Median Household Income Estimates by County: 1989 to 2021; Preliminary estimates for 2022 and Projection for 2023

Manufacturing employment as a percent of total, 1980

• State average: 17.8%
• Highest county: Wahkiakum at 37.5%
• Lowest county: Whitman at 1.6%

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Per Capita Personal Income, 1980

Inflation-Adjusted to 2022 Dollars

Population change

In accordance with RCW 43.62.035, the Office of Financial Management shall determine the percentage increase in population for each county over the preceding ten-year period, as of April 1.

Included here are documents describing the process of GMA projections.