Which counties in WA are growing the most? Here’s what new Census data says

Washington state’s population has been on a steady increase for several decades .

It passed 8 million in 2024, according to the Washington State Office of Financial Management , and projections expect the state population will exceed 9.8 million by 2050.

But where is this growth occurring most ? You might think it’s all in Seattle, but Washington’s population growth spans the state.

Where are WA’s new residents?

New data from the Census Bureau shows that there has been growth in nearly every county.

Only two counties had a decrease in residents, Island County (381 fewer residents) and Walla Walla County (519 fewer residents).

Since April 2020, Washington’s total population has increased by 250,594 people. More than 100,000 of them came to Washington between July 2023 an