https://www.census.gov/quickfacts/seattlecitywashington
Population. Population estimates, July 1, 2019, (V2019) 753,675. Population estimates base, April 1, 2010, (V2019) 608,661. Population, percent change - April 1, 2010 (estimates base) to July 1, 2019, (V2019) 23.8%. Population, Census, April 1, 2020. 737,015.