3235.0 - Regional Population by Age and Sex, Australia, 2018 Quality Declaration 
Latest ISSUE Released at 11:30 AM (CANBERRA TIME) 29/08/2019   
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Western Australia

Median age

At June 2018, Western Australia (WA) had a median age (the age at which half the population is older and half is younger) of 36.9 years, up from 35.9 years at June 2013.

In the five years to June 2018, the median age of the population in Greater Perth increased from 35.5 to 36.4 years. Over the same period, the median age increased from 37.3 to 39.0 years in the rest of WA.

The Statistical Areas Level 2 (SA2s) with the highest median ages in 2018 were popular retirement and tree-change/sea-change locations, including:

  • York - Beverley (52.3 years) and Toodyay (51.6) in the northern wheat belt
  • Pemberton (50.4) in the state's south-west

The areas with the lowest median ages were:
  • Roebuck (27.7 years) in the state's far north
  • Halls Creek (28.4) in the Kimberley region

SA2s WITH OLDEST AND YOUNGEST MEDIAN AGES(a), Western Australia, 2018

Median Age
SA2SA4
years

OLDEST MEDIAN AGES

York - BeverleyWestern Australia - Wheat Belt
52.3
ToodyayWestern Australia - Wheat Belt
51.6
PembertonBunbury
50.4
IrwinWestern Australia - Outback (South)
50.3
Bridgetown - Boyup BrookBunbury
49.5

YOUNGEST MEDIAN AGES

RoebuckWestern Australia - Outback (North)
27.7
Halls CreekWestern Australia - Outback (North)
28.4
Alkimos - EglintonPerth - North West
29.0
ByfordPerth - South East
29.8
BaldivisPerth - South West
30.1

(a) Excludes SA2s with less than 1,000 people.


Sex ratio

There was a roughly equal number of males and females in WA at June 2018, with a sex ratio (the number of males per 100 females) of 100.0. The only other state or territory to have a sex ratio of 100.0 or more was the Northern Territory at 107.7.

Females outnumbered males in Greater Perth (with a sex ratio of 98.9), while males outnumbered females in the rest of WA (104.3).

The SA2s with the highest sex ratios in WA were:
  • East Pilbara (292.1 males per 100 females), Ashburton (245.1), Roebourne (161.5) and Meekatharra (150.3), which are all located in areas of significant mining activity
  • Chidlow (228.4), which contains a large male prison facility

The areas with the lowest sex ratios were:
  • Mosman Park - Peppermint Grove (84.6 males per 100 females), an inner suburb of Perth
  • Albany (87.2) in the state's south

SA2s WITH HIGHEST AND LOWEST SEX RATIOS(a), Western Australia, 2018

Sex Ratio
SA2SA4
males per 100 females

HIGHEST SEX RATIOS

East PilbaraWestern Australia - Outback (North)
292.1
AshburtonWestern Australia - Outback (North)
245.1
ChidlowPerth - North East
228.4
RoebourneWestern Australia - Outback (North)
161.5
MeekatharraWestern Australia - Outback (South)
150.3

LOWEST SEX RATIOS

Mosman Park - Peppermint GrovePerth - Inner
84.6
AlbanyWestern Australia - Wheat Belt
87.2
Tuart Hill - JoondannaPerth - North West
87.8
ComoPerth - South East
88.4
East Bunbury - Glen IrisBunbury
88.8

(a) Excludes SA2s with less than 1,000 people.


Age and sex distribution

Greater Perth had a lower proportion of its population aged less than 15 years (19%) compared with the rest of WA (21%) at June 2018.

Conversely, Greater Perth had a higher proportion aged 15 to 34 years (29%) than the rest of the state (24%). This is consistent with young adults moving to the capital city for employment or education purposes.


AGE AND SEX DISTRIBUTION (%), Western Australia - 30 June 2018

Population pyramid showing proportion of population by age and sex in Greater Perth and rest of Western Australia, 30 June 2018