The range forecast aids Metro in the analysis of capacity within the existing urban growth boundary to accommodate forecast population and employment growth. The latest capacity analysis, the Urban Growth Report, was published in 2009.
The forecasts encompass the seven-county Portland-Beaverton-Vancouver Primary Metropolitan Statistical Area as defined by the federal Office of Management and Budget:
- all of Multnomah, Clackamas, Washington, Yamhill and Columbia counties in Oregon
- Clark and Skamania counties in Washington.