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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Australia

Capital cities

Median age

At June 2018 the median age (the age at which half the population is older and half is younger) for all greater capital cities combined (35.9 years) was younger than for the rest of Australia (41.1).

Hobart had the oldest median age of all capital cities at 39.7 years, ahead of Adelaide at 38.8.

Darwin was the youngest capital city with a median age of 33.9 years, followed by the Australian Capital Territory at 35.1.

Sex ratio

The sex ratio (the number of males per 100 females) for all greater capital cities combined (98.3) was slightly lower than for the rest of Australia (98.6) at June 2018.

Adelaide had the lowest sex ratio of all capital cities (96.7 males per 100 females), while Darwin had the highest (110.9).

Darwin was the only capital city where males outnumbered females.


SEX RATIOS AND MEDIAN AGES - Greater Capital City Statistical Areas (GCCSAs), 2018

Sex Ratio
Median Age(a)
GCCSA
males per 100 females
years

Greater Sydney
98.9
35.8
Greater Melbourne
97.9
35.6
Greater Brisbane
97.8
35.4
Greater Adelaide
96.7
38.8
Greater Perth
98.9
36.4
Greater Hobart
99.1
39.7
Greater Darwin
110.9
33.9
Australian Capital Territory
98.0
35.1
Total Greater Capital Cities
98.3
35.9
Total Australia
98.4
37.3

(a) The age at which half the population is older and half is younger.

Age and sex distribution

The following graph (called a 'population pyramid') compares the age/sex structure of the population in greater capital cities with the rest of Australia at June 2018. Each dark bar shows the percentage contribution of a sex and five-year age group to the total population of capital cities, while each light bar shows the contribution to the rest of Australia's population. For example, the graph shows that in June 2018, males aged 0 to 4 years made up 3.3% of the population of the combined capital cities compared with 3.1% of the rest of Australia.

People aged 20 to 44 years made up 38% of the combined capital city population, compared with 30% of the population in the rest of Australia. This reflects the attraction of younger adults to education, employment and other opportunities in capital cities.

Older adults aged 45 years and over made up a smaller proportion of the population in capital cities (37%) than in the rest of Australia (45%).

In both capital cities and the rest of Australia, there were higher proportions of females than males in older age groups. The difference was most marked among the population aged 85 years and over, and is due to the longer life expectancy of female Australians.

AGE AND SEX DISTRIBUTION (%), Greater capital cities and rest of Australia - 30 June 2018

Population pyramid showing proportion of people by age and sex in greater capital cities and rest of Australia, 30 June 2018

Females outnumbered males in both capital cities (8.50 million females to 8.36 million males) and the rest of the country (4.09 million females to 4.04 million males).


AGE AND SEX DISTRIBUTION ('000), Greater capital cities and rest of Australia - 30 June 2018

Population pyramid showing number of people by age and sex in greater capital cities and rest of Australia, 30 June 2018


Statistical Areas Level 2

Median age

The Statistical Areas Level 2 (SA2s) with the highest median ages in 2018 were all popular retirement destinations on Australia's coast, including:
  • Tea Gardens - Hawks Nest (62.7 years) and Tuncurry (61.1) in New South Wales
  • Bribie Island (60.0) and Cooloola (59.5) in Queensland

The areas with the lowest median ages were:
  • Acton (21.6 years) and Duntroon (22.3) in the Australian Capital Territory, which had large populations of students or military personnel
  • Yarrabah (22.8) and Northern Peninsula (23.2) in Queensland, which had high proportions of Aboriginal and Torres Strait Islander people

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

Median Age
SA2SA4
years

OLDEST MEDIAN AGES

Tea Gardens - Hawks NestHunter Valley exc Newcastle (NSW)
62.7
TuncurryMid North Coast (NSW)
61.1
Bribie IslandMoreton Bay - North (Qld)
60.0
CooloolaWide Bay (Qld)
59.5
Sussex Inlet - BerraraSouthern Highlands and Shoalhaven (NSW)
59.2

YOUNGEST MEDIAN AGES

ActonAustralian Capital Territory
21.6
DuntroonAustralian Capital Territory
22.3
YarrabahCairns (Qld)
22.8
Northern PeninsulaQueensland - Outback
23.2
St LuciaBrisbane - West
24.2

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


Sex ratio

The SA2s with the highest sex ratios were:
  • Howard Springs (306.3 males per 100 females) in Darwin, which contains the Darwin Correctional Centre
  • East Pilbara (292.1) and Ashburton (245.1) in Western Australia, which are areas with significant mining activity

Areas with low sex ratios often had high proportions of elderly population, reflecting the longer life expectancy of females. The SA2s with the lowest sex ratios included:
  • Deakin (82.0 males per 100 females) in the Australian Capital Territory and Mosman Park - Peppermint Grove (84.6) in Perth, which both also contain boarding schools for girls
  • The Sydney areas of Woollahra (82.4), and Castle Hill - East (84.7) which has a relatively high number of aged care residents

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

Sex Ratio
SA2SA4
males per 100 females

HIGHEST SEX RATIOS

Howard SpringsDarwin
306.3
East PilbaraWestern Australia - Outback (North)
292.1
AshburtonWestern Australia - Outback (North)
245.1
WacolIpswich (Qld)
241.0
DuntroonAustralian Capital Territory
229.2

LOWEST SEX RATIOS

DeakinAustralian Capital Territory
82.0
WoollahraSydney - Eastern Suburbs
82.4
Mosman Park - Peppermint GrovePerth - Inner
84.6
Castle Hill - EastSydney - Baulkham Hills and Hawkesbury
84.7
Millbank - AvocaWide Bay (Qld)
85.1

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