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Description

The City of Portland captured most growth in the tri-county area, and in the Willamette Valley as a whole, through the 1920s. Portland’s population levelled off after the 1940s, as most growth flowed to other parts of Multnomah, Clackamas, and Washington Counties, and in other communities to the south.

Publication Date

5-22-2019

Sources

Source: United States Census of Population, various years.

Figure 7.1 Portland population by zone, 1860-2010.pdf

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