Onkaparinga Heights flood map & planning overlays
A planning-constraint profile of Onkaparinga Heights
(City of Onkaparinga, SA) - 2.75 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
2.75 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Onkaparinga Heights'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 Onkaparinga Heights
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.
Onkaparinga Heights at a glance
How Onkaparinga Heights is zoned
Selling in Onkaparinga Heights? 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 2.75 km², Onkaparinga Heights 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 3 heritage-listed sites on record, and the dominant land-use zone is Master Planned Neighbourhood. The median lot measures about 405 m² across 400 parcels.
Who lives in Onkaparinga Heights
Census 2021 figures published by the ABS for the Onkaparinga Heights 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 876, and decile 1 within South Australia. The national average is 1000.
Age profile
Share of Onkaparinga Heights's 4,491 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Hackham - Onkaparinga Hills, the wider ABS statistical area containing Onkaparinga Heights. There is no annual population series published at suburb level, so this describes the surrounding area rather than Onkaparinga Heights itself.
6,209 in 2001 to 7,376 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.
Onkaparinga Heights 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 Onkaparinga Heights 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 46% of Onkaparinga Heights. 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 Onkaparinga Heights lot.
See what's in the $9 report →Onkaparinga Heights planning - frequently asked
Is Onkaparinga Heights flood-prone?
Flood mapping covers Onkaparinga Heights and none of the suburb falls within a mapped flood overlay (the council-wide suburb average is 4%).
Is Onkaparinga Heights bushfire-prone?
Around 100% of Onkaparinga Heights is mapped as bushfire-prone, compared with a City of Onkaparinga average of 69%.
Is Onkaparinga Heights under a flight path?
Aircraft were observed below 3,000 ft over about 46% of Onkaparinga Heights, and over about 51% 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 3,000 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 Onkaparinga Heights?
The dominant planning zone in Onkaparinga Heights is Master Planned Neighbourhood, though the suburb also includes Hills Neighbourhood and General Neighbourhood.
Does Onkaparinga Heights have heritage-listed places?
Onkaparinga Heights has 3 heritage-listed places on record.
What is the typical lot size in Onkaparinga Heights?
Across 400 surveyed parcels in Onkaparinga Heights, the median lot size is about 405 m².
Does Onkaparinga Heights have a train station?
There is no train station inside Onkaparinga Heights itself. The suburb is served by 1 bus stop.
What is the population of Onkaparinga Heights?
At the 2021 Census Onkaparinga Heights had 4,491 usual residents, with a median age of 40 and an average household size of 2.3 people. The wider Hackham - Onkaparinga Hills statistical area, which contains Onkaparinga Heights, went from 6,209 people in 2001 to 7,376 in 2025, up 19%.
Is Onkaparinga Heights an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Onkaparinga Heights scores 876 and sits in decile 1 of 10 nationally and decile 1 within South Australia (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Onkaparinga Heights?
Median household income in Onkaparinga Heights was $1,158 a week at the 2021 Census, against $1,512 for the typical suburb in City of Onkaparinga. Median rent was $297 a week and the median mortgage repayment $1,300 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Huntfield Heights | 1.0 km | 6% | 32% |
| Noarlunga Downs | 1.9 km | 22% | 18% |
| Hackham | 2.0 km | 3% | 42% |
| Hackham West | 2.3 km | 0% | 0% |
| Old Noarlunga | 2.7 km | 13% | 96% |
| Seaford Meadows | 3.1 km | 27% | 12% |
| Noarlunga Centre | 3.4 km | 0% | 0% |
| Port Noarlunga South | 3.8 km | 29% | 45% |
| Port Noarlunga | 4.0 km | 20% | 46% |
| Christie Downs | 4.4 km | 0% | 0% |