Diglum flood map & planning overlays
A planning-constraint profile of Diglum
(Gladstone Regional, QLD) - 375.94 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
375.94 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Diglum's boundary, with the flood, bushfire and environmental overlays drawn on top.
Nearby suburbs, nearest first
Diglum at a glance
Schools in and near Diglum
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
0 schools providing primary years and 0 providing secondary years. A combined school may be counted in both teaching levels.
Nearest school availability
Primary: 12.48 km from the suburb boundary
Secondary: 15.22 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 Diglum is zoned
Selling in Diglum? 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 375.94 km², Diglum is highly constrained by planning overlays. About 32% of the suburb sits within a mapped flood overlay, and 89% is flagged bushfire-prone. The dominant land-use zone is Rural. The median lot measures about 981,204 m² across 203 parcels.
Who lives in Diglum
Census 2021 figures published by the ABS for the Diglum 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 914, and decile 3 within Queensland. The national average is 1000.
Age profile
Share of Diglum's 56 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Gladstone Hinterland, the wider ABS statistical area containing Diglum. There is no annual population series published at suburb level, so this describes the surrounding area rather than Diglum itself.
6,952 in 2001 to 12,274 in 2025, up 77%.
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.
Diglum 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 Diglum 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.
Building or pricing a slab? The $119 geotechnical desktop report covers geology, soils, bores and an indicative AS 2870 site class for a Diglum lot.
See what's in the $9 report →Diglum planning - frequently asked
Is Diglum flood-prone?
About 32% of Diglum falls within a mapped flood overlay, against the council-wide suburb average of 48%.
Is Diglum bushfire-prone?
Around 89% of Diglum is mapped as bushfire-prone, compared with a Gladstone Regional average of 64%.
What is the zoning in Diglum?
The dominant planning zone in Diglum is Rural, though the suburb also includes Conservation and Special Purpose.
Does Diglum have heritage-listed places?
No heritage-listed places are on record within Diglum.
What is the typical lot size in Diglum?
Across 203 surveyed parcels in Diglum, the median lot size is about 981,204 m². There are also 5 registered easements mapped in the suburb.
What is the population of Diglum?
At the 2021 Census Diglum had 56 usual residents, with a median age of 45 and an average household size of 3.1 people. The wider Gladstone Hinterland statistical area, which contains Diglum, went from 6,952 people in 2001 to 12,274 in 2025, up 77%.
Is Diglum an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Diglum scores 914 and sits in decile 2 of 10 nationally and decile 3 within Queensland (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Diglum?
Median household income in Diglum was $1,833 a week at the 2021 Census, against $1,361 for the typical suburb in Gladstone Regional. Median rent was $300 a week and the median mortgage repayment $4,333 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Wooderson | 16.6 km | 37% | 80% |
| Tablelands | 21.3 km | 21% | 98% |
| Boynedale | 21.5 km | 36% | 86% |
| Taragoola | 22.4 km | 49% | 66% |
| Calliope | 24.4 km | 41% | 73% |
| Mount Alma | 25.7 km | 50% | 53% |
| River Ranch | 31.1 km | 82% | 84% |
| Benaraby | 32.5 km | 57% | 76% |
| Boyne Valley | 33.1 km | 34% | 92% |
| Iveragh | 35.0 km | 32% | 87% |