South Johnstone flood map & planning overlays
A planning-constraint profile of South Johnstone
(Cassowary Coast Regional, QLD) - 4.0 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 12 September 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
4.0 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to South Johnstone's boundary, with the flood, bushfire and environmental overlays drawn on top.
Nearby suburbs, nearest first
South Johnstone at a glance
Schools in and near South Johnstone
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
2 schools 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: 6.36 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 South Johnstone is zoned
Selling in South Johnstone? 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 4.0 km², South Johnstone is highly constrained by planning overlays. About 73% of the suburb sits within a mapped flood overlay. There are 2 heritage-listed sites on record, and the dominant land-use zone is Rural. The median lot measures about 1,013 m² across 273 parcels.
Who lives in South Johnstone
Census 2021 figures published by the ABS for the South Johnstone 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 870, and decile 2 within Queensland. The national average is 1000.
Age profile
Share of South Johnstone's 456 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Johnstone, the wider ABS statistical area containing South Johnstone. There is no annual population series published at suburb level, so this describes the surrounding area rather than South Johnstone itself.
8,075 in 2001 to 8,281 in 2025, up 3%.
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.
South Johnstone 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 |
Profile last materially updated 12 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 South Johnstone 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 South Johnstone. The free check tells you whether one reaches an address; where it does, a Flood Model Report is +$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 South Johnstone lot.
See what's in the $9 report →South Johnstone planning - frequently asked
Is South Johnstone flood-prone?
About 73% of South Johnstone falls within a mapped flood overlay, against the council-wide suburb average of 66%.
Is South Johnstone bushfire-prone?
Bushfire mapping covers South Johnstone and little to none of it is mapped as bushfire-prone (the Cassowary Coast Regional average is 16%).
What is the zoning in South Johnstone?
The dominant planning zone in South Johnstone is Rural, though the suburb also includes Township and Environmental management and conservation.
Does South Johnstone have heritage-listed places?
South Johnstone has 2 heritage-listed places on record.
What is the typical lot size in South Johnstone?
Across 273 surveyed parcels in South Johnstone, the median lot size is about 1,013 m². There are also 36 registered easements mapped in the suburb.
What is the population of South Johnstone?
At the 2021 Census South Johnstone had 456 usual residents, with a median age of 44 and an average household size of 2.3 people. The wider Johnstone statistical area, which contains South Johnstone, went from 8,075 people in 2001 to 8,281 in 2025, up 3%.
Is South Johnstone an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), South Johnstone scores 870 and sits in decile 1 of 10 nationally and decile 2 within Queensland (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in South Johnstone?
Median household income in South Johnstone was $1,125 a week at the 2021 Census, against $1,319 for the typical suburb in Cassowary Coast Regional. Median rent was $240 a week and the median mortgage repayment $867 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Boogan | 2.5 km | 96% | 4% |
| Currajah | 2.5 km | 42% | 0% |
| Wangan | 3.1 km | 76% | 0% |
| No. 6 Branch | 4.0 km | 46% | 4% |
| Stockton | 4.0 km | 100% | 0% |
| Camp Creek | 4.6 km | 51% | 1% |
| Martyville | 5.3 km | 100% | 27% |
| Bamboo Creek | 5.3 km | 57% | 2% |
| Mundoo | 5.3 km | 89% | 2% |
| Germantown | 5.6 km | 44% | 0% |