seattle wa us population
Population of Seattle, WA. Last official estimated population of Seattle city (King County**, Washington state) was 668,342 (year 2014)[1]. This was 0.21% of total US population and 9.32% of total Washington state population. Area of Seattle city is 142.7 miÂ² (=369.5 kmÂ²)[6], in this year population density was 4,685.06 p/miÂ².