Trentham Cliffs flood map & planning overlays
A planning-constraint profile of Trentham Cliffs
(Wentworth, NSW) - 23.36 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 23 September 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
23.36 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Trentham Cliffs's boundary, with the flood, bushfire and environmental overlays drawn on top.
Nearby suburbs, nearest first
Trentham Cliffs at a glance
How Trentham Cliffs is zoned
Buying in Trentham Cliffs? 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 23.36 km², Trentham Cliffs is highly constrained by planning overlays. About 6% of the suburb sits within a mapped flood overlay, and 50% is flagged bushfire-prone. The dominant land-use zone is Primary Production. The median lot measures about 19,045 m² across 97 parcels.
Who lives in Trentham Cliffs
Census 2021 figures published by the ABS for the Trentham Cliffs 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 1072, and decile 9 within New South Wales. The national average is 1000.
Age profile
Share of Trentham Cliffs's 85 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Wentworth - Buronga, the wider ABS statistical area containing Trentham Cliffs. There is no annual population series published at suburb level, so this describes the surrounding area rather than Trentham Cliffs itself.
6,179 in 2001 to 6,904 in 2025, up 12%.
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.
Trentham Cliffs 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 23 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 Trentham Cliffs 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 Trentham Cliffs lot.
See what's in the $9 report →Trentham Cliffs planning - frequently asked
Is Trentham Cliffs flood-prone?
About 6% of Trentham Cliffs falls within a mapped flood overlay, against the council-wide suburb average of 13%.
Is Trentham Cliffs bushfire-prone?
Around 50% of Trentham Cliffs is mapped as bushfire-prone, compared with a Wentworth average of 73%.
What is the zoning in Trentham Cliffs?
The dominant planning zone in Trentham Cliffs is Primary Production, though the suburb also includes Primary Production Small Lots and Natural Waterways.
Does Trentham Cliffs have heritage-listed places?
No heritage-listed places are on record within Trentham Cliffs.
What is the typical lot size in Trentham Cliffs?
Across 97 surveyed parcels in Trentham Cliffs, the median lot size is about 19,045 m². There are also 8 registered easements mapped in the suburb.
What is the population of Trentham Cliffs?
At the 2021 Census Trentham Cliffs had 85 usual residents, with a median age of 44 and an average household size of 2.6 people. The wider Wentworth - Buronga statistical area, which contains Trentham Cliffs, went from 6,179 people in 2001 to 6,904 in 2025, up 12%.
Is Trentham Cliffs an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Trentham Cliffs scores 1072 and sits in decile 10 of 10 nationally and decile 9 within New South Wales (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Trentham Cliffs?
Median household income in Trentham Cliffs was $1,625 a week at the 2021 Census, against $1,589 for the typical suburb in Wentworth. Median rent was $175 a week and the median mortgage repayment $1,467 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Monak | 8.1 km | 8% | 88% |
| Gol Gol | 8.3 km | 16% | 16% |
| Buronga | 10.8 km | 34% | 59% |
| Paringi | 13.2 km | <1% | 100% |
| Mourquong | 13.7 km | 15% | 57% |
| Boeill Creek | 17.4 km | 95% | 71% |
| Coomealla | 21.6 km | 9% | 68% |
| Dareton | 25.8 km | 55% | 2% |
| Mallee | 26.0 km | 1% | 99% |
| Curlwaa | 30.0 km | 41% | 44% |