument - a forecast published per airport that planning schemes use to control noise-sensitive development. Observed overflight is what a sampled aircraft-tracking feed actually recorded over the suburb - where aircraft flew, how low and how often.
Observed overflight - sampled 4 Sep to 26 Sep 2026
Night movements: observed, lowest 6,000 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.
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.
Crystal Brook at a glance
How Crystal Brook is zoned
Selling in Crystal Brook? The zone and overlays on this page are the Planning and Design Code controls a Form 1 vendor's statement has to disclose.
Across its 190.67 km², Crystal Brook is highly constrained by planning overlays. Flood mapping covers the suburb and none of it falls within a mapped flood overlay, and 100% is flagged bushfire-prone. There are 19 heritage-listed sites on record, and the dominant land-use zone is Rural. The median lot measures about 1,927 m² across 1,662 parcels.
Who lives in Crystal Brook
Census 2021 figures published by the ABS for the Crystal Brook 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 928, and decile 3 within South Australia. The national average is 1000.
Age profile
Share of Crystal Brook's 1,537 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Port Pirie Surrounds, the wider ABS statistical area containing Crystal Brook. There is no annual population series published at suburb level, so this describes the surrounding area rather than Crystal Brook itself.
3,212 in 2001 to 3,433 in 2025, up 7%.
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.
Crystal Brook 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 South Australian Planning and Design Code and Location SA spatial data |
| Bushfire-prone mapping | Mapped | the South Australian Planning and Design Code and Location SA spatial data |
| Zoning | Mapped | the South Australian Planning and Design Code and Location SA spatial data |
| Heritage and environment | Mapped where published | the South Australian Planning and Design Code and Location SA spatial data |
| Aircraft noise contours (ANEF) | Not held | the South Australian Planning and Design Code and Location SA spatial data, Defence |
| Observed flight paths | Observed | adsb.lol, under the Open Database License |
| Demographics | Available | Australian Bureau of Statistics (2021 Census and SEIFA) |
Profile last materially updated 26 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 Crystal Brook 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.
The report's Aircraft Overflight page narrows that to the address itself: how many aircraft a day, how low, and at what heights.
Building or pricing a slab? The $119 geotechnical desktop report covers geology, soils, bores and an indicative AS 2870 site class for a Crystal Brook lot.
See what's in the $9 report →Crystal Brook planning - frequently asked
Is Crystal Brook flood-prone?
Flood mapping covers Crystal Brook and none of the suburb falls within a mapped flood overlay (the council-wide suburb average is 12%).
Is Crystal Brook bushfire-prone?
Around 100% of Crystal Brook is mapped as bushfire-prone, compared with a Port Pirie Regional Council average of 86%.
Is Crystal Brook under a flight path?
Aircraft were observed over about 4% of Crystal Brook in the period sampled, but only above 3,000 ft - the lowest measured was 4,000 ft. 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 Crystal Brook?
The dominant planning zone in Crystal Brook is Rural, though the suburb also includes Rural Living and Suburban Neighbourhood.
Does Crystal Brook have heritage-listed places?
Crystal Brook has 19 heritage-listed places on record.
What is the typical lot size in Crystal Brook?
Across 1,662 surveyed parcels in Crystal Brook, the median lot size is about 1,927 m².
Does Crystal Brook have a train station?
There is no train station inside Crystal Brook itself. The suburb is served by 2 bus stops.
What is the population of Crystal Brook?
At the 2021 Census Crystal Brook had 1,537 usual residents, with a median age of 49 and an average household size of 2.3 people. The wider Port Pirie Surrounds statistical area, which contains Crystal Brook, went from 3,212 people in 2001 to 3,433 in 2025, up 7%.
Is Crystal Brook an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Crystal Brook scores 928 and sits in decile 3 of 10 nationally and decile 3 within South Australia (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Crystal Brook?
Median household income in Crystal Brook was $1,011 a week at the 2021 Census, against $1,223 for the typical suburb in Port Pirie Regional Council. Median rent was $189 a week and the median mortgage repayment $975 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Merriton | 7.2 km | 0% | 100% |
| Huddleston Northern Areas Council |
10.0 km | 0% | 100% |
| Nurom | 11.6 km | 0% | 100% |
| Narridy Northern Areas Council |
11.7 km | 0% | 100% |
| Wandearah East | 13.9 km | 0% | 100% |
| Warnertown | 16.3 km | 0% | 100% |
| Redhill | 17.0 km | 0% | 100% |
| Clements Gap Barunga West Council |
18.8 km | 0% | 100% |
| Gladstone Northern Areas Council |
19.4 km | 0% | 100% |
| Georgetown Northern Areas Council |
20.1 km | 0% | 100% |