Yelgun flood map & planning overlays
A planning-constraint profile of Yelgun
(Byron, NSW) - 6.69 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 3 October 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
6.69 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Yelgun's boundary, with the flood, bushfire and environmental overlays drawn on top. Magenta is where aircraft were observed in the sampled period, brightest below 3,000 ft.
Nearby suburbs, nearest first
Aircraft noise and flight paths over Yelgun
Two different things, kept apart on purpose. The ANEF contour is the planning instrument - a forecast published per airport that planning schemes use to control noise-sensitive development. Observed overflight is what a sampled aircraft-tracking feed actually recorded over the suburb - where aircraft flew, how low and how often.
Observed overflight - sampled 4 Sep to 2 Oct 2026
typical observed square 1 a day
Night movements: not established - night is sampled as often as day, but too few night flights have been seen here to conclude either way.
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.
Yelgun at a glance
How Yelgun is zoned
Buying in Yelgun? The zoning, flood and bushfire lines on the section 10.7 certificate attached to the contract are mapped controls - see our s10.7 certificate guide.
Across its 6.69 km², Yelgun is highly constrained by planning overlays. About 9% of the suburb sits within a mapped flood overlay, and 100% is flagged bushfire-prone. There is 1 heritage-listed site on record, and the dominant land-use zone is Rural Landscape. The median lot measures about 53,435 m² across 41 parcels.
Who lives in Yelgun
Census 2021 figures published by the ABS for the Yelgun 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 977, and decile 4 within New South Wales. The national average is 1000.
Age profile
Share of Yelgun's 88 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Mullumbimby, the wider ABS statistical area containing Yelgun. There is no annual population series published at suburb level, so this describes the surrounding area rather than Yelgun itself.
7,623 in 2001 to 9,662 in 2025, up 27%.
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.
Yelgun 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 | NSW Government spatial services, NSW ePlanning and published council flood studies |
| Bushfire-prone mapping | Mapped | NSW Government spatial services, NSW ePlanning and published council flood studies |
| Zoning | Mapped | NSW Government spatial services, NSW ePlanning and published council flood studies |
| Heritage and environment | Mapped where published | NSW Government spatial services, NSW ePlanning and published council flood studies |
| Aircraft noise contours (ANEF) | Not held | NSW Government spatial services, NSW ePlanning and published council flood studies, Defence |
| Observed flight paths | Observed | adsb.lol, under the Open Database License |
| Demographics | Available | Australian Bureau of Statistics (2021 Census and SEIFA) |
Profile last materially updated 3 October 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 Yelgun 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.
Aircraft have been seen below 3,000 ft over about 66% of Yelgun. The report's Aircraft Overflight page narrows that to the address itself: how many aircraft a day, how low, and at what heights.
Building or pricing a slab? The $119 geotechnical desktop report covers geology, soils, bores and an indicative AS 2870 site class for a Yelgun lot.
See what's in the $9 report →Yelgun planning - frequently asked
Is Yelgun flood-prone?
About 9% of Yelgun falls within a mapped flood overlay, against the council-wide suburb average of 22%.
Is Yelgun bushfire-prone?
Around 100% of Yelgun is mapped as bushfire-prone, compared with a Byron average of 94%.
Is Yelgun under a flight path?
Aircraft were observed below 3,000 ft over about 66% of Yelgun, and over about 90% at any altitude up to 10,000 ft, in the period sampled (4 Sep 2026 to 2 Oct 2026). The lowest measured aircraft was at 1,000 ft, with an average of 3,000 ft. At the busiest point in the suburb about 2 aircraft a day were recorded passing over one 500 m square. 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 Yelgun?
The dominant planning zone in Yelgun is Rural Landscape, though the suburb also includes Environmental Conservation and Primary Production.
Does Yelgun have heritage-listed places?
Yelgun has 1 heritage-listed place on record.
What is the typical lot size in Yelgun?
Across 41 surveyed parcels in Yelgun, the median lot size is about 53,435 m².
What is the population of Yelgun?
At the 2021 Census Yelgun had 88 usual residents, with a median age of 52 and an average household size of 2.7 people. The wider Mullumbimby statistical area, which contains Yelgun, went from 7,623 people in 2001 to 9,662 in 2025, up 27%.
Is Yelgun an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Yelgun scores 977 and sits in decile 5 of 10 nationally and decile 4 within New South Wales (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Yelgun?
Median household income in Yelgun was $1,343 a week at the 2021 Census, against $1,634 for the typical suburb in Byron. Median rent was $250 a week and the median mortgage repayment $1,463 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Crabbes Creek Tweed |
2.3 km | 22% | 100% |
| Middle Pocket | 2.5 km | 8% | 100% |
| Billinudgel | 3.5 km | 30% | 100% |
| The Pocket | 3.6 km | 13% | 100% |
| Mooball Tweed |
5.1 km | 34% | 99% |
| Ocean Shores | 5.3 km | 54% | 81% |
| South Golden Beach | 5.5 km | 89% | 67% |
| Wooyung Tweed |
5.7 km | 76% | 98% |
| New Brighton | 6.8 km | 69% | 71% |
| Burringbar Tweed |
7.1 km | 8% | 99% |