Washington Territory

Territory of Washington
Organized incorporated territory of the United States
1853–1889
Seal of the Washington Territory
Capital	Olympia
• Type	Organized incorporated territory
History
• Split from Oregon Territory	March 2,[1] 1853
• Idaho Territory split off	March 4, 1863
• Statehood	11 November 1889
Preceded by Succeeded by Oregon Territory Nebraska Territory Idaho Territory Washington (state)

The Territory of Washington was an organized incorporated territory of the United States that existed from March 2, 1853, until November 11, 1889, when the territory was admitted to the Union as the State of Washington. It was created from the portion of the Oregon Territory north of the lower Columbia River and north of the 46th parallel east of the Columbia. At its largest extent, it also included the entirety of modern Idaho and parts of Montana and Wyoming, before attaining its final boundaries in 1863.