Simpson flood map & planning overlays
The VIC Simpson matches Boorcan at a median of 39, joint 5th-lowest.
Free map preview, then PDF reports from $9 - about the price of an iced latte on a public holiday.
A planning-constraint profile of Simpson
(Corangamite, VIC) - 198.45 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 24 October 2026.
Constraint readout
198.45 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Simpson'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 Simpson
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: not established - night is sampled as often as day, but too few night flights have been seen here to conclude either way.
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.
Simpson at a glance
How Simpson is zoned
Selling in Simpson? The zoning and planning overlays on this page are the controls a Section 32 vendor statement discloses.
Across its 198.45 km², Simpson is highly constrained by planning overlays. About 2% of the suburb sits within a mapped flood overlay, and 100% is flagged bushfire-prone. There are 3 heritage-listed sites on record, and the dominant land-use zone is Farming Zone (FZ1). The median lot measures about 182,910 m² across 506 parcels.
Who lives in Simpson
Census 2021 figures published by the ABS for the Simpson 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 992, and decile 5 within Victoria. The national average is 1000.
Age profile
Share of Simpson's 583 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Corangamite - South, the wider ABS statistical area containing Simpson. There is no annual population series published at suburb level, so this describes the surrounding area rather than Simpson itself.
7,914 in 2001 to 7,089 in 2025, down 10%.
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.
Simpson 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 Simpson 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 11% of Simpson. 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 Simpson lot.
Simpson planning - frequently asked
Is Simpson flood-prone?
About 2% of Simpson falls within a mapped flood overlay, against the council-wide suburb average of 10%.
Is Simpson bushfire-prone?
Around 100% of Simpson is mapped as bushfire-prone, compared with a Corangamite average of 96%.
Is Simpson under a flight path?
Aircraft were observed below 3,000 ft over about 11% of Simpson, and over about 21% 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 3,000 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 Simpson?
The dominant planning zone in Simpson is Farming Zone (FZ1), though the suburb also includes Public Conservation and Resource Zone (PCRZ) and Farming Zone (FZ).
Does Simpson have heritage-listed places?
Simpson has 3 heritage-listed places on record.
What is the typical lot size in Simpson?
Across 506 surveyed parcels in Simpson, the median lot size is about 182,910 m². There are also 291 registered easements mapped in the suburb.
What is the population of Simpson?
At the 2021 Census Simpson had 583 usual residents, with a median age of 39 and an average household size of 2.7 people. The wider Corangamite - South statistical area, which contains Simpson, went from 7,914 people in 2001 to 7,089 in 2025, down 10%.
Is Simpson an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Simpson scores 992 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 Simpson?
Median household income in Simpson was $1,566 a week at the 2021 Census, against $1,640 for the typical suburb in Corangamite. Median rent was $228 a week and the median mortgage repayment $1,083 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Kennedys Creek | 9.4 km | 9% | 100% |
| Bungador Colac Otway |
11.0 km | 13% | 100% |
| Cooriemungle | 11.3 km | 1% | 100% |
| Jancourt East | 12.2 km | <1% | 100% |
| Chapple Vale Colac Otway |
13.3 km | 10% | 100% |
| Carpendeit | 13.3 km | 2% | 100% |
| Irrewillipe Colac Otway |
14.8 km | 5% | 100% |
| Carlisle River Colac Otway |
16.7 km | 6% | 100% |
| Scotts Creek | 16.9 km | 4% | 100% |
| Swan Marsh Colac Otway |
17.4 km | 36% | 100% |