Trentham flood map & planning overlays
Trentham: 1,382 people, 67 heritage places, $386 rents (2nd).
Free map preview, then PDF reports from $9 - about the price of an iced latte on a public holiday.
A planning-constraint profile of Trentham
(Hepburn, VIC) - 51.27 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 25 October 2026.
Constraint readout
51.27 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Trentham's boundary, with the flood, bushfire and environmental overlays drawn on top. Magenta is where aircraft were observed in the sampled period, brightest below 3,000 ft.
Nearby suburbs, nearest first
Aircraft noise and flight paths over Trentham
The ANEF contour is a published planning forecast and observed overflight is what a sampled tracking feed recorded - neither describes any individual property.
Observed overflight - sampled 4 Sep to 24 Oct 2026
Night movements: observed, lowest 9,000 ft - night is sampled as often as day, but night traffic is light, so this is a floor and no rate can be put on it.
How this is measured
Traffic is sampled rather than watched continuously, so every figure is a floor: aircraft not captured between samples are not represented. Rates are per 500 m square - the busiest square in the suburb, not a count of flights over the suburb - and a square is only rated where enough traffic was seen to measure it. Altitudes are above mean sea level. Flight paths change with runway use, weather, season and airspace design. This is a record of observed traffic; it is not a noise contour and not a planning control.
Trentham at a glance
How Trentham is zoned
Selling in Trentham? The zoning and planning overlays on this page are the controls a Section 32 vendor statement discloses.
Across its 51.27 km², Trentham is highly constrained by planning overlays. About 15% of the suburb sits within a mapped flood overlay, and 100% is flagged bushfire-prone. There are 67 heritage-listed sites on record, and the dominant land-use zone is Farming Zone (FZ2). The median lot measures about 2,031 m² across 1,384 parcels.
Who lives in Trentham
Census 2021 figures published by the ABS for the Trentham 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 1041, and decile 8 within Victoria. The national average is 1000.
Age profile
Share of Trentham's 1,382 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Daylesford, the wider ABS statistical area containing Trentham. There is no annual population series published at suburb level, so this describes the surrounding area rather than Trentham itself.
8,201 in 2001 to 10,342 in 2025, up 26%.
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 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 | Vicmap Planning and Victorian Government spatial services |
| Bushfire-prone mapping | Mapped | Vicmap Planning and Victorian Government spatial services |
| Zoning | Mapped | Vicmap Planning and Victorian Government spatial services |
| Heritage and environment | Mapped where published | Vicmap Planning and Victorian Government spatial services |
| Aircraft noise contours (ANEF) | Not held | Vicmap Planning and Victorian Government spatial services, Defence |
| Observed flight paths | Observed | adsb.lol, under the Open Database License |
| Demographics | Available | Australian Bureau of Statistics (2021 Census and SEIFA) |
Profile last materially updated 25 October 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 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.
See what's in the $9 report →Aircraft have been seen below 3,000 ft over about 6% of Trentham. The report's Aircraft Overflight page narrows that to the address itself: how many aircraft a day, how low, and at what heights.
Building or pricing a slab? The $119 geotechnical desktop report covers geology, soils, bores and the indicative soil reactivity range to expect for a Trentham lot.
Trentham planning - frequently asked
Is Trentham flood-prone?
About 15% of Trentham falls within a mapped flood overlay, against the council-wide suburb average of 7%.
Is Trentham bushfire-prone?
Around 100% of Trentham is mapped as bushfire-prone, compared with a Hepburn average of 100%.
Is Trentham under a flight path?
Aircraft were observed below 3,000 ft over about 6% of Trentham, and over about 40% at any altitude up to 10,000 ft, in the period sampled (4 Sep 2026 to 24 Oct 2026). The lowest measured aircraft was at 2,500 ft, with an average of 4,000 ft. Traffic is sampled rather than watched continuously and flight paths change with runway use, weather and season; the ANEF contour is the planning instrument.
What is the zoning in Trentham?
The dominant planning zone in Trentham is Farming Zone (FZ2), though the suburb also includes Public Conservation and Resource Zone (PCRZ) and Low Density Residential Zone (LDRZ1).
Does Trentham have heritage-listed places?
Trentham has 67 heritage-listed places on record.
What is the typical lot size in Trentham?
Across 1,384 surveyed parcels in Trentham, the median lot size is about 2,031 m². There are also 708 registered easements mapped in the suburb.
Does Trentham have a train station?
There is no train station inside Trentham itself. The suburb is served by 1 bus stop.
What is the population of Trentham?
At the 2021 Census Trentham had 1,382 usual residents, with a median age of 56 and an average household size of 2.2 people. The wider Daylesford statistical area, which contains Trentham, went from 8,201 people in 2001 to 10,342 in 2025, up 26%.
Is Trentham an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Trentham scores 1041 and sits in decile 8 of 10 nationally and decile 8 within Victoria (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Trentham?
Median household income in Trentham was $1,489 a week at the 2021 Census, against $1,400 for the typical suburb in Hepburn. Median rent was $386 a week and the median mortgage repayment $1,733 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Little Hampton | 4.3 km | 4% | 100% |
| North Blackwood | 4.6 km | 3% | 100% |
| Tylden South | 5.2 km | 18% | 100% |
| Newbury | 5.7 km | 6% | 100% |
| Lyonville | 5.8 km | 15% | 100% |
| Trentham East Macedon Ranges |
7.4 km | 4% | 100% |
| Fern Hill | 7.5 km | 20% | 100% |
| Barrys Reef Moorabool |
7.9 km | <1% | 100% |
| Bullarto | 9.2 km | Not mapped | 100% |
| Wheatsheaf | 9.3 km | 12% | 100% |