Derriwong flood map & planning overlays
A planning-constraint profile of Derriwong
(Lachlan, NSW) - 53.0 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
53.0 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Derriwong's boundary, with the flood, bushfire and environmental overlays drawn on top.
Nearby suburbs, nearest first
Derriwong at a glance
How Derriwong is zoned
Buying in Derriwong? 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 53.0 km², Derriwong is highly constrained by planning overlays. Flood mapping covers the suburb and none of it falls within a mapped flood overlay, and 84% is flagged bushfire-prone. The dominant land-use zone is Primary Production. The median lot measures about 129,182 m² across 84 parcels.
Who lives in Derriwong
Census 2021 figures published by the ABS for the Derriwong 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 963, and decile 4 within New South Wales. The national average is 1000.
Population trend, 2001 to 2025
Estimated resident population of Condobolin, the wider ABS statistical area containing Derriwong. There is no annual population series published at suburb level, so this describes the surrounding area rather than Derriwong itself.
8,006 in 2001 to 6,345 in 2025, down 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.
Derriwong 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 | Not watched | 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 Derriwong 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 Derriwong lot.
See what's in the $9 report →Derriwong planning - frequently asked
Is Derriwong flood-prone?
Flood mapping covers Derriwong and none of the suburb falls within a mapped flood overlay.
Is Derriwong bushfire-prone?
Around 84% of Derriwong is mapped as bushfire-prone, compared with a Lachlan average of 98%.
What is the zoning in Derriwong?
The dominant planning zone in Derriwong is Primary Production, though the suburb also includes Infrastructure and Village.
Does Derriwong have heritage-listed places?
No heritage-listed places are on record within Derriwong.
What is the typical lot size in Derriwong?
Across 84 surveyed parcels in Derriwong, the median lot size is about 129,182 m².
Does Derriwong have a train station?
There is no train station inside Derriwong itself. The suburb is served by 2 bus stops.
Is Derriwong an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Derriwong scores 963 and sits in decile 4 of 10 nationally and decile 4 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 |
|---|---|---|---|
| Ootha Forbes |
8.6 km | 0% | 36% |
| Mulguthrie Forbes |
8.9 km | 0% | 2% |
| Yarrabandai Forbes |
19.9 km | 0% | 10% |
| Fairholme | 24.1 km | 0% | 100% |
| Fifield | 28.4 km | Not mapped | 100% |
| Condobolin | 29.0 km | 0% | 100% |
| Warroo Forbes |
30.5 km | 0% | 19% |
| Bogan Gate Parkes |
38.1 km | 0% | 21% |
| Bedgerabong Forbes |
40.5 km | 0% | 6% |
| Gunning Gap Forbes |
41.4 km | 0% | 2% |