Serpentine-Jarrahdale

Western Australia · Perth - South East · 32,246 people · 13 suburbs · 6 postcodes

Serpentine-Jarrahdale at a glance

32,246

Population

#24 of 123 in WA

905

km² area

36/km² density

35.4

Median age

-3.7 vs WA

$2,115

Median HH income/wk

#16 of 123 in WA

995

SEIFA IRSAD

#39 of 123 in WA

Schools

9 gov, 1 Cath, 3 indep

25.2%

Born overseas

12.9%

Renting

Map shows the Serpentine-Jarrahdale LGA boundary in blue with a marker per suburb. Hover for suburb name, click for details.

Marker colour reflects SEIFA IRSAD decile: ● 1-2 (most disadvantaged), ● 3-4, ● 5-6, ● 7-8, ● 9-10 (most advantaged).

Boundary source: ABS ASGS 2021. Map tiles: OpenStreetMap contributors.

Serpentine-Jarrahdale is a metropolitan Local Government Area in Western Australia, in the Perth region. It covers 13 suburbs across 6 postcodes and an area of 905 km². Serpentine-Jarrahdale has a population of 32,246 , ranking #24 most populous in WA. The most populous suburb is Byford (18,878 residents), and the highest median household income is in Cardup at $2,645/week. The LGA-wide median household income is $2,115/week and median age is 35.4. About 25.2% of residents were born overseas and 10.8% speak a language other than English at home.

Who lives here

Age structure

24.9%

11.5%

30.0%

23.2%

10.4%

0–14 (24.9%) 15–24 (11.5%) 25–44 (30.0%) 45–64 (23.2%) 65+ (10.4%)

Show counts

0–14 years	8,017 (24.9%)
15–24 years	3,719 (11.5%)
25–44 years	9,683 (30.0%)
45–64 years	7,472 (23.2%)
65+ years	3,337 (10.4%)

25.2%

Born overseas

10.8%

Speak a language other than English at home

2.9%

First Nations

3.0

Avg household size

How they live

Housing tenure

22.0%

65.1%

12.9%

Owned outright (22.0%) Mortgaged (65.1%) Renting (12.9%)

Dwelling type mix

99.3%

Separate house (99.3%) Semi/townhouse (0.5%) Flat/apartment (0.2%)

$379

Median weekly rent

$2,027

Median monthly mortgage

23.0%

Households with 0-1 cars

77.0%

Households with 2+ cars

Work and learning

4.0%

Unemployment rate

9,936

In full-time work

5,005

In part-time work

Schools in Serpentine-Jarrahdale

13 schools across Serpentine-Jarrahdale: 69.2% Government, 7.7% Catholic, 23.1% Independent. The WA average is 71.4% / 14.1% / 14.5%. Schools here have a median ICSEA of 992 (range 961 to 1035). WA median is 1006; national mean is 1000.

Sector mix

69.2%

23.1%

WA average for comparison

71.4%

14.1%

14.5%

Government Catholic Independent

Type breakdown

76.9%

15.4%

Primary (76.9%) Secondary (7.7%) Combined (15.4%) Special (0%)

ICSEA range

700 National mean 1000 1300

LGA median 992 WA median 1006LGA range 961 to 1035

ICSEA (Index of Community Socio-Educational Advantage) summarises the socio-economic background of each school's families. Higher values indicate more advantage. Source: ACARA 2025.

All 13 schools in Serpentine-Jarrahdale, sorted by enrolment:

School	Sector	Type	Suburb	Students	ICSEA
Byford Secondary College	Government	Secondary	Byford	1,419	971
Court Grammar School	Independent	Combined	Mundijong	1,022	1012
Salvado Catholic College	Catholic	Combined	Byford	867	1035
West Byford Primary School	Government	Primary	Byford	817	992
Woodland Grove Primary School	Government	Primary	Byford	781	993
Marri Grove Primary School	Government	Primary	Byford	545	963
Byford Primary School	Government	Primary	Byford	426	969
Beenyup Primary School	Government	Primary	Byford	340	961
Mundijong Primary School	Government	Primary	Mundijong	250	963
Serpentine Primary School	Government	Primary	Serpentine	229	997
Byford John Calvin School	Independent	Primary	Byford	208	1033
Jarrahdale Primary School	Government	Primary	Jarrahdale	68	988
Eton Farm Primary School	Independent	Primary	Serpentine	59	1010

Source: ACARA School Profiles 2025. ICSEA shown where reported; some schools (notably small primaries) do not publish ICSEA.

