Between 2010 and 2017, inmigration to the Puget Sound region accounted for an average 62.42% of total inmigration to the state.
Within the Puget Sound region, King County, which is home to both Amazon and Microsoft headquarters, accounts for a larger share of inmigration than any other county in the region. King County accounted for an average 56.29% of inmigration to the Puget Sound region annually between 2010 and 2017.