Seattle is in the US.
Seattle . In July 2013 , it was the fastest-growing major city in the United States and remained in the Top 5 in May 2015 with an annual growth rate of 2.1 % . In July 2016 , Seattle was again the fastest-growing major U.S. city , with a 3.1 % annual growth rate . Washington ( [ ˈwɒʃɪŋtən ] ) is a state in the Pacific Northwest region of the United States located north of Oregon , west of Idaho , and south of the Canadian province of British Columbia on the coast of the Pacific Ocean .