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2016 Census data has been released and we are busy processing it to update this website. View our latest releases here.


Five year age groups

This topic has been updated with 2016 Census data for all areas. What's this?

There were 486,847 people over the age of 85 living in Australia in 2016, with largest age group being 30 to 34 year olds.

The Age Structure of Australia provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of Australia's residential role and function and how it is likely to change in the future.

Five year age groups present a classic age profile of the population. Each age group covers exactly five years, which enables direct comparison between each group.

To get a more complete picture Australia's Age Structure should be viewed in conjunction with Household Types and Dwelling Types.


Derived from the Census question:

'What is the person's date of birth or age?'

Age structure - Five year age groups
Australia - Total persons (Usual residence)20162011Change
Five year age groups (years)Number%Greater Capital Cities %Number%Greater Capital Cities %2011 to 2016
0 to 41,464,7766.36.41,420,9136.66.6+43,863
5 to 91,502,6446.46.41,351,7376.36.2+150,907
10 to 141,397,1826.05.91,370,8756.46.2+26,307
15 to 191,421,6126.16.11,405,6256.56.5+15,987
20 to 241,566,7926.77.21,460,4076.87.3+106,385
25 to 291,664,6097.17.81,512,7957.07.7+151,814
30 to 341,703,8527.38.01,453,4606.87.3+250,392
35 to 391,561,6866.77.11,519,9187.17.4+41,768
40 to 441,583,2546.87.01,542,6687.27.3+40,586
45 to 491,581,4606.86.81,503,9307.07.0+77,530
50 to 541,523,5576.56.31,447,1846.76.5+76,373
55 to 591,454,3326.25.81,297,0546.05.7+157,278
60 to 641,299,4065.65.11,205,9675.65.2+93,439
65 to 691,188,9895.14.5919,2524.33.9+269,737
70 to 74887,7213.83.4708,0403.33.0+179,681
75 to 79652,6712.82.5545,2442.52.3+107,427
80 to 84460,5552.01.8436,9142.01.9+23,641
85 and over486,8472.12.0402,7081.91.8+84,139
Total population23,401,945100.0100.021,504,691100.0100.0+1,897,254
Source: Australian Bureau of Statistics, Census of Population and Housing 2011 and 2016. Compiled and presented by .id , the population experts.

Please refer to specific data notes for more information

Dominant groups

Analysis of the five year age groups of Australia in 2016 compared to Greater Capital Cities shows that there was a similar proportion of people in the younger age groups (under 15) and a higher proportion of people in the older age groups (65+).

Overall, 18.7% of the population was aged between 0 and 15, and 15.7% were aged 65 years and over, compared with 18.6% and 14.2% respectively for Greater Capital Cities.

The major differences between the age structure of Australia and Greater Capital Cities were:

  • A larger percentage of persons aged 65 to 69 (5.1% compared to 4.5%)
  • A smaller percentage of persons aged 30 to 34 (7.3% compared to 8.0%)
  • A smaller percentage of persons aged 25 to 29 (7.1% compared to 7.8%)

Emerging groups

From 2011 to 2016, Australia's population increased by 1,897,254 people (8.8%). This represents an average annual population change of 1.71% per year over the period.

The largest changes in age structure in this area between 2011 and 2016 were in the age groups:

  • 65 to 69 (+269,737 persons)
  • 30 to 34 (+250,392 persons)
  • 70 to 74 (+179,681 persons)
  • 55 to 59 (+157,278 persons)