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King County King County is located in the U.S. state of Washington. The population was 2,269,675 in the 2020 census, making it the most populous county in Washington, and the 13th-most populous in the United States. The county seat is Seattle, also the st ...

is a county in Washington State that includes the city of Seattle. King County may also refer to:

Places

King County, Texas King County is a county located in the U.S. state of Texas. As of the 2020 Census, its population was 265, making it the second-smallest county in Texas and the third-smallest county in the United States. King County has no incorporated communi ...

, United States *

King County, New South Wales King County was one of the original Nineteen Counties in New South Wales and is now one of the 141 cadastral divisions of New South Wales. It is in the area to the east of Yass. The northern part of it lies between the Lachlan River and the Boo ...

, Australia

Ship

* ''King County'' (steam ferry), which operated on Lake Washington, Washington, United States, from 1900 to 1907 or 1908 {{disambig, county