Executive Summary: Every Person Counts: Planning for WA’s future population

Executive Summary

To understand and prepare for Western Australia’s future, we must look beyond headline population counts and examine the forces that shape how, where and why the state grows.

Population change is not just a demographic outcome. It reflects economic opportunity, migration flows, housing, infrastructure investment and policy choices. When these forces align, population growth strengthens productivity, economic progress and the welfare of communities. When they do not, pressures emerge across housing, infrastructure and services, constraining opportunity and eroding confidence.

This twentieth report in the BCEC’s Focus on Western Australia series examines the state’s population story through that wider lens. It asks a set of fundamental questions. What is driving WA’s population growth, and how predictable are those drivers? How do migration, economic cycles and housing capacity shape the state’s demographic trajectory? Why do some regions grow while others struggle to sustain population? And what do these patterns mean for planning, productivity and long term prosperity?

This report draws on new empirical analysis to better understand these dynamics. Using multiple data sources and advanced modelling, we link population outcomes to their economic drivers, identify leading indicators of migration and population change, and explore how different economic and policy scenarios could shape Western Australia’s future growth. The analysis moves beyond trend-based projections to capture how migration responds to labour markets, investment and housing, and how these forces affect population growth over time.

A clear message emerges. Population growth in Western Australia is neither fixed nor inevitable. It is responsive, cyclical and policy sensitive.

Economic opportunity attracts people, housing availability shapes settlement, infrastructure directs growth, and participation patterns influence sustainability. Regional outcomes depend on coordinated investment in jobs, services and housing, reinforcing the importance of evidence-based planning and policy.

Key Findings

• Migration is a critical driver of economic growth in WA and has materially improved the state’s economic prosperity
• New modelling links iron ore prices and mining investment to population growth
• Indigenous population change in WA is spatially uneven and life-course driven
• WA needs to plan for 4 million residents by 2043
• Housing supply identified as a binding constraint on sustainable growth

Read the full report