The median age is defined as the age at which half the population is older and half is younger.
The sex ratio is defined as the number of males per 100 females.
Any reference to capital city refers to Greater Capital City Statistical Area (GCCSA), and any reference to area refers to Statistical Area Level 2 (SA2).
Regional population by age and sex
Statistics about the population by age and sex for Australia's capital cities and regions
Key statistics
- The median age for capital cities (36.0 years) was younger than the rest of Australia (41.2).
- The oldest capital was Hobart with a median age of 39.6 years, while Darwin was the youngest (34.3).
- Darwin was the only capital with more males than females.
Capital cities
- People aged 20 to 49 years made up 45% of the combined capital city population, compared with 36% of the population in the rest of Australia.
- People aged 50 years and over made up a smaller proportion of the population in capital cities (31%) than in the rest of Australia (39%).
- In both capital cities and the rest of Australia, there were higher proportions of females than males in the older age groups.
Median age and sex ratio
- Hobart had the oldest median age of all capital cities at 39.6 years, ahead of Adelaide at 38.8.
- Darwin was the youngest capital city with a median age of 34.3, followed by Canberra at 35.4.
- Adelaide had the lowest sex ratio of all capital cities (96.7 males per 100 females), while Darwin had the highest (109.9).
Capital city | Median Age (years) | Sex ratio |
---|---|---|
Sydney | 35.8 | 98.9 |
Melbourne | 35.6 | 98.1 |
Brisbane | 35.6 | 97.6 |
Adelaide | 38.8 | 96.7 |
Perth | 36.7 | 98.7 |
Hobart | 39.6 | 99.1 |
Darwin | 34.3 | 109.9 |
Canberra | 35.4 | 97.8 |
Total capital cities | 36.0 | 98.4 |
Total Australia | 37.4 | 98.4 |
Regions
Median age
The areas with the oldest median ages were all popular retirement destinations on the coast including:
- Tea Gardens - Hawks Nest (63.0 years) and Tuncurry (61.2) in New South Wales
- Bribie Island and Cooloola (both 60.6) in Queensland
The areas with the youngest median ages were:
- Acton (21.9 years) and Duntroon (22.6) in the Australian Capital Territory, which had large populations of students or military personnel
- Yarrabah (22.8) and Northern Peninsula (23.4) in Queensland, which had high proportions of Aboriginal and Torres Strait Islander peoples
Areas with the oldest median ages
Areas with the youngest median ages
Sex ratio
The areas with the highest sex ratios were:
- Howard Springs (306.2 males per 100 females) in Darwin and Wacol (250.2) in Ipswich, which both contain correctional centres for men
- East Pilbara (289.5) and Ashburton (243.2) in Western Australia, which are areas with significant mining activity
The areas with the lowest sex ratios were:
- Deakin (80.8 males per 100 females) in the Australian Capital Territory which contains a boarding school for girls
- Woollahra (81.0) in Sydney and Bowral (84.1) in the Southern Highlands of New South Wales, which both have older age profiles and reflect the longer life expectancy of females
Areas with the highest sex ratios
Areas with the lowest sex ratios
New South Wales
- Greater Sydney had a younger age distribution than the rest of New South Wales, reflecting the pattern of young adults moving to capital cities for education and work purposes.
- People aged 20 to 39 years made up 32% of Sydney's population, compared with 23% in the rest of the state.
- People aged 60 years or over made up 19% of Sydney's population, compared with 27% in the rest of New South Wales.
Median age
Sex ratio
Victoria
- Greater Melbourne had a younger age distribution than the rest of Victoria, as younger adults tend to migrate out of regional areas to pursue work and education in the capital city.
- People aged 20 to 44 years made up 39% of the population in Melbourne, compared with 29% in the rest of the state.
- There was a lower proportion of people aged 50 years and over in Melbourne (30%) than in the rest of Victoria (41%).
Median age
Sex ratio
Queensland
- Greater Brisbane had a higher proportion of its population aged 20 to 44 years (37%) than the rest of Queensland (31%), reflecting the pattern of young adults moving to capital cities for work and education purposes.
- In contrast, Brisbane had a lower proportion aged 45 years and over (37%) than the rest of the state (43%).
Median age
Sex ratio
South Australia
- Greater Adelaide had a younger age distribution than the rest of South Australia.
- People aged 20 to 39 years made up 28% of the population in Adelaide, compared with 21% in the rest of the state. This is indicative of young adults moving to the capital city for employment or education purposes.
Median age
Sex ratio
Western Australia
- The proportion of children aged less than 15 years in Greater Perth (19%) was similar to that in the rest of Western Australia (20%).
- Perth had a higher proportion of its population aged 15 to 34 years (28%) than the rest of the state (23%). This is consistent with young adults moving to the capital city for employment or education purposes.
Median age
Sex ratio
Tasmania
- Tasmania had a lower proportion of people aged 20 to 44 years (30%) than Australia (35%) as a whole. This in part reflects young adults pursuing education and employment opportunities interstate.
- Tasmania also had a higher proportion of people aged 45 years and over (47%) than Australia (40%). This partly reflects a trend of adults in this age group moving into the state.
Median age
Sex ratio
Northern Territory
- Greater Darwin had a lower proportion of its population under 25 years of age (32%) compared with the rest of the Northern Territory (38%).
- Darwin had a higher proportion of people aged 50 years and over (26%) than the rest of the Northern Territory (23%).
Median age
Sex ratio
Australian Capital Territory
- The proportion of young adults in the Australian Capital Territory was relatively high compared with Australia as a whole, reflecting the number young adults who move to the territory for education or employment.
- People aged 20 to 39 years accounted for 33% of the territory's population, compared with 29% of Australia's population.
Median age
Sex ratio
Interactive map
How to use
- Navigating topics: maps can be selected via the drop-down menu (mobile devices) or the tabs (larger screens).
- Search: the magnifying glass icon opens the search function. It is set to look for locations such as addresses, suburbs and postcodes contained within an SA2 or LGA.
- Data: on each map, an SA2 or LGA region can be selected to view the underlying data. Data for all SA2s and LGAs can be found in the Downloads section of this publication.
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More information
- Statistical Area Level 2 boundaries are presented according to the Australian Statistical Geography Standard (ASGS), 2016. Local Government Area boundaries are the standard geographical areas of incorporated local government councils. For more information see the Statistical Geography page of the ABS website or the following: Australian Statistical Geography Standard, Volume 1 - Main Structure and Greater Capital City Statistical Areas, July 2016 (cat. no. 1270.0.55.001); Australian Statistical Geography Standard, Volume 3 - Non-ABS Structures, July 2019 (cat. no. 1270.0.55.003).
- Detailed data information is available in the Methodology.
Data downloads
Data cubes
Population estimates by age and sex, by SA2, 2019
Population estimates by age and sex - summary statistics, by SA2 and above, 2014 and 2019
Population estimates by age and sex, by LGA, 2019
Population estimates by age and sex - summary statistics, by LGA, 2019
Geopackages
Population estimates by age and sex, by SA2, 2019, in GeoPackage
Population estimates by age and sex, by LGA, 2019, in GeoPackage
Previous catalogue number
This release previously used catalogue number 3235.0.