Diamond Creek flood map & planning overlays
Diamond Creek: 12,503 people and 43 heritage places, median 39.
Free map preview, then PDF reports from $9 - about the price of an iced latte on a public holiday.
A planning-constraint profile of Diamond Creek
(Nillumbik, VIC) - 17.86 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 24 October 2026.
Constraint readout
17.86 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Diamond Creek'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 Diamond Creek
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 2,000 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.
Diamond Creek at a glance
How Diamond Creek is zoned
Selling in Diamond Creek? The zoning and planning overlays on this page are the controls a Section 32 vendor statement discloses.
Across its 17.86 km², Diamond Creek is highly constrained by planning overlays. About 7% of the suburb sits within a mapped flood overlay, and 82% is flagged bushfire-prone. There are 43 heritage-listed sites on record, and the dominant land-use zone is Rural Conservation Zone (RCZ3). The median lot measures about 791 m² across 5,633 parcels.
Who lives in Diamond Creek
Census 2021 figures published by the ABS for the Diamond Creek 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 10 within Victoria. The national average is 1000.
Age profile
Share of Diamond Creek's 12,503 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Wattle Glen - Diamond Creek, the wider ABS statistical area containing Diamond Creek. There is no annual population series published at suburb level, so this describes the surrounding area rather than Diamond Creek itself.
12,601 in 2001 to 14,859 in 2025, up 18%.
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.
Diamond Creek 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 Diamond Creek 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 57% of Diamond Creek. 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 Diamond Creek lot.
Diamond Creek planning - frequently asked
Is Diamond Creek flood-prone?
About 7% of Diamond Creek falls within a mapped flood overlay, against the council-wide suburb average of 5%.
Is Diamond Creek bushfire-prone?
Around 82% of Diamond Creek is mapped as bushfire-prone, compared with a Nillumbik average of 94%.
Is Diamond Creek under a flight path?
Aircraft were observed below 3,000 ft over about 57% of Diamond Creek, and over about 90% 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 4,000 ft. At the busiest point in the suburb about 20 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 Diamond Creek?
The dominant planning zone in Diamond Creek is Rural Conservation Zone (RCZ3), though the suburb also includes General Residential Zone (GRZ1) and Public Park and Recreation Zone (PPRZ).
Does Diamond Creek have heritage-listed places?
Diamond Creek has 43 heritage-listed places on record.
What is the typical lot size in Diamond Creek?
Across 5,633 surveyed parcels in Diamond Creek, the median lot size is about 791 m². There are also 3,550 registered easements mapped in the suburb.
Does Diamond Creek have a train station?
Yes - Diamond Creek has 1 train station: Diamond Creek Station. It is also served by 43 bus stops.
What is the population of Diamond Creek?
At the 2021 Census Diamond Creek had 12,503 usual residents, with a median age of 39 and an average household size of 2.9 people. The wider Wattle Glen - Diamond Creek statistical area, which contains Diamond Creek, went from 12,601 people in 2001 to 14,859 in 2025, up 18%.
Is Diamond Creek an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Diamond Creek scores 1072 and sits in decile 10 of 10 nationally and decile 10 within Victoria (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Diamond Creek?
Median household income in Diamond Creek was $2,508 a week at the 2021 Census, against $2,391 for the typical suburb in Nillumbik. Median rent was $430 a week and the median mortgage repayment $2,167 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Yarrambat | 3.0 km | 1% | 100% |
| Wattle Glen | 3.1 km | 7% | 99% |
| Plenty | 3.7 km | 2% | 98% |
| Eltham North | 4.2 km | 7% | 54% |
| St Helena Banyule |
4.3 km | 4% | 29% |
| Hurstbridge | 4.3 km | 5% | 100% |
| Briar Hill Banyule |
5.7 km | 4% | 3% |
| Greensborough Banyule |
5.8 km | 8% | 20% |
| Research | 5.9 km | <1% | 99% |
| Eltham | 6.0 km | 12% | 68% |