King County, Washington

King County: County in the state of Washington, United States

About

King County is a county located in the U.S. state of Washington. As of the 2010 census, the population was 1,931,249 and a population density of 323 people per km². After 10 years in 2020 county had an estimated population of 2,274,315 inhabitants. Its county seat is Seattle. The county was created 172 years ago in 1852.

King County locator map
Location of King County on Washington map.

Quick Facts about King County

Population : 2,274,315 (2020)
Country : United States of America
State : Washington (United States)
Different from : King County, Kings County, Kings County
Twitter username : kingcountywa
Area : 5974 km2
Has part : Seattle
Water as percent of area : 8.3%
Land as percent of area : 91.7%
Legislative body : King County Council
Named for : William R. King, Martin Luther King Jr.
Altitude : 2,969 feet / 905 meters
Capital : Seattle
Establishment : December 12, 1852
Time Zone : Pacific Time Zone
Local time : 23:48:00 (29th April 2025)
Density : 381 Pop. per km² as of 2020
Population growth : 15.08% (2010-2020)
Seattle - City Hall Park %26 King County Courthouse 01 image
Seattle - City Hall Park %26 King County Courthouse 01
Seattle - City Hall Park %26 King County Courthouse 01 image
Seattle - City Hall Park %26 King County Courthouse 01 image

Geography

King County is located at 47°29'27"N 121°50'9"W (47.4908400, -121.8358300). It has 6 neighbors: Chelan County, Kitsap County, Kittitas County, Pierce County, Snohomish County and Yakima County.

King County map

Click "full screen" full screen map icon to open full mode. View satellite images

The largest city of King County is Seattle with a population of 769,714. Other cities include, Bellevue population 148,073, Kent population 130,676, Renton population 101,494 and Federal Way population 96,307. See all King County cities & populated places.

King County Populated Places (more)

Cities, towns, neighborhoods & other populated places in King County.

City Name Population Title
Seattle 769,714 The eighteenth most populous city in the United States and the center of the Seattle metropolitan area.
Bellevue 148,073 The most populous city in Washington.
Kent 130,676 The fourth most populous city in King County, Washington.
Renton 101,494 The second most populous city in King County, Washington.
Federal Way 96,307 A city in King County, Washington.
Kirkland 95,431 A city in King County, Washington.
Auburn 81,024 The second most populous city in Pierce County, Washington.
Redmond 72,507 The second most populous city in King County, Washington.
Sammamish 65,960 Town
Shoreline 58,197 Town in Washington
Burien 51,268 Town in Washington, United States
Bothell 47,524 A city in King County, Washington.
Issaquah 39,681 A city in King County, Washington.
West Lake Sammamish 33,929 Census designated place
Des Moines 32,389 City in Washington
SeaTac 28,904 Airport in SeaTac, Washington, USA

King County has 6 neighbours.

  • Seattle

Demographics

The population of King County increased by 15.08% in 10 years.

Year Population % Change Method
1860 302 - estimation process
1870 2,120 85.75% estimation process
1880 6,910 69.32% census
1890 63,989 89.2% estimation process
1900 110,053 41.86% census
1910 284,638 61.34% estimation process
2010 1,931,249 85.26% census
2011 1,974,200 2.18% estimation process
2012 2,011,197 1.84% estimation process
2013 2,047,223 1.76% estimation process
2014 2,085,225 1.82% estimation process
2015 2,126,178 1.93% estimation process
2016 2,166,350 1.85% estimation process
2017 2,203,836 1.7% estimation process
2018 2,228,364 1.1% estimation process
2019 2,252,782 1.08% estimation process
2020 2,274,315 0.95% estimation process
Map of countries with a smaller population than King County

Comitatul King, Comte de King, Comté de King, Condado de King, Condado han King, Contea di King, Hrabstwo King, Kantono King, King, King Kun, King Kūn, King konderria, King megye, Kingi maakond, Okres King, Okrug King, Quan King, Quận King, jin xian, kim ka'unti, king gun, kingu jun, mhwz qyng, mqatʿt kyngh, shhrstan kyng washyngtn, Кинг, Кінґ, Округ Кинг, מחוז קינג, شهرستان کینگ، واشینگتن, مقاطعة كينغ, کنگ کاؤنٹی، واشنگٹن, কিং কাউন্টি, キング郡, 金县, 킹 군

People born in King County (10)

People born in King County, including writer Cooper Edens, psychologist David F. Tolin, baseball player Johnny Lazor, .

List

  • Larry Phillips (Local politician in King County, Washington, USA) he was born in 15/03/1951
  • Tally Hall (American soccer player) he was born in 12/05/1985
  • Joe Fain (Washington politician) he was born in 01/01/1950
  • John Wilson Lewis (American political scientist) he was born in 01/01/1930
  • Emma Otis she was born in 22/10/1901
  • Jalen McDaniels (American basketball player) he was born in 31/01/1998
  • Jean Horning Marburg (Alaskan mining engineer) she was born in 15/12/1913

Other places with the same name (2)

Washington Other Counties (more counties)

County Name Population Title
Pierce County 913,890 County in the state of Washington, United States
Snohomish County 830,393 County in the state of Washington, United States
Seattle 769,714 The eighteenth most populous city in the United States and the center of the Seattle metropolitan area.
Spokane County 528,225 County in the state of Washington, United States
Clark County 496,865 County in Washington, United States
Thurston County 294,074 County in the state of Washington, United States
Kitsap County 272,787 County in the state of Washington, United States
Yakima County 251,879 County in the state of Washington, United States
Whatcom County 231,016 County in the state of Washington, United States
Spokane 222,050 The second most populous city in Washington.
Tacoma 219,945 The third most populous city in Washington.
Benton County 206,426 County in Arkansas, United States
Vancouver 186,192 The third most populous city in Washington.
Bellevue 148,073 The most populous city in Washington.
Skagit County 130,789 County in the state of Washington, United States
Kent 130,676 The fourth most populous city in King County, Washington.