Flaxley flood map & planning overlays
A planning-constraint profile of Flaxley
(Mount Barker District Council, SA) - 15.82 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 3 October 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
15.82 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Flaxley'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 Flaxley
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 3 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.
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.
Flaxley at a glance
How Flaxley is zoned
Selling in Flaxley? 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 15.82 km², Flaxley 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 are 6 heritage-listed sites on record, and the dominant land-use zone is Productive Rural Landscape. The median lot measures about 82,362 m² across 83 parcels.
Who lives in Flaxley
Census 2021 figures published by the ABS for the Flaxley 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 1026, and decile 8 within South Australia. The national average is 1000.
Age profile
Share of Flaxley's 177 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Mount Barker Surrounds, the wider ABS statistical area containing Flaxley. There is no annual population series published at suburb level, so this describes the surrounding area rather than Flaxley itself.
5,440 in 2001 to 7,402 in 2025, up 36%.
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.
Flaxley 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 3 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 Flaxley 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 5% of Flaxley. 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 Flaxley lot.
See what's in the $9 report →Flaxley planning - frequently asked
Is Flaxley flood-prone?
Flood mapping covers Flaxley and none of the suburb falls within a mapped flood overlay (the council-wide suburb average is 0%).
Is Flaxley bushfire-prone?
Around 100% of Flaxley is mapped as bushfire-prone, compared with a Mount Barker District Council average of 100%.
Is Flaxley under a flight path?
Aircraft were observed below 3,000 ft over about 5% of Flaxley, and over about 37% at any altitude up to 10,000 ft, in the period sampled (4 Sep 2026 to 3 Oct 2026). The lowest measured aircraft was at 2,000 ft, with an average of 6,000 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 Flaxley?
The dominant planning zone in Flaxley is Productive Rural Landscape, though the suburb also includes Rural.
Does Flaxley have heritage-listed places?
Flaxley has 6 heritage-listed places on record.
What is the typical lot size in Flaxley?
Across 83 surveyed parcels in Flaxley, the median lot size is about 82,362 m².
What is the population of Flaxley?
At the 2021 Census Flaxley had 177 usual residents, with a median age of 48 and an average household size of 2.7 people. The wider Mount Barker Surrounds statistical area, which contains Flaxley, went from 5,440 people in 2001 to 7,402 in 2025, up 36%.
Is Flaxley an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Flaxley scores 1026 and sits in decile 8 of 10 nationally and decile 8 within South Australia (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Flaxley?
Median household income in Flaxley was $1,562 a week at the 2021 Census, against $1,812 for the typical suburb in Mount Barker District Council. Median rent was $350 a week and the median mortgage repayment $2,030 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Green Hills Range | 3.7 km | 0% | 100% |
| Echunga | 4.8 km | <1% | 100% |
| Macclesfield | 5.0 km | 0% | 100% |
| Bugle Ranges | 5.6 km | 0% | 100% |
| Jupiter Creek | 6.1 km | 0% | 100% |
| Mount Barker | 7.4 km | 6% | 100% |
| Chapel Hill | 7.6 km | 0% | 100% |
| Meadows | 7.6 km | 0% | 100% |
| Biggs Flat | 7.9 km | 0% | 100% |
| Gemmells Alexandrina Council |
8.4 km | 0% | 100% |