Population 2010

1,931,249

Population 2020

2,269,675

Registered Voters

1,420,898.

Republicans

22%

Democrat

75.0%

Minor Party

No Party

1.7%

Municipalities

City Name Population
Algona3290
Auburn87,256
Bellevue151,854
Black Diamond4.697
Bothell48,161
Burien52,066
Carnation2,158
Clyde Hill2,984
Covington20,777
Des Moines32,888
Duvall8,034
Enumclaw12,543
Federal Way101,030
Issaquah40,051
Kenmore20,460
Kent136,588
Kirkland92,175
Lake Forest Park13,358
Maple Valley28,013
Medina2,969
Mercer Island25,748
Milton8,967
Newcastle12,292
Normandy Park6,771
North Bend7,136
Pacific7,235
Redmond73,256
Renton106,785
Sammamish67,455
SeaTac31,454
Seattle737,015
Shoreline56,608
Snoqualmie13,622
Tukwila21,798
Woodinville13,425
Beaux Arts Village299
Hunts Point449
Yarrow Point1,001
Skykomish159

Superintendent of Schools

Treasurer / Tax Collector

County Commission

District 1Rod Dembowski
District 2Girmay Zahilay
District 3 Sarah Perry
District 4Jeanne Kohl-Welles
District 5Dave Upthegrove
District 6Claudia Balducci
District 7Pete von Reichbauer
District 8Joe McDermott
District 9Reagan Dunn

School Board

Brief Political History

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 state's most populous city.

King County is represented in the United States Congress through a near-entirety of the population in the 7th and 9th Congressional Districts, a majority of the population in the 8th Congressional District and a plurality of the population in the 1st Congressional District. In the state legislature, King contains the entirety of the 5th, 11th, 33rd, 34th, 36th, 37th, 41st, 43rd, 45th, 46th, 47th, and 48th legislative districts as well as the near-entirety of the 30th legislative district, about one-half of the 32nd legislative district, about one-third of the 1st and 31st legislative district, and a mere 627 people in the 39th legislative district. The only legislative districts represented by Republicans that include any part of King County are the 31st and 39th districts.[citation needed]

The people of King County voted on September 5, 1911, to create a Port District. King County's Port of Seattle was established as the first Port District in Washington State. The Port of Seattle is King County's only Port District. It is governed by five Port Commissioners, who are elected countywide and serve four-year terms. The Port of Seattle owns and operates many properties on behalf of King County's citizens, including Sea-Tac International Airport; many seaport facilities around Elliott Bay, including its original property, publicly owned Fishermen's Terminal, home to the North Pacific fishing fleet and the largest homeport for fishermen in the U.S. West Coast;[citation needed] four container ship terminals; two cruise ship terminals; the largest grain export terminal in the U.S. Pacific Northwest; three public marinas; 22 public parks; and nearly 5,000 acres of industrial lands in the Ballard-Interbay and Lower Duwamish industrial centers.

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