Hackham flood map & planning overlays

A planning-constraint profile of Hackham (City of Onkaparinga, SA) - 2.17 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.

Planning schematicHackham

Constraint readout

2.17 km² - this suburb is highly constrained by planning overlays.

Flood overlay 3%

below council avg (4%) · #14 of 47 mapped council suburbs

Bushfire-prone 42%

below council avg (69%) · #35 of 47 mapped council suburbs

Environmental0%

below council avg (12%) · #29 of 47 in council

Heritage sites 6 Aircraft seen below 3,000 ft 19% Mostly General Neighbourhood Flood 14th most affected of 47 → Bushfire 35th most affected of 47 →

Elevation hillshade with street names, clipped to Hackham'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 Hackham

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

Under observed aircraft

32%

of the suburb, at or below 10,000 ft

Below 3,000 ft

19%

of the suburb's area

Lowest measured

2,000 ft

averaging 3,500 ft

How often

not established

aircraft were seen, but not often enough to put a rate on

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.

Hackham at a glance

Parcels 1,972 Median lot 594 m² Bus stops 20

How Hackham is zoned

General Neighbourhood 82%

Employment 17%

Suburban Activity Centre 1%

Local Activity Centre 0%

Hills Neighbourhood 0%

Selling in Hackham? 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 2.17 km², Hackham is highly constrained by planning overlays. About 3% of the suburb sits within a mapped flood overlay, and 42% is flagged bushfire-prone. There are 6 heritage-listed sites on record, and the dominant land-use zone is General Neighbourhood. The median lot measures about 594 m² across 1,972 parcels.

Who lives in Hackham

Census 2021 figures published by the ABS for the Hackham suburb boundary itself, not a wider region.

Population

4,491

usual residents, 2021

Median age

years

Median household income

$1,158

per week, City of Onkaparinga suburb typical $1,512

Median rent

$297

per week, City of Onkaparinga suburb typical $320

Median mortgage

$1,300

per month

Household size

2.3

people, average

Socio-economic standing

ABS SEIFA 2021 ranks every Australian suburb. Decile 1 is the most disadvantaged tenth of the country, decile 10 the least.

Advantage and disadvantage (IRSAD) Decile 1

most disadvantagedleast disadvantaged

Score 876, and decile 1 within South Australia. The national average is 1000.

Relative disadvantage (IRSD) Decile 2

most disadvantagedleast disadvantaged

Age profile

Share of Hackham's 4,491 residents in each ABS age band.

0-4 6.0%

5-14 11.5%

15-19 5.2%

20-24 5.9%

25-34 13.8%

35-44 12.5%

45-54 11.1%

55-64 10.6%

65-74 12.6%

75-84 7.7%

85+ 3.1%

Population trend, 2001 to 2025

Estimated resident population of Hackham - Onkaparinga Hills, the wider ABS statistical area containing Hackham. There is no annual population series published at suburb level, so this describes the surrounding area rather than Hackham 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.

Hackham 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 Hackham 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 19% of Hackham. 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 Hackham lot.

See what's in the $9 report →

Hackham planning - frequently asked

Is Hackham flood-prone?

About 3% of Hackham falls within a mapped flood overlay, against the council-wide suburb average of 4%.

Is Hackham bushfire-prone?

Around 42% of Hackham is mapped as bushfire-prone, compared with a City of Onkaparinga average of 69%.

Is Hackham under a flight path?

Aircraft were observed below 3,000 ft over about 19% of Hackham, and over about 32% 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 3,500 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 Hackham?

The dominant planning zone in Hackham is General Neighbourhood, though the suburb also includes Employment and Suburban Activity Centre.

Does Hackham have heritage-listed places?

Hackham has 6 heritage-listed places on record.

What is the typical lot size in Hackham?

Across 1,972 surveyed parcels in Hackham, the median lot size is about 594 m².

Does Hackham have a train station?

There is no train station inside Hackham itself. The suburb is served by 20 bus stops.

What is the population of Hackham?

At the 2021 Census Hackham 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 Hackham, went from 6,209 people in 2001 to 7,376 in 2025, up 19%.

Is Hackham an advantaged suburb?

On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Hackham 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 Hackham?

Median household income in Hackham 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
Hackham West	1.5 km	0%	0%
Huntfield Heights	2.0 km	6%	32%
Onkaparinga Heights	2.0 km	0%	100%
Morphett Vale	2.8 km	2%	25%
Noarlunga Downs	3.1 km	22%	18%
Noarlunga Centre	3.3 km	0%	0%
Christie Downs	3.7 km	0%	0%
Onkaparinga Hills	3.8 km	0%	99%
Seaford Meadows	4.6 km	27%	12%
Old Noarlunga	4.7 km	13%	96%

See all City of Onkaparinga suburb profiles →