Blacktown population 2026,Castle Hill population 2026,Auburn population 2026,baulkham hills population 2026,Norwest population 2026,Bankstown population 2026,Greenacre population 2026
While it is a 2026 forecast only, the following Sydney suburbs or Statistical Areas (SA2s) are among those with the largest total populations, indicating they are generally the biggest population centres:
| Suburb/Area Name | Approx. 2026 Population | Notes |
| Blacktown | approx 47,600 | Consistently one of Australia’s largest suburbs by population. |
| Castle Hill | approx 39,200 | A major centre in The Hills District. |
| Auburn | approx 36,600 | Located in Western Sydney. |
| Baulkham Hills | approx 36,300 | Also in The Hills District. |
| Norwest | approx 36,300 | Major area of growth and development. |
| Bankstown | approx 32,300 | A significant centre in South-Western Sydney. |
| Greenacre | approx 32,300 | Located in the Canterbury-Bankstown region. |