Mount Mercer flood map & planning overlays
Mount Mercer holds 33 ha lots, the 5th-largest in Golden Plains.
Free map preview, then PDF reports from $9 - about the price of an iced latte on a public holiday.
A planning-constraint profile of Mount Mercer
(Golden Plains, VIC) - 107.47 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 24 October 2026.
Constraint readout
107.47 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Mount Mercer'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 Mount Mercer
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 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.
Mount Mercer at a glance
How Mount Mercer is zoned
Selling in Mount Mercer? The zoning and planning overlays on this page are the controls a Section 32 vendor statement discloses.
Across its 107.47 km², Mount Mercer is highly constrained by planning overlays. Flood mapping covers the suburb and none of it falls within a mapped flood overlay, and 100% is flagged bushfire-prone. There is 1 heritage-listed site on record, and the dominant land-use zone is Farming Zone (FZ). The median lot measures about 325,412 m² across 196 parcels.
Who lives in Mount Mercer
Census 2021 figures published by the ABS for the Mount Mercer 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 916, and decile 1 within Victoria. The national average is 1000.
Age profile
Share of Mount Mercer's 94 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Golden Plains - South, the wider ABS statistical area containing Mount Mercer. There is no annual population series published at suburb level, so this describes the surrounding area rather than Mount Mercer itself.
5,111 in 2001 to 8,954 in 2025, up 75%.
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.
Mount Mercer 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 Mount Mercer 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 15% of Mount Mercer. 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 Mount Mercer lot.
Mount Mercer planning - frequently asked
Is Mount Mercer flood-prone?
Flood mapping covers Mount Mercer and less than 1% of the suburb falls within a mapped flood overlay (the council-wide suburb average is 6%).
Is Mount Mercer bushfire-prone?
Around 100% of Mount Mercer is mapped as bushfire-prone, compared with a Golden Plains average of 100%.
Is Mount Mercer under a flight path?
Aircraft were observed below 3,000 ft over about 15% of Mount Mercer, and over about 62% 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 1,000 ft, with an average of 4,500 ft. At the busiest point in the suburb about 7 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 Mount Mercer?
The dominant planning zone in Mount Mercer is Farming Zone (FZ), though the suburb also includes Rural Conservation Zone (RCZ1) and Public Conservation and Resource Zone (PCRZ).
Does Mount Mercer have heritage-listed places?
Mount Mercer has 1 heritage-listed place on record.
What is the typical lot size in Mount Mercer?
Across 196 surveyed parcels in Mount Mercer, the median lot size is about 325,412 m². There are also 50 registered easements mapped in the suburb.
What is the population of Mount Mercer?
At the 2021 Census Mount Mercer had 94 usual residents, with a median age of 45 and an average household size of 3.0 people. The wider Golden Plains - South statistical area, which contains Mount Mercer, went from 5,111 people in 2001 to 8,954 in 2025, up 75%.
Is Mount Mercer an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Mount Mercer scores 916 and sits in decile 2 of 10 nationally and decile 1 within Victoria (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Mount Mercer?
Median household income in Mount Mercer was $1,958 a week at the 2021 Census, against $1,748 for the typical suburb in Golden Plains. Median rent was $258 a week and the median mortgage repayment $1,192 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Cargerie Moorabool |
8.1 km | <1% | 100% |
| Dereel | 9.4 km | 1% | 100% |
| Grenville Moorabool |
9.6 km | 7% | 100% |
| Corindhap | 10.2 km | 2% | 100% |
| Garibaldi | 11.8 km | 18% | 100% |
| Enfield | 12.4 km | 3% | 100% |
| Shelford | 14.5 km | 7% | 100% |
| Rokewood | 14.8 km | 5% | 100% |
| Elaine Moorabool |
14.8 km | 5% | 100% |
| Meredith | 15.0 km | 4% | 100% |