Age structure of the residents Place of usual residence
| Age structure of residents by gender, South West Group 2006 | 2006 |
| Gender | Age group (years) | number | % | City of Melville % |
| Persons | 0 to 4 | 19,237 | 6.3 | 4.9 |
| Persons | 5 to 9 | 20,701 | 6.8 | 5.7 |
| Persons | 10 to 14 | 22,069 | 7.2 | 6.9 |
| Persons | 15 to 19 | 22,430 | 7.3 | 8.2 |
| Persons | 20 to 24 | 21,052 | 6.9 | 7.6 |
| Persons | 25 to 34 | 38,895 | 12.7 | 10.1 |
| Persons | 35 to 44 | 46,746 | 15.3 | 13.5 |
| Persons | 45 to 54 | 43,587 | 14.2 | 15.9 |
| Persons | 55 to 64 | 32,511 | 10.6 | 11.8 |
| Persons | 65 to 74 | 20,762 | 6.8 | 7.2 |
| Persons | 75 to 84 | 14,051 | 4.6 | 6.0 |
| Persons | 85 and over | 4,459 | 1.5 | 2.1 |
| Persons | Total | 306,500 | 100.0 | 100.0 |