Outline of Washington territorial evolution

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

An enlargeable map of the United States after the Treaty of Paris in 1789

An enlargeable map of the United States after the Anglo-American Convention of 1818

An enlargeable map of the United States after the Oregon Treaty of 1846

An enlargeable map of the United States after the Washington Organic Act in 1853

An enlargeable map of the United States after Washington Statehood in 1889

An enlargeable map of the United States as it has been since 1959

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^[1]
  • State of Washington since 1889^[2]

See also

• Historical outline of Washington
• History of Washington (state)
• Territorial evolution of the United States

Territorial evolution of Idaho

Territorial evolution of Oregon