Ashby Island flood map & planning overlays
A planning-constraint profile of Ashby Island
(Clarence Valley, NSW) - 2.41 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
2.41 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Ashby Island's boundary, with the flood, bushfire and environmental overlays drawn on top.
Nearby suburbs, nearest first
Ashby Island at a glance
How Ashby Island is zoned
Buying in Ashby Island? 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 2.41 km², Ashby Island is highly constrained by planning overlays. About 100% of the suburb sits within a mapped flood overlay, and 80% is flagged bushfire-prone. There is 1 heritage-listed site on record, and the dominant land-use zone is Primary Production. The median lot measures about 13,327 m² across 12 parcels.
Who lives in Ashby Island
Census 2021 figures published by the ABS for the Ashby Island 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 990, and decile 5 within New South Wales. The national average is 1000.
Population trend, 2001 to 2025
Estimated resident population of Grafton Surrounds, the wider ABS statistical area containing Ashby Island. There is no annual population series published at suburb level, so this describes the surrounding area rather than Ashby Island itself.
14,917 in 2001 to 18,099 in 2025, up 21%.
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.
Ashby Island 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 | Watched, not yet sampled here | 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 Ashby Island 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 Ashby Island lot.
See what's in the $9 report →Ashby Island planning - frequently asked
Is Ashby Island flood-prone?
About 100% of Ashby Island falls within a mapped flood overlay, against the council-wide suburb average of 24%.
Is Ashby Island bushfire-prone?
Around 80% of Ashby Island is mapped as bushfire-prone, compared with a Clarence Valley average of 94%.
What is the zoning in Ashby Island?
The dominant planning zone in Ashby Island is Primary Production, though the suburb also includes Recreational Waterways.
Does Ashby Island have heritage-listed places?
Ashby Island has 1 heritage-listed place on record.
What is the typical lot size in Ashby Island?
Across 12 surveyed parcels in Ashby Island, the median lot size is about 13,327 m².
Is Ashby Island an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Ashby Island scores 990 and sits in decile 6 of 10 nationally and decile 5 within New South Wales (decile 1 is the most disadvantaged tenth, decile 10 the least).
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Ashby | 2.6 km | 35% | 87% |
| Maclean | 3.1 km | 65% | 61% |
| Warregah Island | 4.3 km | 100% | 82% |
| Harwood | 4.4 km | 99% | 80% |
| Townsend | 4.8 km | 46% | 73% |
| James Creek | 4.8 km | 56% | 94% |
| Ashby Heights | 5.0 km | 13% | 99% |
| Chatsworth | 5.8 km | 99% | 93% |
| Palmers Channel | 7.3 km | 97% | 98% |
| Ilarwill | 7.4 km | 32% | 97% |