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At June 2015, the estimated resident population of Western Australia (WA) was 2.59 million people. WA's population increased by 299,400 people, or 13%, in the five years to 2015. This was the fastest growth of all states and territories.
Over three quarters (79%) of the state’s population lived in Greater Perth in 2015. In the five years to 2015, the population in Greater Perth increased by 258,100 to reach 2.04 million. Over the same period, the rest of WA increased by 41,400 people to reach 551,100.
The population of each SA3 in WA grew between 2010 and 2015. The fastest-growing SA3s were Serpentine - Jarrahdale (up by 40%), Armadale (30%), and Kwinana (28%), all located in Greater Perth.
AGE AND SEX DISTRIBUTION
In 2015, Greater Perth had a higher proportion of its population aged 15 to 34 years (30%) compared with the rest of WA (26%). This is consistent with young adults moving to the capital city for employment or education purposes.
The rest of WA had a higher proportion of 35 to 74 year olds (48%) compared with Greater Perth (45%).
Footnote(s): (a) 85 years and over not shown
Source(s): Population by Age and Sex, Regions of Australia, 2015 (cat. no. 3235.0)
AGE AND SEX DISTRIBUTION (%), Western Australia - 30 June 2015
Roebuck (28.2 years) in the state’s far north had the lowest median age in the state, followed by Seville Grove (29.0) and Clarkson (29.4) in Greater Perth.
CHILDREN (UNDER 15 YEARS OF AGE)
POPULATION AGED LESS THAN 15 YEARS, Statistical Areas Level 2, Western Australia - 30 June 2015
WORKING AGE POPULATION (AGED 15-64 YEARS)
WORKING AGE POPULATION (AGED 15-64 YEARS), Statistical Areas Level 2, Western Australia - 30 June 2015
PEOPLE AGED 65 YEARS AND OVER
There were 340,200 people aged 65 years and over in WA at June 2015, representing 13% of the state’s population. Almost four fifths (79%) of people aged 65 years and over lived in Greater Perth.
Mandurah - South was the SA2 with the highest proportion of people aged 65 years and over in WA, at 29%. The adjoining SA2s of Mandurah - East (24%) and Greenfields (23%) also had high proportions. Outside of Greater Perth, York - Beverley in the northern wheatbelt and Albany in the state's south had the highest proportions (both 24%).
The SA2 with the highest sex ratio in Australia was East Pilbara (358.9) in WA's northern mining region. Other SA2s in WA with high sex ratios included Roebourne (243.5), Ashburton (238.9), Meekatharra (203.5), Leinster - Leonora (194.4) and Murray (182.2), which are all located in areas of significant mining activity in regional WA, and Casuarina - Wellard (East) (220.5) and Chidlow (187.9), which both contain large male prison facilities.
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