Example image of eyePlorer eyePlorer map for 'King County, Washington': U.S. state Washington List of the most populous counties in the United States Seattle Suburb Highest-income counties in the United States 1852 Alabama December 22 Franklin Pierce Oregon Territory Thurston County, Washington William R. King 1853 January 11 Olympic Peninsula Bill Speidel David Swinson Maynard Kitsap County, Washington 1986 February 24 King County Council Martin Luther King, Jr. 2005 April 19 Christine Gregoire 2006 February 27 Larry Gossett 2007 March 12 King County Executive Dan Satterberg King County Superior Court King County Courthouse United States Congress Bastion Democratic Party (United States) Pete von Reichbauer Barack Obama John McCain United States presidential election, 2008 Maria Cantwell Republican Party (United States) Slade Gorton United States Senate Dino Rossi Washington gubernatorial election, 2004 Auburn, Washington Sammamish, Washington