Thornhill Park zoning & planning overlays
Thornhill Park, median 29, keeps 10 heritage places among 3,066 residents.
Free map preview, then PDF reports from $9 - about the price of an iced latte on a public holiday.
A planning-constraint profile of Thornhill Park
(Melton, VIC) - 7.9 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 24 October 2026.
Constraint readout
7.9 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 Thornhill Park's boundary, with the bushfire and environmental overlays drawn on top. Magenta is where aircraft were observed in the sampled period, brightest below 3,000 ft. No flood layer is drawn because we hold no flood mapping for this area.
Nearby suburbs, nearest first
Aircraft noise and flight paths over Thornhill Park
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
typical observed square 1 a day
Night movements: observed, lowest 1,000 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.
Thornhill Park at a glance
How Thornhill Park is zoned
Selling in Thornhill Park? The zoning and planning overlays on this page are the controls a Section 32 vendor statement discloses.
Across its 7.9 km², Thornhill Park 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, 64% is flagged bushfire-prone. There are 10 heritage-listed sites on record, and the dominant land-use zone is Urban Growth Zone (UGZ3). The median lot measures about 350 m² across 4,667 parcels.
Who lives in Thornhill Park
Census 2021 figures published by the ABS for the Thornhill Park 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 1010, and decile 6 within Victoria. The national average is 1000.
Age profile
Share of Thornhill Park's 3,066 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Rockbank - Mount Cottrell, the wider ABS statistical area containing Thornhill Park. There is no annual population series published at suburb level, so this describes the surrounding area rather than Thornhill Park itself.
1,760 in 2001 to 35,856 in 2025, up 1937%.
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.
Thornhill Park 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 | 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 24 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 Thornhill Park 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 87% of Thornhill Park. 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 Thornhill Park lot.
Thornhill Park planning - frequently asked
Is Thornhill Park flood-prone?
We don't yet hold flood mapping covering Thornhill Park, 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. Melton is the authority to check for flood mapping in this area.
Is Thornhill Park bushfire-prone?
Around 64% of Thornhill Park is mapped as bushfire-prone, compared with a Melton average of 60%.
Is Thornhill Park under a flight path?
Aircraft were observed below 3,000 ft over about 87% of Thornhill Park, and over about 100% 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 500 ft, with an average of 5,500 ft. At the busiest point in the suburb about 9 aircraft a day were recorded passing over one 500 m square. 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 Thornhill Park?
The dominant planning zone in Thornhill Park is Urban Growth Zone (UGZ3), though the suburb also includes Urban Growth Zone (UGZ) and Urban Growth Zone (UGZ8).
Does Thornhill Park have heritage-listed places?
Thornhill Park has 10 heritage-listed places on record.
What is the typical lot size in Thornhill Park?
Across 4,667 surveyed parcels in Thornhill Park, the median lot size is about 350 m². There are also 1,320 registered easements mapped in the suburb.
Does Thornhill Park have a train station?
There is no train station inside Thornhill Park itself. The suburb is served by 14 bus stops.
What is the population of Thornhill Park?
At the 2021 Census Thornhill Park had 3,066 usual residents, with a median age of 29 and an average household size of 3.0 people. The wider Rockbank - Mount Cottrell statistical area, which contains Thornhill Park, went from 1,760 people in 2001 to 35,856 in 2025, up 1937%.
Is Thornhill Park an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Thornhill Park scores 1010 and sits in decile 7 of 10 nationally and decile 6 within Victoria (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Thornhill Park?
Median household income in Thornhill Park was $2,005 a week at the 2021 Census, against $1,841 for the typical suburb in Melton. Median rent was $380 a week and the median mortgage repayment $1,950 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Rockbank | 2.0 km | Not mapped | 68% |
| Strathtulloh | 2.7 km | 3% | 77% |
| Grangefields | 2.9 km | 9% | 100% |
| Cobblebank | 3.0 km | 1% | 75% |
| Fieldstone | 3.5 km | Not mapped | 100% |
| Aintree | 3.8 km | 8% | 36% |
| Weir Views | 4.8 km | 21% | 45% |
| Melton South | 5.3 km | 3% | 7% |
| Bonnie Brook | 5.3 km | 9% | 89% |
| Melton | 5.6 km | 6% | 63% |