Junction Hill flood map & planning overlays
A planning-constraint profile of Junction Hill
(Clarence Valley, NSW) - 7.4 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 26 September 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
7.4 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Junction Hill's boundary, with the flood, bushfire and environmental overlays drawn on top.
Nearby suburbs, nearest first
Aircraft noise and flight paths over Junction Hill
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 to
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.
Junction Hill at a glance
How Junction Hill is zoned
Buying in Junction Hill? 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 7.4 km², Junction Hill is highly constrained by planning overlays. About 57% of the suburb sits within a mapped flood overlay, and 67% is flagged bushfire-prone. There are 8 heritage-listed sites on record, and the dominant land-use zone is Primary Production. The median lot measures about 900 m² across 838 parcels.
Who lives in Junction Hill
Census 2021 figures published by the ABS for the Junction Hill 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 956, and decile 3 within New South Wales. The national average is 1000.
Age profile
Share of Junction Hill's 1,547 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Grafton, the wider ABS statistical area containing Junction Hill. There is no annual population series published at suburb level, so this describes the surrounding area rather than Junction Hill itself.
18,513 in 2001 to 19,905 in 2025, up 8%.
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.
Junction Hill 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 26 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 Junction Hill 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 Junction Hill lot.
See what's in the $9 report →Junction Hill planning - frequently asked
Is Junction Hill flood-prone?
About 57% of Junction Hill falls within a mapped flood overlay, against the council-wide suburb average of 24%.
Is Junction Hill bushfire-prone?
Around 67% of Junction Hill is mapped as bushfire-prone, compared with a Clarence Valley average of 94%.
Is Junction Hill under a flight path?
No aircraft were observed over Junction Hill in the period sampled (recent weeks to now). Sampling is intermittent, so that is a floor rather than proof that none fly over. 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 Junction Hill?
The dominant planning zone in Junction Hill is Primary Production, though the suburb also includes Low Density Residential and General Residential.
Does Junction Hill have heritage-listed places?
Junction Hill has 8 heritage-listed places on record.
What is the typical lot size in Junction Hill?
Across 838 surveyed parcels in Junction Hill, the median lot size is about 900 m². There are also 7 registered easements mapped in the suburb.
Does Junction Hill have a train station?
There is no train station inside Junction Hill itself. The suburb is served by 22 bus stops.
What is the population of Junction Hill?
At the 2021 Census Junction Hill had 1,547 usual residents, with a median age of 47 and an average household size of 2.4 people. The wider Grafton statistical area, which contains Junction Hill, went from 18,513 people in 2001 to 19,905 in 2025, up 8%.
Is Junction Hill an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Junction Hill scores 956 and sits in decile 4 of 10 nationally and decile 3 within New South Wales (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Junction Hill?
Median household income in Junction Hill was $1,340 a week at the 2021 Census, against $1,187 for the typical suburb in Clarence Valley. Median rent was $350 a week and the median mortgage repayment $1,528 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Crowther Island | 1.7 km | 100% | 52% |
| Carrs Creek | 2.1 km | 96% | 100% |
| Koolkhan | 2.1 km | 18% | 73% |
| Seelands | 2.8 km | 16% | 96% |
| Alumy Creek | 2.9 km | 99% | 100% |
| Carrs Peninsula | 3.0 km | 100% | 75% |
| Trenayr | 3.9 km | 39% | 92% |
| Carrs Island | 4.3 km | 100% | 77% |
| Grafton | 4.8 km | 91% | 10% |
| Great Marlow | 5.2 km | 99% | 84% |