Harlin flood map & planning overlays
A planning-constraint profile of Harlin (Somerset Regional, QLD) - 255.68 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
255.68 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Harlin'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.
Harlin at a glance
How Harlin is zoned
Selling in Harlin? 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 255.68 km², Harlin is highly constrained by planning overlays. About 11% of the suburb sits within a mapped flood overlay, and 50% is flagged bushfire-prone. There is 1 heritage-listed site on record, and the dominant land-use zone is Rural. The median lot measures about 171,840 m² across 510 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 Harlin
Census 2021 figures published by the ABS for the Harlin 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 950, and decile 4 within Queensland. The national average is 1000.
Age profile
Share of Harlin's 211 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Kilcoy, the wider ABS statistical area containing Harlin. There is no annual population series published at suburb level, so this describes the surrounding area rather than Harlin itself.
4,029 in 2001 to 6,216 in 2025, up 54%.
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 Harlin 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 →Harlin planning - frequently asked
Where can I see a flood map of Harlin?
The schematic on this page is a Harlin flood map: the mapped flood overlays drawn over the suburb's terrain and street grid, covering about 11% of the suburb. Flood lines vary block to block, so for a specific property use the free interactive map - search any Harlin address and it shows the flood, zoning and bushfire mapping on the exact lot boundary.
Is Harlin flood-prone?
About 11% of Harlin falls within a mapped flood overlay, against a Somerset Regional average of 25%. Flood overlays vary block to block, so whether a particular lot is affected needs a property-level check.
Is Harlin bushfire-prone?
Yes - around 50% of Harlin 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 Harlin?
The dominant planning zone in Harlin is Rural. Zoning sets what you can build and do on a site, and can differ lot by lot.
Does Harlin have heritage-listed places?
Harlin has 1 heritage-listed place on record. Heritage listing affects what you can alter or demolish, so confirm whether a specific property is listed or near a heritage place.
What is the typical lot size in Harlin?
Across 510 surveyed parcels in Harlin, the median lot size is about 171,840 m². There are also 57 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 Harlin?
At the 2021 Census Harlin had 211 usual residents, with a median age of 48 and an average household size of 2.5 people. The wider Kilcoy statistical area, which contains Harlin, went from 4,029 people in 2001 to 6,216 in 2025, up 54%. ABS publishes no annual population series for individual suburbs, so that trend describes the surrounding area rather than Harlin alone.
Is Harlin an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Harlin scores 950 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 Harlin?
Median household income in Harlin was $1,125 a week at the 2021 Census, against $1,312 for the typical suburb in Somerset Regional. Median rent was $240 a week and the median mortgage repayment $1,300 a month. These are 2021 Census figures and have not been indexed to today.
Do I need a planning report for a Harlin property?
A Harlin 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.