Seattle Population 2024 Growth Rate Of Population. 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%. Seattle’s population grew from 572,587 in 2005 to 797,700 in ofm’s april 1, 2024 estimate.

Seattle has a 2024 population of 759,915. Seattle’s population grew by 21% to 737,015 people and king county swelled by more than 300,000 residents since 2010, according to new u.s.