Mount Hallen flood map & planning overlays
A planning-constraint profile of Mount Hallen (Somerset Regional, QLD) - 52.45 km², mapped from live council and state overlay data. This suburb is highly constrained.
Everything below is suburb-wide. Overlays change block to block - see which ones actually touch your lot. The map is free.
Constraint readout
52.45 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Mount Hallen's boundary, with the flood, bushfire and environmental overlays drawn on top. It shows where constraints fall; the interactive map shows them on your exact address.
Mount Hallen at a glance
Across its 52.45 km², Mount Hallen 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. The median lot measures about 41,516 m² across 314 parcels. These figures are suburb-wide - the overlays that actually apply to a given lot can differ block to block, which is what a property-level check tells you.
Who lives in Mount Hallen
Census 2021 figures published by the ABS for the Mount Hallen 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 945, and decile 4 within Queensland. The national average is 1000.
Age profile
Share of Mount Hallen's 457 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Esk, the wider ABS statistical area containing Mount Hallen. There is no annual population series published at suburb level, so this describes the surrounding area rather than Mount Hallen itself.
4,299 in 2001 to 5,236 in 2025, up 22%.
Source: Australian Bureau of Statistics. Census of Population and Housing 2021 (General Community Profile) and SEIFA 2021, both published at the Suburbs and Localities level; Regional Population (estimated resident population) at Statistical Area Level 2. Used under CC BY 4.0. Census counts of small populations are randomly adjusted by the ABS to protect confidentiality, so figures for small suburbs are indicative.
Check a specific Mount Hallen 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 →Mount Hallen planning - frequently asked
Where can I see a flood map of Mount Hallen?
The schematic on this page is a Mount Hallen flood map: the mapped flood overlays drawn over the suburb's terrain and street grid. Flood lines vary block to block, so for a specific property use the free interactive map - search any Mount Hallen address and it shows the flood, zoning and bushfire mapping on the exact lot boundary.
Is Mount Hallen flood-prone?
Flood mapping covers Mount Hallen and none of the suburb falls within a mapped flood overlay (the Somerset Regional average is 25%). Flood overlays vary block to block, so whether a particular lot is affected needs a property-level check.
Is Mount Hallen bushfire-prone?
Yes - around 86% of Mount Hallen is mapped as bushfire-prone, compared with a Somerset Regional average of 54%. A bushfire-prone designation can trigger additional building requirements, so check the specific address.
What is the zoning in Mount Hallen?
Mount Hallen contains a mix of planning zones. Zoning sets what you can build and do on a site, and can differ lot by lot - check the exact address.
Does Mount Hallen have heritage-listed places?
No heritage-listed places are on record within Mount Hallen. Even so, it is worth confirming for an individual property before any works.
What is the typical lot size in Mount Hallen?
Across 314 surveyed parcels in Mount Hallen, the median lot size is about 41,516 m². There are also 103 registered easements mapped in the suburb - an easement can restrict where you can build, so always check the title and overlays for the specific lot.
What is the population of Mount Hallen?
At the 2021 Census Mount Hallen had 457 usual residents, with a median age of 50 and an average household size of 2.6 people. The wider Esk statistical area, which contains Mount Hallen, went from 4,299 people in 2001 to 5,236 in 2025, up 22%. ABS publishes no annual population series for individual suburbs, so that trend describes the surrounding area rather than Mount Hallen alone.
Is Mount Hallen an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Mount Hallen scores 945 and sits in decile 3 of 10 nationally and decile 4 within Queensland - decile 1 being the most disadvantaged tenth of Australian suburbs and decile 10 the least. The national average score is 1000. SEIFA summarises income, education, occupation and housing across the whole suburb, so it describes the area, not any particular household in it.
What is the median household income in Mount Hallen?
Median household income in Mount Hallen was $1,600 a week at the 2021 Census, against $1,312 for the typical suburb in Somerset Regional. Median rent was $333 a week and the median mortgage repayment $1,560 a month. These are 2021 Census figures and have not been indexed to today.
Do I need a planning report for a Mount Hallen property?
A Mount Hallen planning report pulls every overlay - zoning, flood, bushfire, heritage and environmental - that touches a single lot, on live council and state data. The interactive map preview is free; a full PDF report is $9.