SEIFA socio-economic indexes

SEIFA 2021 ranks Australian areas across four dimensions. Scores are population-weighted averages of suburb-level SEIFA scores within Serpentine-Jarrahdale. Higher scores indicate more advantage; the national mean is 1000.

IRSAD

Relative socio-economic advantage and disadvantage

995

Ranked #39 of 123 WA LGAs

IRSD

Relative disadvantage only (lower = more disadvantaged)

1028

IER

Economic resources: income, wealth, housing

1090

IEO

Education and occupation: qualifications, skill levels

935

Suburbs in Serpentine-Jarrahdale

Serpentine-Jarrahdale contains 13 suburbs and 6 postcodes. Sorted by population.

Suburb	Postcode	Population	Median income	Median age
Byford	6122	18,878	$2,059/wk	31
Serpentine	6125	2,863	$1,955/wk	45
Oakford	6121	2,803	$2,451/wk	42
Darling Downs	6122	1,591	$2,480/wk	39
Mundijong	6123	1,246	$1,823/wk	40
Jarrahdale	6124	1,205	$2,057/wk	43
Cardup	6122	1,163	$2,645/wk	40
Whitby	6123	1,005	$2,117/wk	28
Mardella	6125	446	$2,288/wk	45
Hopeland	6125	313	$2,067/wk	47
Oldbury	6121	296	$1,928/wk	50
Keysbrook	6126	265	$1,458/wk	51
Karrakup	6122	172	$1,968/wk	47

Postcodes covered

6121, 6122, 6123, 6124, 6125, 6126

Compare Serpentine-Jarrahdale with neighbouring LGAs

Side-by-side demographic and socio-economic snapshot of Serpentine-Jarrahdale and its closest neighbouring LGAs.

LGA	Population	Median age	Median HH income	SEIFA IRSAD	% renting	% overseas-born
Serpentine-Jarrahdale (WA)	32,246	35.4	$2,115/wk	995	12.9%	25.2%
Armadale	94,186	36.0	$1,849/wk	971	22.7%	36.1%
Kwinana	45,866	34.3	$1,783/wk	950	28.3%	34.7%
Murray	17,987	44.9	$1,470/wk	931	19.9%	17.7%
Rockingham	134,897	37.3	$1,788/wk	962	25.6%	30.6%

Services and amenities

NDIS Providers NDIS provider directory for Serpentine-Jarrahdale Climate & weather Climate data for Byford

Frequently asked questions about Serpentine-Jarrahdale

What is the population of Serpentine-Jarrahdale?

The 2021 Census recorded 32,246 people living in Serpentine-Jarrahdale, across 13 suburbs.

What suburbs are in Serpentine-Jarrahdale?

Serpentine-Jarrahdale contains 13 suburbs. The most populous are Byford, Serpentine, Oakford, Darling Downs, Mundijong.See the full list in the Suburbs section above.

What postcodes are in Serpentine-Jarrahdale?

Serpentine-Jarrahdale covers 6 postcodes: 6121, 6122, 6123, 6124, 6125, 6126.

What is the median household income in Serpentine-Jarrahdale?

The population-weighted median household income across Serpentine-Jarrahdale is $2,115 per week (2021 Census), ranking #16 of 123 WA LGAs.

How many schools are in Serpentine-Jarrahdale?

Serpentine-Jarrahdale has 13 schools, including 9 government, 1 Catholic, and 3 independent schools (ACARA 2025).

What is the SEIFA score for Serpentine-Jarrahdale?

Serpentine-Jarrahdale has a population-weighted SEIFA IRSAD score of 995, where the national average is 1000. Higher scores indicate more relative advantage.

Page last reviewed June 2026. Data sources: Australian Bureau of Statistics 2021 Census (CC BY 4.0), SEIFA 2021 (IRSD, IRSAD, IER, IEO), ACARA School Profiles 2025, ABS ASGS 2021 LGA boundaries. How this data is sourced.