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LEARN MORE ABOUT .idIn 2021, the largest age group in Greater Melbourne was 30 to 34 year olds. The group that changed the most since 2011 was 30 to 34 year olds, increasing by 104,819 people.
The Age Structure of Greater Melbourne provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of Greater Melbourne'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 Greater Melbourne's Age Structure should be viewed in conjunction with Household Types and Dwelling Types.
Q:
Derived from the Census question:
'What is the person's date of birth or age?'
| Age structure - Five year age groups | |||||||
|---|---|---|---|---|---|---|---|
| Greater Melbourne - Total persons (Usual residence) | 2021 | 2011 | Change | ||||
| Five year age groups (years) | Number | % | Greater Darwin % | Number | % | Greater Darwin % | 2011 to 2021 |
| 0 to 4 | 290,649 | 5.9 | 6.8 | 259,606 | 6.5 | 7.4 | +31,043 |
| 5 to 9 | 307,523 | 6.3 | 7.0 | 241,955 | 6.0 | 6.8 | +65,568 |
| 10 to 14 | 293,410 | 6.0 | 6.4 | 237,583 | 5.9 | 6.8 | +55,827 |
| 15 to 19 | 274,698 | 5.6 | 5.5 | 253,024 | 6.3 | 6.6 | +21,674 |
| 20 to 24 | 328,543 | 6.7 | 6.5 | 299,920 | 7.5 | 7.9 | +28,623 |
| 25 to 29 | 383,135 | 7.8 | 9.0 | 317,216 | 7.9 | 9.1 | +65,919 |
| 30 to 34 | 405,556 | 8.2 | 9.6 | 300,737 | 7.5 | 8.3 | +104,819 |
| 35 to 39 | 395,798 | 8.0 | 8.5 | 300,725 | 7.5 | 8.2 | +95,073 |
| 40 to 44 | 339,303 | 6.9 | 7.3 | 300,673 | 7.5 | 8.0 | +38,630 |
| 45 to 49 | 320,361 | 6.5 | 6.7 | 277,854 | 6.9 | 7.3 | +42,507 |
| 50 to 54 | 308,742 | 6.3 | 6.5 | 257,507 | 6.4 | 6.7 | +51,235 |
| 55 to 59 | 277,976 | 5.7 | 5.7 | 224,679 | 5.6 | 5.7 | +53,297 |
| 60 to 64 | 252,005 | 5.1 | 4.8 | 204,084 | 5.1 | 4.7 | +47,921 |
| 65 to 69 | 215,194 | 4.4 | 3.8 | 154,157 | 3.9 | 2.7 | +61,037 |
| 70 to 74 | 189,829 | 3.9 | 2.9 | 121,416 | 3.0 | 1.7 | +68,413 |
| 75 to 79 | 137,469 | 2.8 | 1.6 | 96,781 | 2.4 | 0.9 | +40,688 |
| 80 to 84 | 97,528 | 2.0 | 0.9 | 78,820 | 2.0 | 0.6 | +18,708 |
| 85 and over | 100,021 | 2.0 | 0.6 | 73,213 | 1.8 | 0.3 | +26,808 |
| Total population | 4,917,740 | 100.0 | 100.0 | 3,999,950 | 100.0 | 100.0 | +917,790 |
Dominant groups
Analysis of the five year age groups of Greater Melbourne in 2021 compared to Greater Darwin shows that there was a lower proportion of people in the younger age groups (under 15) and a higher proportion of people in the older age groups (65+).
Overall, 18.1% of the population was aged between 0 and 15, and 15.0% were aged 65 years and over, compared with 20.2% and 9.9% respectively for Greater Darwin.
The major differences between the age structure of Greater Melbourne and Greater Darwin were:
- A larger percentage of persons aged 85 and over (2.0% compared to 0.6%)
- A larger percentage of persons aged 75 to 79 (2.8% compared to 1.6%)
- A smaller percentage of persons aged 30 to 34 (8.2% compared to 9.6%)
- A smaller percentage of persons aged 25 to 29 (7.8% compared to 9.0%)
Emerging groups
From 2011 to 2021, Greater Melbourne's population increased by 917,790 people (22.9%). This represents an average annual population change of 2.09% per year over the period.
The largest changes in age structure in this area between 2011 and 2021 were in the age groups:
- 30 to 34 (+104,819 persons)
- 35 to 39 (+95,073 persons)
- 70 to 74 (+68,413 persons)
- 25 to 29 (+65,919 persons)
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