Washington County Map

Eighteenth largest state by area, Washington is the northwestern-most state in the contiguous United States. There are 39 counties in “The Evergreen State.” The first two counties (Clark County and…




Eighteenth largest state by area, Washington is the northwestern-most state in the contiguous United States. There are 39 counties in “The Evergreen State.” The first two counties (Clark County and Lewis County) were created from an unorganized territory in 1845. These counties were named after the Lewis and Clark Expedition. Carved out of Stevens County in 1911, Pend Oreille County is the most recently formed.

King County is the most populous and the 13th most populous county in the US. Seattle, the the seat of King County, is the largest city in the Pacific Northwest region. Garfield County is both the least populous and the least densely populated county in Washington. Okanogan County, at 5,268 square miles, is the largest county by area in the state. San Juan County, the smallest by area, is the only county in Washington not served by state highways, due to its location in the Salish Sea. Mount Rainier, the tallest mountain in the Cascade Range, is located in Pierce County.

 

Counties in Eastern Washington:

Adams Franklin Pend Oreille
Asotin Garfield Spokane
Benton Grant Stevens
Chelan Kittitas Walla Walla
Columbia Klickitat Whitman
Douglas Lincoln Yakima
Ferry Okanogan

 

Counties in Western Washington:

Clallam Kitsap Skamania
Clark Lewis Snohomish
Cowlitz Mason Thurston
Grays Harbor Pacific Wahkiakum
Island Pierce Whatcom
Jefferson San Juan
King Skagit

 

List of Counties in Washington

County Name Population
(2016)
Area
(sq. mi.)
Adams County Map 19,238 1924.96
Asotin County Map 22,306 635.34
Benton County Map 193,686 1703.09
Chelan County Map 76,338 2921.37
Clallam County Map 74,570 1739.45
Clark County Map 467,018 628.22
Columbia County Map 3,938 868.81
Cowlitz County Map 105,160 1138.64
Douglas County Map 41,327 1820.53
Ferry County Map 7,614 2203.98
Franklin County Map 90,160 1242.4
Garfield County Map 2,247 710.55
Grant County Map 93,546 2681.06
Grays Harbor County Map 71,628 1916.89
Island County Map 82,636 208.43
Jefferson County Map 31,139 1814.23
King County Map 2,149,970 2126.04
Kitsap County Map 264,811 395.97
Kittitas County Map 44,866 2297.19
Klickitat County Map 21,301 1872.37
Lewis County Map 77,066 2407.64
Lincoln County Map 10,350 2311.21
Mason County Map 62,198 961.06
Okanogan County Map 41,554 5268.07
Pacific County Map 21,249 932.97
Pend Oreille County Map 13,123 1400.27
Pierce County Map 861,312 1678.91
San Juan County Map 16,339 174.92
Skagit County Map 123,681 1735.14
Skamania County Map 11,510 1656.44
Snohomish County Map 787,620 2089.06
Spokane County Map 499,072 1763.64
Stevens County Map 44,439 2478.3
Thurston County Map 275,222 727.02
Wahkiakum County Map 4,139 264.24
Walla Walla County Map 60,340 1270.51
Whatcom County Map 216,800 2119.53
Whitman County Map 48,851 2159.37
Yakima County Map 249,636 4296.23

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