Mount Jagged flood map & planning overlays
A planning-constraint profile of Mount Jagged
(Alexandrina Council, SA) - 40.35 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
40.35 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Mount Jagged'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 Jagged
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.
Mount Jagged at a glance
How Mount Jagged is zoned
Selling in Mount Jagged? 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 40.35 km², Mount Jagged 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. The dominant land-use zone is Productive Rural Landscape. The median lot measures about 129,164 m² across 98 parcels.
Who lives in Mount Jagged
Census 2021 figures published by the ABS for the Mount Jagged 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 995, and decile 6 within South Australia. The national average is 1000.
Age profile
Share of Mount Jagged's 155 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Strathalbyn Surrounds, the wider ABS statistical area containing Mount Jagged. There is no annual population series published at suburb level, so this describes the surrounding area rather than Mount Jagged itself.
5,223 in 2001 to 8,615 in 2025, up 65%.
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 Jagged 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 Mount Jagged 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 15% of Mount Jagged. 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 Mount Jagged lot.
See what's in the $9 report →Mount Jagged planning - frequently asked
Is Mount Jagged flood-prone?
Flood mapping covers Mount Jagged and none of the suburb falls within a mapped flood overlay (the council-wide suburb average is 16%).
Is Mount Jagged bushfire-prone?
Around 100% of Mount Jagged is mapped as bushfire-prone, compared with a Alexandrina Council average of 100%.
Is Mount Jagged under a flight path?
Aircraft were observed below 3,000 ft over about 15% of Mount Jagged, and over about 27% 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 1,500 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 Mount Jagged?
The dominant planning zone in Mount Jagged is Productive Rural Landscape, though the suburb also includes Rural.
Does Mount Jagged have heritage-listed places?
No heritage-listed places are on record within Mount Jagged.
What is the typical lot size in Mount Jagged?
Across 98 surveyed parcels in Mount Jagged, the median lot size is about 129,164 m².
What is the population of Mount Jagged?
At the 2021 Census Mount Jagged had 155 usual residents, with a median age of 41 and an average household size of 2.8 people. The wider Strathalbyn Surrounds statistical area, which contains Mount Jagged, went from 5,223 people in 2001 to 8,615 in 2025, up 65%.
Is Mount Jagged an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Mount Jagged scores 995 and sits in decile 6 of 10 nationally and decile 6 within South Australia (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Mount Jagged?
Median household income in Mount Jagged was $1,800 a week at the 2021 Census, against $1,655 for the typical suburb in Alexandrina Council. Median rent was $300 a week and the median mortgage repayment $1,957 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Mosquito Hill | 4.4 km | 0% | 100% |
| Hindmarsh Tiers City of Victor Harbor |
6.8 km | 0% | 100% |
| Hindmarsh Valley City of Victor Harbor |
7.1 km | <1% | 100% |
| Tooperang | 8.4 km | 0% | 100% |
| Mount Compass | 8.4 km | 0% | 100% |
| Middleton | 9.5 km | 0% | 99% |
| Port Elliot | 9.6 km | 0% | 99% |
| Nangkita | 10.1 km | 0% | 100% |
| Lower Inman Valley City of Victor Harbor |
12.0 km | 1% | 100% |
| Chiton | 12.1 km | 3% | 98% |