SA4s in region:
Published: December 2025
Version: 5.2.2
Read forecast analysis and insights for the Perth - South West region from Australia's largest independent population forecasting team.

Our premium services give you detailed forecast information for this region to help you invest in the right place, at the right time.

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Read our forecast results and analysis for Western Australia to learn more about how the different drivers of population change affect the distribution of growth throughout the state.
The population forecast for Western Australia
Our National Forecasting Program is the backbone of all of our forecasting products and services for government and business.

Our Government Toolkit gives users access to the proprietary datasets maintained by .id through a suite of intuitive online tools.
See the National Forecasting Program in action in our Population Forecast online tool, or get in touch.
Our Government Toolkit gives users access to the proprietary datasets maintained by .id through a suite of intuitive online tools.
See the National Forecasting Program in action in our Population Forecast online tool, or get in touch.

Our Government Toolkit gives users access to the proprietary datasets maintained by .id through a suite of intuitive online tools.
See the National Forecasting Program in action in our Population Forecast online tool, or get in touch.

The following forecast information presents the numbers for the Perth - South West Region.
Learn more about the different options to access these forecasts for Local Government Areas (LGAs), suburbs, custom catchments or the entire state or nation here.
| 2021 | 2026 | 2031 | 2036 | 2041 | 2046 | |
|---|---|---|---|---|---|---|
| Forecast Population | 458,974 | 526,706 | 575,365 | 618,598 | 659,356 | 698219 |
| Change (five year) | - | 67,732 | 48,660 | 43,233 | 40,758 | 38,863 |
| Average Annual Change (%) | - | 2.79% | 1.78% | 1.46% | 1.28% | 1.15% |
| Forecast Dwellings | 182,962 | 197,530 | 217,683 | 239,850 | 262,269 | 284,487 |
| Change (five year | - | 14,569 | 20,153 | 22,167 | 22,418 | 22,219 |
| Average Annual Change (%) | - | 1.54% | 1.96% | 1.96% | 1.8% | 1.64% |
Prepared and presented by experts from Australia's largest independent population forecasting team.

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