Harlin zoning & planning overlays
Harlin's 18 ha lots are 50.2% bushfire-mapped, home to a median age of 48.
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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 on the overlays we could measure - no flood mapping covers this suburb, so this is not a suburb-wide verdict.
Profile updated 7 November 2026.
Constraint readout
255.68 km² - this suburb is highly constrained on the overlays we could measure - no flood mapping covers this suburb, so this is not a suburb-wide verdict.
Elevation hillshade with street names, clipped to Harlin's boundary, with the bushfire and environmental overlays drawn on top. Magenta is where aircraft were observed in the sampled period, brightest below 3,000 ft. No flood layer is drawn because we hold no flood mapping for this area.
Nearby suburbs, nearest first
Aircraft noise and flight paths over Harlin
The ANEF contour is a published planning forecast and observed overflight is what a sampled tracking feed recorded - neither describes any individual property.
Observed overflight - sampled 4 Sep to 7 Nov 2026
typical observed square 0 a day
Night movements: observed, lowest 3,500 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.
How this is measured
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.
Harlin at a glance
Schools in and near Harlin
Public school-location data shows availability across the suburb; it does not rate schools or assign any individual address to a catchment.
Inside the suburb boundary
1 school 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: 7.74 km from the suburb boundary
Source: Queensland Government school geographic information. Catchment boundaries can divide a suburb and change over time.
Which school zone is a Harlin address in? Check an address with our free school zone checker.
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 the planning overlays we hold. We hold no flood mapping covering this suburb, so no flood figure is shown - that is a gap in our data, not an all-clear. Of what is mapped, 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 181,043 m² across 496 parcels.
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: ABS Census 2021 and SEIFA 2021 (Suburbs and Localities), Regional Population (SA2), CC BY 4.0. Small counts are randomly adjusted by the ABS.
Harlin data sources and coverage
“Not mapped” means we hold no source layer for this suburb - never an all-clear.
| Dataset | Coverage | Publisher |
|---|---|---|
| Flood mapping | Not 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 |
| Observed flight paths | Observed | adsb.lol, under the Open Database License |
| Demographics | Available | Australian Bureau of Statistics (2021 Census and SEIFA) |
| School availability | Available | Queensland Government |
Profile last materially updated 7 November 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 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 →The report's Aircraft Overflight page narrows that to the address itself: how many aircraft a day, how low, and at what heights.
Published flood models are held over parts of Harlin. 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 the indicative soil reactivity range to expect for a Harlin lot.
Harlin planning - frequently asked
Is Harlin flood-prone?
We don't yet hold flood mapping covering Harlin, so this page can't say how much of the suburb is flood-affected - that is a gap in our data, not an indication that the suburb is free of flood risk. Somerset Regional is the authority to check for flood mapping in this area. Published flood models are held over parts of Harlin; the free check on the Flood Model Report page says whether one reaches a given address.
Is Harlin bushfire-prone?
Around 50% of Harlin is mapped as bushfire-prone, compared with a Somerset Regional average of 54%.
Is Harlin under a flight path?
Aircraft were observed over about 71% of Harlin in the period sampled, but only above 3,000 ft - the lowest measured was 3,000 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 Harlin?
The dominant planning zone in Harlin is Rural, though the suburb also includes Township.
Does Harlin have heritage-listed places?
Harlin has 1 heritage-listed place on record.
What is the typical lot size in Harlin?
Across 496 surveyed parcels in Harlin, the median lot size is about 181,043 m². There are also 57 registered easements mapped in the suburb.
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%.
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 is the most disadvantaged tenth, decile 10 the least).
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.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Yimbun | 7.1 km | Not mapped | 51% |
| Gregors Creek | 8.2 km | Not mapped | 44% |
| Braemore | 8.4 km | Not mapped | 51% |
| Scrub Creek | 9.6 km | Not mapped | 55% |
| Ivory Creek | 10.7 km | Not mapped | 74% |
| Colinton | 12.8 km | Not mapped | 65% |
| Moore | 12.9 km | Not mapped | 65% |
| Fulham | 14.1 km | Not mapped | 50% |
| Toogoolawah | 14.6 km | 25% | 26% |
| Cressbrook | 14.6 km | 5% | 17% |