Millbrook flood map & planning overlays
Millbrook's 5 heritage places sit on 3 ha farms with 11.5% flood mapping.
Free map preview, then PDF reports from $9 - about the price of an iced latte on a public holiday.
A planning-constraint profile of Millbrook
(Moorabool, VIC) - 39.31 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 24 October 2026.
Constraint readout
39.31 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Millbrook'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 Millbrook
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 3,500 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.
Millbrook at a glance
How Millbrook is zoned
Selling in Millbrook? The zoning and planning overlays on this page are the controls a Section 32 vendor statement discloses.
Across its 39.31 km², Millbrook is highly constrained by planning overlays. About 12% of the suburb sits within a mapped flood overlay, and 100% is flagged bushfire-prone. There are 5 heritage-listed sites on record, and the dominant land-use zone is Farming Zone (FZ). The median lot measures about 33,918 m² across 385 parcels.
Who lives in Millbrook
Census 2021 figures published by the ABS for the Millbrook 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 999, and decile 5 within Victoria. The national average is 1000.
Age profile
Share of Millbrook's 180 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Gordon (Vic.), the wider ABS statistical area containing Millbrook. There is no annual population series published at suburb level, so this describes the surrounding area rather than Millbrook itself.
5,350 in 2001 to 6,557 in 2025, up 23%.
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.
Millbrook 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 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 Millbrook 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 18% of Millbrook. 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 Millbrook lot.
Millbrook planning - frequently asked
Is Millbrook flood-prone?
About 12% of Millbrook falls within a mapped flood overlay, against the council-wide suburb average of 7%.
Is Millbrook bushfire-prone?
Around 100% of Millbrook is mapped as bushfire-prone, compared with a Moorabool average of 98%.
Is Millbrook under a flight path?
Aircraft were observed below 3,000 ft over about 18% of Millbrook, and over about 88% 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 2,000 ft, with an average of 4,000 ft. At the busiest point in the suburb about 1 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 Millbrook?
The dominant planning zone in Millbrook is Farming Zone (FZ), though the suburb also includes Public Use Zone (PUZ1) and Transport Zone (TRZ1).
Does Millbrook have heritage-listed places?
Millbrook has 5 heritage-listed places on record.
What is the typical lot size in Millbrook?
Across 385 surveyed parcels in Millbrook, the median lot size is about 33,918 m². There are also 40 registered easements mapped in the suburb.
Does Millbrook have a train station?
There is no train station inside Millbrook itself. The suburb is served by 2 bus stops.
What is the population of Millbrook?
At the 2021 Census Millbrook had 180 usual residents, with a median age of 44 and an average household size of 2.8 people. The wider Gordon (Vic.) statistical area, which contains Millbrook, went from 5,350 people in 2001 to 6,557 in 2025, up 23%.
Is Millbrook an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Millbrook scores 999 and sits in decile 6 of 10 nationally and decile 5 within Victoria (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Millbrook?
Median household income in Millbrook was $2,333 a week at the 2021 Census, against $1,798 for the typical suburb in Moorabool. Median rent was $293 a week and the median mortgage repayment $1,993 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Wallace | 5.7 km | 13% | 100% |
| Lal Lal | 6.4 km | 18% | 100% |
| Bungaree | 6.6 km | 10% | 100% |
| Yendon | 7.0 km | 6% | 100% |
| Dunnstown | 7.1 km | 13% | 100% |
| Gordon | 7.2 km | 8% | 100% |
| Mount Egerton | 8.6 km | 5% | 100% |
| Leigh Creek | 9.2 km | 6% | 100% |
| Navigators | 9.9 km | 13% | 100% |
| Springbank | 10.3 km | 11% | 100% |