According to new data from the Washington State Office of Financial Management, Washington’s population continued to grow over the past year, reaching 8.2 million as of April 1, 2026.
Population growth slows but continues to support apartment demand in Washington State
In-migration remains primary source of growth as multifamily housing dominates new development
CoStar Analytics
July 6, 2026 | 3:20 P.M.
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