Somerton Park flood map & planning overlays
A planning-constraint profile of Somerton Park
(City of Holdfast Bay, SA) - 2.28 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
2.28 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Somerton Park'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 Somerton Park
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
typical observed square 1 a day
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.
Somerton Park at a glance
How Somerton Park is zoned
Selling in Somerton Park? 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 2.28 km², Somerton Park is highly constrained by planning overlays. About 51% of the suburb sits within a mapped flood overlay. There are 33 heritage-listed sites on record, and the dominant land-use zone is General Neighbourhood. The median lot measures about 443 m² across 3,179 parcels.
Who lives in Somerton Park
Census 2021 figures published by the ABS for the Somerton Park 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 1053, and decile 9 within South Australia. The national average is 1000.
Age profile
Share of Somerton Park's 5,811 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Glenelg (SA), the wider ABS statistical area containing Somerton Park. There is no annual population series published at suburb level, so this describes the surrounding area rather than Somerton Park itself.
18,866 in 2001 to 21,791 in 2025, up 16%.
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.
Somerton Park 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 Somerton Park 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 83% of Somerton Park. 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 Somerton Park lot.
See what's in the $9 report →Somerton Park planning - frequently asked
Is Somerton Park flood-prone?
About 51% of Somerton Park falls within a mapped flood overlay, against the council-wide suburb average of 54%.
Is Somerton Park bushfire-prone?
Bushfire mapping covers Somerton Park and little to none of it is mapped as bushfire-prone.
Is Somerton Park under a flight path?
Aircraft were observed below 3,000 ft over about 83% of Somerton Park, and over about 84% 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 500 ft, with an average of 2,000 ft. At the busiest point in the suburb about 2 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 Somerton Park?
The dominant planning zone in Somerton Park is General Neighbourhood, though the suburb also includes Employment and Open Space.
Does Somerton Park have heritage-listed places?
Somerton Park has 33 heritage-listed places on record.
What is the typical lot size in Somerton Park?
Across 3,179 surveyed parcels in Somerton Park, the median lot size is about 443 m².
Does Somerton Park have a train station?
There is no train station inside Somerton Park itself. The suburb is served by 23 bus stops.
What is the population of Somerton Park?
At the 2021 Census Somerton Park had 5,811 usual residents, with a median age of 48 and an average household size of 2.2 people. The wider Glenelg (SA) statistical area, which contains Somerton Park, went from 18,866 people in 2001 to 21,791 in 2025, up 16%.
Is Somerton Park an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Somerton Park scores 1053 and sits in decile 9 of 10 nationally and decile 9 within South Australia (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Somerton Park?
Median household income in Somerton Park was $1,633 a week at the 2021 Census, against $1,681 for the typical suburb in City of Holdfast Bay. Median rent was $335 a week and the median mortgage repayment $2,058 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| North Brighton | 1.0 km | 77% | 0% |
| Glenelg South | 1.0 km | 61% | 0% |
| Glenelg East | 1.6 km | 46% | 0% |
| Hove | 1.7 km | 50% | 0% |
| Glengowrie City of Marion |
1.7 km | 42% | 0% |
| Warradale City of Marion |
1.9 km | 58% | 0% |
| Glenelg | 1.9 km | 56% | 0% |
| Brighton | 2.4 km | 59% | 0% |
| Morphettville City of Marion |
2.5 km | 10% | 0% |
| Oaklands Park City of Marion |
2.5 km | 37% | 0% |