Seattle Metro Population 2024. Seattle is currently growing at a rate of 0.64% annually and its population has increased by 2.61% since. Sultan in snohomish county had the fastest rate of growth of any place in the seattle metro area from 2023 to 2024, increasing in population by more than 6%.
It is also the county seat of king county. Seattle’s population grew from 572,587 in 2005 to 797,700 in ofm’s april 1, 2024 estimate.