King County posted its strongest growth in nearly a decade last year, according to the data released by the U.S. Census ...

Washington has 39 counties ... The report named King County the wealthiest in the Evergreen State, but nearby Pierce and Thurston counties are also home to high-earning workers.

Near 50,000 customers ... through Western Washington. At about 3:30 p.m., 9,537 customers in Snohomish County, 4,050 customers in Pierce County, and 30,328 customers in King County were powerless.

The combined median sales price in February for single-family homes and condominiums was flat in King County from February ...