Millswood flood map & planning overlays
A planning-constraint profile of Millswood
(City of Unley, SA) - 1.0 km², mapped from live council and
state overlay data. This suburb is moderately constrained.
Profile updated 26 September 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
1.0 km² - this suburb is moderately constrained by planning overlays.
Elevation hillshade with street names, clipped to Millswood'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 Millswood
Two different things, kept apart on purpose. The ANEF contour is the planning instrument - a forecast published per airport that planning schemes use to control noise-sensitive development. Observed overflight is what a sampled aircraft-tracking feed actually recorded over the suburb - where aircraft flew, how low and how often.
Observed overflight - sampled 4 Sep to 26 Sep 2026
typical observed square 1 a day
Night movements: observed, lowest 1,500 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.
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.
Millswood at a glance
How Millswood is zoned
Selling in Millswood? The zone and overlays on this page are the Planning and Design Code controls a Form 1 vendor's statement has to disclose.
Across its 1.0 km², Millswood is moderately constrained by planning overlays. About 32% of the suburb sits within a mapped flood overlay. There are 32 heritage-listed sites on record, and the dominant land-use zone is Established Neighbourhood. The median lot measures about 732 m² across 884 parcels.
Who lives in Millswood
Census 2021 figures published by the ABS for the Millswood 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 1128, and decile 10 within South Australia. The national average is 1000.
Age profile
Share of Millswood's 2,173 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Goodwood - Millswood, the wider ABS statistical area containing Millswood. There is no annual population series published at suburb level, so this describes the surrounding area rather than Millswood itself.
16,912 in 2001 to 18,506 in 2025, up 9%.
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.
Millswood 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 | the South Australian Planning and Design Code and Location SA spatial data |
| Bushfire-prone mapping | Mapped | the South Australian Planning and Design Code and Location SA spatial data |
| Zoning | Mapped | the South Australian Planning and Design Code and Location SA spatial data |
| Heritage and environment | Mapped where published | the South Australian Planning and Design Code and Location SA spatial data |
| Aircraft noise contours (ANEF) | Not held | the South Australian Planning and Design Code and Location SA spatial data, 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 26 September 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 Millswood 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.
Aircraft have been seen below 3,000 ft over about 35% of Millswood. 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 an indicative AS 2870 site class for a Millswood lot.
See what's in the $9 report →Millswood planning - frequently asked
Is Millswood flood-prone?
About 32% of Millswood falls within a mapped flood overlay, against the council-wide suburb average of 20%.
Is Millswood bushfire-prone?
Bushfire mapping covers Millswood and little to none of it is mapped as bushfire-prone.
Is Millswood under a flight path?
Aircraft were observed below 3,000 ft over about 35% of Millswood, and over about 50% at any altitude up to 10,000 ft, in the period sampled (4 Sep 2026 to 26 Sep 2026). The lowest measured aircraft was at 1,000 ft, with an average of 2,500 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 Millswood?
The dominant planning zone in Millswood is Established Neighbourhood, though the suburb also includes Recreation and Business Neighbourhood.
Does Millswood have heritage-listed places?
Millswood has 32 heritage-listed places on record.
What is the typical lot size in Millswood?
Across 884 surveyed parcels in Millswood, the median lot size is about 732 m².
Does Millswood have a train station?
There is no train station inside Millswood itself. The suburb is served by 5 bus stops.
What is the population of Millswood?
At the 2021 Census Millswood had 2,173 usual residents, with a median age of 45 and an average household size of 2.7 people. The wider Goodwood - Millswood statistical area, which contains Millswood, went from 16,912 people in 2001 to 18,506 in 2025, up 9%.
Is Millswood an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Millswood scores 1128 and sits in decile 10 of 10 nationally and decile 10 within South Australia (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Millswood?
Median household income in Millswood was $2,836 a week at the 2021 Census, against $2,008 for the typical suburb in City of Unley. Median rent was $420 a week and the median mortgage repayment $2,253 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Kings Park | 0.6 km | <1% | 0% |
| Goodwood | 0.7 km | 37% | 0% |
| Clarence Park | 0.9 km | <1% | 0% |
| Forestville | 1.0 km | 50% | 0% |
| Hyde Park | 1.2 km | 22% | 0% |
| Unley Park | 1.2 km | 29% | 0% |
| Wayville | 1.3 km | 39% | 0% |
| Black Forest | 1.4 km | 1% | 0% |
| Everard Park | 1.4 km | 30% | 0% |
| Westbourne Park City of Mitcham |
1.6 km | 18% | 0% |