Washington County Creation Dates and Parent CountiesEdit This Page

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Name of County Date Formed Parent County Progeny County
Adams 28 Nov 1883 Whitman none
Asotin 27 Oct 1883 Garfield none
Benton 08 Mar 1905 Yakima, Klickitat none
Chehalis 14 Apr 1854 Washington Territory renamed Gray’s Harbor 1915
Chelan 13 Mar 1899 Kittitas, Okanogan none
Clallam 26 Apr 1854 Jefferson none
Clark 03 Sep 1849 renamed from Vancouver Skamania 1854
Columbia 11 Nov 1875 Walla Walla Garfield 1881
Cowlitz 21 Apr 1854 Lewis none
Douglas 28 Nov 1883 Lincoln Grant 1909
Ferry 21 Feb 1899 Stevens none
Franklin 28 Nov 1883 Whitman none
Garfield 29 Nov 1881 Columbia Asotin 1883
Grant 24 Feb 1909 Grant none
Grays Harbor 15 Mar 1915 renamed from Chehalis none
Island 06 Jan 1853 Washington Territory Snohomish 1861
Jefferson 22 Dec 1852 Washington Territory Clallam 1854
King 22 Dec 1852 Washington Territory Kitsap 1857
Kitsap 13 Jul 1857 renamed from Slaughter 1857 none
Kittitas 24 Nov 1883 Yakima Chelan 1899
Klickitat 20 Dec 1859 Walla walla Benton 1905
Lewis 21 Dec 1845 Oregon Territory Cowlitz 1854, Wahkiakum 1854
Lincoln 24 Nov 1883 Spokane Douglas 1883
Mason 08 Jan 1864 renamed from Sawamish none
Okanogan 02 Feb 1888 Stevens Chelan 1899
Pacific 04 Feb 1851 Washington Territory none
Pend Oreille 01 Mar 1911 Stevens none
Pierce 22 Dec 1852 Washington Territory none
San Juan 31 Oct 1873 Whatcom none
Sawamish 22 Dec 1852 Thurston renamed Mason 1864
Skagit 28 Nov 1883 Whatcom none
Skamania 09 Mar 1854 Clark none
Slaughter 16 Jan 1857 King renamed Kitsap 1857
Snohomish 14 Jan 1861 Island none
Spokane 29 Jan 1858 Walla Walla Lincoln 1883
Stevens 20 Jan 1863 Walla Walla Ferry 1899, Okanogan 1888, Pend Oreille 1911, Whitman 1871
Thurston 12 Jan 1852 Washington Territory Sawamish 1852
Vancouver 21 Dec 1845 Oregon Territory renamed Clark 1849
Wahkiakum 26 Apr 1854 Lewis none
Walla Walla 25 Apr 1854 Washington Territory Columbia 1875, Klickitat 1859, Spokane 1859, Stevens 1863, Yakima 1865
Whatcom 09 Mar 1854 Washington Territory San Juan 1873, Skagit 1883
Whitman 29 Nov 1871 Stevens Adams 1883, Franklin 1883
Yakima 21 Jan 1865 Walla Walla Benton 1905, Kittitas 1883
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  • This page was last modified on 14 March 2009, at 07:49.
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