Until otherwise provided by law, the state shall be divided into twenty-four (24) senatorial districts, and said districts shall be constituted and numbered as follows: The counties of Stevens and Spokane shall constitute the first district, and be entitled to one senator; the county of Spokane shall constitute the second district, and be entitled to three senators; the county of Lincoln shall constitute the third district, and be entitled to one senator; the counties of Okanogan, Lincoln, Adams and Franklin shall constitute the fourth district, and be entitled to one senator; the county of Whitman shall constitute the fifth district, and be entitled to three senators; the counties of Garfield and Asotin shall constitute the sixth district, and be entitled to one senator; the county of Columbia shall constitute the seventh district, and be entitled to one senator; the county of Walla Walla shall constitute the eighth district, and be entitled to two senators; the counties of Yakima and Douglas shall constitute the ninth district, and be entitled to one senator; the county of Kittitas shall constitute the tenth district and be entitled to one senator; the counties of Klickitat, and Skamania shall constitute the eleventh district, and be entitled to one senator; the county of Clarke shall constitute the twelfth district, and be entitled to one senator; the county of Cowlitz shall constitute the thirteenth district, and be entitled to one senator; the county of Lewis shall constitute the fourteenth district, and be entitled to one senator; the counties of Pacific and Wahkiakum shall constitute the fifteenth district, and be entitled to one senator; the county of Thurston shall constitute the sixteenth district, and be entitled to one senator; the county of Chehalis shall constitute the seventeenth district, and be entitled to one senator; the county of Pierce shall constitute the eighteenth district, and be entitled to three senators; the county of King shall constitute the nineteenth district, and be entitled to five senators; the counties of Mason and Kitsap shall constitute the twentieth district, and be entitled to one senator; the counties of Jefferson, Clallam and San Juan shall constitute the twenty-first district, and be entitled to one senator; the county of Snohomish shall constitute the twenty-second district, and shall be entitled to one senator; the counties of Skagit and Island shall constitute the twenty-third district, and be entitled to one senator; the county of Whatcom shall constitute the twenty-fourth district, and be entitled to one senator.
Structure Washington state constitution