Sellicks Hill flood map & planning overlays
A planning-constraint profile of Sellicks Hill
(City of Onkaparinga, SA) - 46.15 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 26 September 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
46.15 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Sellicks Hill'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 Sellicks Hill
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 2 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.
Sellicks Hill at a glance
How Sellicks Hill is zoned
Selling in Sellicks Hill? 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 46.15 km², Sellicks Hill 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 8 heritage-listed sites on record, and the dominant land-use zone is Rural. The median lot measures about 46,137 m² across 292 parcels.
Who lives in Sellicks Hill
Census 2021 figures published by the ABS for the Sellicks Hill 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 1004, and decile 7 within South Australia. The national average is 1000.
Age profile
Share of Sellicks Hill's 299 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Willunga, the wider ABS statistical area containing Sellicks Hill. There is no annual population series published at suburb level, so this describes the surrounding area rather than Sellicks Hill itself.
3,173 in 2001 to 3,784 in 2025, up 19%.
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.
Sellicks Hill 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 Sellicks Hill 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 54% of Sellicks Hill. 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 Sellicks Hill lot.
See what's in the $9 report →Sellicks Hill planning - frequently asked
Is Sellicks Hill flood-prone?
Flood mapping covers Sellicks Hill and none of the suburb falls within a mapped flood overlay (the council-wide suburb average is 4%).
Is Sellicks Hill bushfire-prone?
Around 100% of Sellicks Hill is mapped as bushfire-prone, compared with a City of Onkaparinga average of 69%.
Is Sellicks Hill under a flight path?
Aircraft were observed below 3,000 ft over about 54% of Sellicks Hill, and over about 60% 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 500 ft, with an average of 1,000 ft. At the busiest point in the suburb about 16 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 Sellicks Hill?
The dominant planning zone in Sellicks Hill is Rural, though the suburb also includes Hills Face and Productive Rural Landscape.
Does Sellicks Hill have heritage-listed places?
Sellicks Hill has 8 heritage-listed places on record.
What is the typical lot size in Sellicks Hill?
Across 292 surveyed parcels in Sellicks Hill, the median lot size is about 46,137 m².
What is the population of Sellicks Hill?
At the 2021 Census Sellicks Hill had 299 usual residents, with a median age of 51 and an average household size of 2.6 people. The wider Willunga statistical area, which contains Sellicks Hill, went from 3,173 people in 2001 to 3,784 in 2025, up 19%.
Is Sellicks Hill an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Sellicks Hill scores 1004 and sits in decile 7 of 10 nationally and decile 7 within South Australia (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Sellicks Hill?
Median household income in Sellicks Hill was $1,792 a week at the 2021 Census, against $1,512 for the typical suburb in City of Onkaparinga. Median rent was $280 a week and the median mortgage repayment $2,000 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Sellicks Beach | 3.4 km | 4% | 97% |
| Pages Flat Alexandrina Council |
4.7 km | 0% | 100% |
| Aldinga Beach | 5.4 km | 10% | 78% |
| Willunga South | 5.6 km | 0% | 100% |
| Aldinga | 6.7 km | 1% | 99% |
| Whites Valley | 7.2 km | 0% | 100% |
| Myponga The District Council of Yankalilla |
8.6 km | 0% | 100% |
| Port Willunga | 8.6 km | 7% | 90% |
| Mount Compass Alexandrina Council |
9.1 km | 0% | 100% |
| Willunga Hill Alexandrina Council |
9.3 km | 0% | 100% |