Seattle Population 2024 Estimate 2024. From july 1, 2022, to july 1, 2023, seattle’s population increased by around 5,900, according to data released thursday by the u.s. The county’s population hit 2.35 million in 2023.

The city’s growth rate for the year. The census bureau’s population estimates program (pep) produces estimates of the population for the united states, states, metropolitan and micropolitan statistical areas,.