List of counties in Washington
There are 39 counties in the U.S. state of Washington. Washington came from the western part of Washington Territory. It was admitted to the Union as the 42nd state in 1889. The first counties were created from unorganized territory in 1845.
The Federal Information Processing Standard (FIPS) code, used by the United States government to uniquely identify counties, is provided with each entry. The FIPS code links in the table point to U. S. Census "quick facts" pages for each county.
||FIPS code||County seat||Established||Origin||Meaning of name||Population||Area||Map|
|Adams County||001||Ritzville||1883||Whitman County||John Adams (1735–1826), 2nd U.S. President||18,728||1,925 sq mi
|Asotin County||003||Asotin||1883||Garfield County||The Nez Percé name for Eel Creek||21,623||636 sq mi
|Benton County||005||Prosser||1905||Yakima and Klickitat Counties||Thomas Hart Benton (1782–1858), a Missouri U.S. Senator||175,177||1,703 sq mi
|Chelan County||007||Wenatchee||1899||Okanogan and Kittitas Counties||A Native American word meaning "deep water", likely referring to Lake Chelan||72,453||2,922 sq mi
|Clallam County||009||Port Angeles||1854||Jefferson County||A Klallam word meaning "the strong people"||71,404||1,745 sq mi
|Clark County||011||Vancouver||1845||Original county||William Clark (1770–1838), the co-captain of the Lewis and Clark Expedition||425,363||628 sq mi
|Columbia County||013||Dayton||1875||Walla Walla County||The Columbia River||4,078||869 sq mi
|Cowlitz County||015||Kelso||1854||Original county||Cowlitz, an Indian tribe||102,410||1,139 sq mi
|Douglas County||017||Waterville||1883||Lincoln County||Stephen A. Douglas (1813–1861), U.S. Senator from Illinois||38,431||1,821 sq mi
|Ferry County||019||Republic||1899||Stevens County||Elisha P. Ferry (1825–1895), 1st Governor of Washington State||7,551||2,204 sq mi
|Franklin County||021||Pasco||1883||Whitman County||Benjamin Franklin (1706–1790), writer, orator, inventor, and U.S. Founding Father||78,163||1,242 sq mi
|Garfield County||023||Pomeroy||1881||Columbia County||James A. Garfield (1831–1881), 20th U.S. President||2,266||710 sq mi
|Grant County||025||Ephrata||1909||Douglas County||Ulysses S. Grant (1822–1885), 18th U.S. President||89,120||2,681 sq mi
|Grays Harbor County||027||Montesano||1854||Thurston County||Grays Harbor, a body of water named after explorer and merchant Robert Gray (1755–1806)||72,797||1,917 sq mi
|Island County||029||Coupeville||1853||Thurston County||Whidbey and Camano Islands||78,506||209 sq mi
|Jefferson County||031||Port Townsend||1852||Thurston County||Thomas Jefferson (1743–1826), 3rd U.S. President and principal author of the Declaration of Independence||29,872||1,809 sq mi
|King County||033||Seattle||1852||Thurston County||William R. King (1786–1853), U.S. Vice President under Franklin Pierce; officially renamed in 1986 after Martin Luther King, Jr. (1929–1968)||1,931,249||2,126 sq mi
|Kitsap County||035||Port Orchard||1857||King and Jefferson Counties||Chief Kitsap (d. 1860), leader of the Suquamish tribe||251,133||396 sq mi
|Kittitas County||037||Ellensburg||1883||Yakima County||Kittitas tribe word of uncertain meaning, with popular translations ranging from "white chalk" to "land of the plenty"||40,915||2,297 sq mi
|Klickitat County||039||Goldendale||1859||Walla Walla County||Klickitat Tribe||20,318||1,872 sq mi
|Lewis County||041||Chehalis||1845||Original county||Meriwether Lewis (1774–1809), the co-captain of the Lewis and Clark Expedition||75,455||2,408 sq mi
|Lincoln County||043||Davenport||1883||Whitman County||Abraham Lincoln (1809–1865), 16th U.S. President||10,570||2,311 sq mi
|Mason County||045||Shelton||1854||King County||Charles H. Mason (1830–1859), 1st Secretary of Washington Territory||60,699||961 sq mi
|Okanogan County||047||Okanogan||1888||Stevens County||A Salish Native American word meaning "rendezvous"||41,120||5,268 sq mi
|Pacific County||049||South Bend||1851||Lewis County||The Pacific Ocean||20,920||975 sq mi
|Pend Oreille County||051||Newport||1911||Stevens County||The Pend d'Oreille Native American tribe||13,001||1,400 sq mi
|Pierce County||053||Tacoma||1852||Thurston County||Franklin Pierce (1804–1869), 14th U.S. President||795,225||1,676 sq mi
|San Juan County||055||Friday Harbor||1873||Whatcom County||San Juan Island||15,769||175 sq mi
|Skagit County||057||Mount Vernon||1883||Whatcom County||The Skagit Native American tribe||116,901||1,735 sq mi
|Skamania County||059||Stevenson||1854||Clark County||A Chinookan word meaning "swift water"||11,066||1,656 sq mi
|Snohomish County||061||Everett||1861||Island County||The Snohomish tribe||713,335||2,090 sq mi
|Spokane County||063||Spokane||1879||Stevens County||The Spokane Native American tribe||471,221||1,764 sq mi
|Stevens County||065||Colville||1863||Walla Walla County||Isaac Stevens (1818–1862), 1st Governor of the Washington Territory||43,531||2,478 sq mi
|Thurston County||067||Olympia||1852||Lewis County||Samuel Thurston (1815–1851), the Oregon Territory's first delegate to U.S. Congress||252,264||727 sq mi
|Wahkiakum County||069||Cathlamet||1854||Cowlitz County||Leader of Wahkiakum ("Tall Timber"), Native American tribe||3,978||264 sq mi
|Walla Walla County||071||Walla Walla||1854||Skamania County||The Walla Walla Native American tribe, and also another name for running water||58,781||1,270 sq mi
|Whatcom County||073||Bellingham||1854||Island County||Nooksack word meaning "noisy water"||201,140||2,120 sq mi
|Whitman County||075||Colfax||1871||Stevens County||Marcus Whitman (1802–1847), a Presbyterian missionary||44,776||2,159 sq mi
|Yakima County||077||Yakima||1865||Ferguson County (defunct)||The Yakama Native American tribe||243,231||4,296 sq mi
Former county names change
Former counties change
- "Historical Timeline of Events Leading to the formation of Washington State". Archived from the original on February 7, 2012. Retrieved August 9, 2008.
- "EPA County FIPS Code Listing". US Environmental Protection Agency. Retrieved May 6, 2008.
- National Association of Counties. "NACo - Find A County". Retrieved March 4, 2011.
- Wilma, David (April 19, 2006). "Washington Territorial Legislature creates Sawamish (Mason) County on April 15, 1854". HistoryLink.org. Retrieved March 5, 2012.
- Wilma, David (July 27, 2006). "Slaughter County is renamed Kitsap County on July 13, 1857". HistoryLink.org. Retrieved March 16, 2012.
- Becker, Paula (September 20, 2005). "Ferguson County is established on January 23, 1863". HistoryLink.org. Retrieved March 5, 2012.
- "Milestones for Washington State History -- Part 2: 1851 to 1900". HistoryLink.org. March 6, 2003. Retrieved March 5, 2012.