The following outline traces the territorial evolution of the U.S. State of Washington.

Outline

Historical international territory in the present State of Washington:

Oregon Country, 1818-1846

• Anglo-American Convention of 1818

• Provisional Government of Oregon (extralegal), 1843-1849

• Oregon Treaty of 1846

Historical political divisions of the United States in the present State of Washington:

• Unorganized territory created by the Oregon Treaty, 1846-1848

• Territory of Oregon, 1848-1859

• Territory of Washington, 1853-1889

• State of Washington since 1889

See also

• Historical outline of Washington

• History of Washington (state)

• Territorial evolution of the United States

• Territorial evolution of Idaho

• Territorial evolution of Oregon

References

External links

State of Washington website

• Washington Secretary of State History website

• Washington Historical Society

  Washington State History