New U.S. Census Bureau estimates reveal that Washington state ranked among the fastest-growing states in the nation from July 1, 2024, to July 1, 2025, driven by gains in natural increase, domestic migration, and international migration.

Washington’s population climbed to 8,001,020—crossing the 8 million mark for the first time—a numeric gain of approximately 73,062 residents over the year. That rise placed Washington sixth among all states for numeric growth. In percentage terms, the state grew by 0.9%, ranking seventh fastest nationally—well above the national average of just 0.5% during the same period. These findings are based on the latest Census Bureau estimates. According to the regional analysis by the Spokesman-Review, Washington’s growth stemmed from a combination of natural change (about 17,000), domestic migration (~9,000), and international migration (~46,000).

By comparison, only five other states—Texas, Florida, North Carolina, Georgia, and South Carolina—recorded larger numeric population increases, while South Carolina (1.5%), Idaho (1.4%), and North Carolina (1.3%) led the nation in percentage growth. Washington’s combined numeric and percentage growth underscores its continued attractiveness despite national deceleration in population gains.

This growth matters locally because crossing the 8 million threshold heightens pressure on infrastructure, housing, and public services across western Washington, especially in fast-growing counties like King, Clark, and Spokane. The trend spotlights the need for long‑term planning by local governments and regional agencies to manage growth equitably and sustainably.

Why this matters: As Washington continues to outpace national growth rates, local leaders must address the implications. Growth can expand the tax base and economic vitality—but only if translation into adequate infrastructure, affordable housing, and public service expansion keeps pace. Disparities in growth across urban and rural counties also risk widening inequalities within the state.

Further details are available in the U.S. Census Bureau’s full Vintage 2025 Population Estimates Program data release and analysis by the Office of Financial Management’s 2025 population report.

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