Download Excel File List of Counties in Washington

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S.No.,County,FIPS code,County seat,Land area,Population(2020),Established Year,Formed from1,Adams County,001,Ritzville,"1,925sqmi(4,986km)","20,613",1883,Whitman County2,Asotin County,003,Asotin,"636sqmi(1,647km)","22,285",1883,Garfield County3,Benton County,005,Prosser,"1,700sqmi(4,403km)","206,873",1905,Yakima and Klickitat Counties4,Chelan County,007,Wenatchee,"2,920sqmi(7,563km)","79,074",1899,Okanogan and Kittitas Counties5,Clallam County,009,Port Angeles,"1,738sqmi(4,501km)","77,155",1854,Jefferson County6,Clark County,011,Vancouver,"629sqmi(1,629km)","503,311",1845,Original County7,Columbia County,013,Dayton,"869sqmi(2,251km)","3,952",1875,Walla Walla County8,Cowlitz County,015,Kelso,"1,139sqmi(2,950km)","110,730",1854,Lewis County9,Douglas County,017,Waterville,"1,819sqmi(4,711km)","42,938",1883,Lincoln County10,Ferry County,019,Republic,"2,204sqmi(5,708km)","7,178",1899,Stevens County11,Franklin County,021,Pasco,"1,242sqmi(3,217km)","96,749",1883,Whitman County12,Garfield County,023,Pomeroy,"710sqmi(1,839km)","2,286",1881,Columbia County13,Grant County,025,Ephrata,"2,680sqmi(6,941km)","99,123",1909,Douglas County14,Grays Harbor County,027,Montesano,"1,902sqmi(4,926km)","75,636",1854,Thurston County15,Island County,029,Coupeville,"209sqmi(541km)","86,857",1852,Thurston County16,Jefferson County,031,Port Townsend,"1,804sqmi(4,672km)","32,977",1852,Thurston County17,King County,033,Seattle,"2,115sqmi(5,478km)","2,269,675",1852,Thurston County18,Kitsap County,035,Port Orchard,"395sqmi(1,023km)","275,611",1857,King and Jefferson Counties19,Kittitas County,037,Ellensburg,"2,297sqmi(5,949km)","44,337",1883,Yakima County20,Klickitat County,039,Goldendale,"1,872sqmi(4,848km)","22,735",1859,Walla Walla County21,Lewis County,041,Chehalis,"2,403sqmi(6,224km)","82,149",1845,Clark County22,Lincoln County,043,Davenport,"2,311sqmi(5,985km)","10,876",1883,Whitman County23,Mason County,045,Shelton,"959sqmi(2,484km)","65,726",1854,King County24,Okanogan County,047,Okanogan,"5,268sqmi(13,644km)","42,104",1888,Stevens County25,Pacific County,049,South Bend,"933sqmi(2,416km)","23,365",1851,Lewis County26,Pend Oreille County,051,Newport,"1,400sqmi(3,626km)","13,401",1911,Stevens County27,Pierce County,053,Tacoma,"1,670sqmi(4,325km)","921,130",1852,Thurston County28,San Juan County,055,Friday Harbor,"174sqmi(451km)","17,788",1873,Whatcom County29,Skagit County,057,Mount Vernon,"1,731sqmi(4,483km)","129,523",1883,Whatcom County30,Skamania County,059,Stevenson,"1,656sqmi(4,289km)","12,036",1854,Clark County31,Snohomish County,061,Everett,"2,087sqmi(5,405km)","827,957",1861,Island and King Counties32,Spokane County,063,Spokane,"1,764sqmi(4,569km)","539,339",1879,Stevens County33,Stevens County,065,Colville,"2,478sqmi(6,418km)","46,445",1863,Walla Walla County34,Thurston County,067,Olympia,"722sqmi(1,870km)","294,793",1852,Lewis County35,Wahkiakum County,069,Cathlamet,"264sqmi(684km)","4,422",1854,Cowlitz County36,Walla Walla County,071,Walla Walla,"1,270sqmi(3,289km)","62,584",1854,Skamania County37,Whatcom County,073,Bellingham,"2,107sqmi(5,457km)","226,847",1854,Island County38,Whitman County,075,Colfax,"2,159sqmi(5,592km)","47,973",1871,Stevens County39,Yakima County,077,Yakima,"4,296sqmi(11,127km)","256,728",1865,Ferguson County (defunct)40,Washington (state),53,Olympia (state capital),"66,544sqmi (172,350km)","7,705,281",1853,Oregon Territory,,,,,,,https://www.downloadexcelfiles.com/,,,,,,,