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Population in figures | Age of the population | Composition of the households
| Name | Population |
| Sydney | 4,400,000 |
| Melbourne | 3,900,000 |
| Brisbane | 1,920,000 |
| Perth | 1,600,000 |
| Adelaide | 1,170,000 |
| Tweed Heads | 550,000 |
Source: Australian Bureau of Statistics, 2009.
| Life expectancy in years | |
| Men: |
79.0
|
| Women: |
83.7
|
| Medium age: |
36.8
|
Source: Australian Bureau of Statistics, 2007.
| Distribution of the population by age bracket in % | |
| Under 5: |
6.2 %
|
| 5 to 14: |
13.3 %
|
| 15 to 24: |
13.8 %
|
| 25 to 59: |
48.9 %
|
| 60 to 79: |
14.3 %
|
| Over 80: |
3.5 %
|
Source: Australian Bureau of Statistics, 2007
| Average age of the head of the household* | 39.0 years |
| Total number of households (in millions)** | 7.0 |
| Average size of the households** | 2.5 persons |
| Percent of households of 1 person** | 12.4% |
| Percent of households of 2 persons** | 8.6% |
| Percent of households of 3 or 4 persons** | 9.1% |
| Percent of households of 5 persons and more** | -% |
Source: * Australian Bureau of Statistics, 2007; ** Australian Bureau of Statistics, 2007
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Last updates: oct-07.