Biddon zoning & planning overlays
A planning-constraint profile of Biddon
(Gilgandra, NSW) - 291.3 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 26 September 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
291.3 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 Biddon's boundary, with the bushfire and environmental overlays drawn on top. No flood layer is drawn because we hold no flood mapping for this area.
Nearby suburbs, nearest first
Biddon at a glance
How Biddon is zoned
Buying in Biddon? 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 291.3 km², Biddon 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, 100% 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 1,242,746 m² across 124 parcels.
Who lives in Biddon
Census 2021 figures published by the ABS for the Biddon 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 1033, and decile 7 within New South Wales. The national average is 1000.
Age profile
Share of Biddon's 123 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Gilgandra, the wider ABS statistical area containing Biddon. There is no annual population series published at suburb level, so this describes the surrounding area rather than Biddon itself.
4,832 in 2001 to 4,426 in 2025, down 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.
Biddon 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 | 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 Biddon 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 Biddon lot.
See what's in the $9 report →Biddon planning - frequently asked
Is Biddon flood-prone?
We don't yet hold flood mapping covering Biddon, 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. Gilgandra is the authority to check for flood mapping in this area.
Is Biddon bushfire-prone?
Around 100% of Biddon is mapped as bushfire-prone, compared with a Gilgandra average of 98%.
What is the zoning in Biddon?
The dominant planning zone in Biddon is Primary Production, though the suburb also includes National Parks and Nature Reserves and Forestry.
Does Biddon have heritage-listed places?
Biddon has 1 heritage-listed place on record.
What is the typical lot size in Biddon?
Across 124 surveyed parcels in Biddon, the median lot size is about 1,242,746 m². There are also 3 registered easements mapped in the suburb.
Does Biddon have a train station?
There is no train station inside Biddon itself. The suburb is served by 20 bus stops.
What is the population of Biddon?
At the 2021 Census Biddon had 123 usual residents, with a median age of 38 and an average household size of 2.5 people. The wider Gilgandra statistical area, which contains Biddon, went from 4,832 people in 2001 to 4,426 in 2025, down 8%.
Is Biddon an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Biddon scores 1033 and sits in decile 8 of 10 nationally and decile 7 within New South Wales (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Biddon?
Median household income in Biddon was $1,300 a week at the 2021 Census, against $1,333 for the typical suburb in Gilgandra. Median rent was $108 a week and the median mortgage repayment $759 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Bearbong | 15.5 km | Not mapped | 100% |
| Tooraweenah | 18.5 km | Not mapped | 100% |
| Tonderburine | 24.7 km | Not mapped | 100% |
| Gilgandra | 24.9 km | Not mapped | 99% |
| Curban | 25.3 km | Not mapped | 100% |
| Breelong | 28.5 km | Not mapped | 100% |
| Mendooran | 29.3 km | Not mapped | 100% |
| Gowang Warrumbungle |
30.6 km | Not mapped | 100% |
| Armatree | 30.7 km | Not mapped | 100% |
| Warrumbungle | 34.5 km | Not mapped | 78% |