Trewilga zoning & planning overlays
A planning-constraint profile of Trewilga
(Parkes, NSW) - 6.39 km², mapped from live council and
state overlay data. This suburb is relatively unconstrained 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
6.39 km² - this suburb is relatively unconstrained 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 Trewilga'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
Trewilga at a glance
How Trewilga is zoned
Buying in Trewilga? 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 6.39 km², Trewilga is relatively unconstrained 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. The dominant land-use zone is Primary Production. The median lot measures about 2,025 m² across 96 parcels.
Who lives in Trewilga
Census 2021 figures published by the ABS for the Trewilga 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 1002, and decile 6 within New South Wales. The national average is 1000.
Population trend, 2001 to 2025
Estimated resident population of Parkes Surrounds, the wider ABS statistical area containing Trewilga. There is no annual population series published at suburb level, so this describes the surrounding area rather than Trewilga itself.
3,789 in 2001 to 3,079 in 2025, down 19%.
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.
Trewilga 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 Trewilga 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 Trewilga lot.
See what's in the $9 report →Trewilga planning - frequently asked
Is Trewilga flood-prone?
We don't yet hold flood mapping covering Trewilga, 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. Parkes is the authority to check for flood mapping in this area.
Is Trewilga bushfire-prone?
Bushfire mapping covers Trewilga and little to none of it is mapped as bushfire-prone (the Parkes average is 14%).
What is the zoning in Trewilga?
The dominant planning zone in Trewilga is Primary Production.
Does Trewilga have heritage-listed places?
No heritage-listed places are on record within Trewilga.
What is the typical lot size in Trewilga?
Across 96 surveyed parcels in Trewilga, the median lot size is about 2,025 m².
Is Trewilga an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Trewilga scores 1002 and sits in decile 6 of 10 nationally and decile 6 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 |
|---|---|---|---|
| Alectown | 14.4 km | Not mapped | 17% |
| Peak Hill | 22.9 km | Not mapped | 13% |
| Obley Cabonne |
23.0 km | Not mapped | 100% |
| Goonumbla | 23.8 km | Not mapped | 5% |
| Baldry Cabonne |
26.1 km | Not mapped | 100% |
| Tomingley Narromine |
27.3 km | Not mapped | 100% |
| Bruie Plains | 33.3 km | Not mapped | 16% |
| Cooks Myalls | 34.1 km | Not mapped | 9% |
| Wambangalang Dubbo Regional |
35.1 km | Not mapped | 100% |
| Parkes | 36.2 km | 0% | 33% |