Overview of and topical guide to Oregon territorial evolution
Legend for maps
U.S. state
U.S. territory
Claimed by other countries
Disputed
An enlargeable map of the United States after the Treaty of Paris in 1789
The following outline traces the territorial evolution of the U.S. state of Oregon.
Outline
An enlargeable map of the United States after the Anglo-American Convention of 1818An enlargeable map of the United States after the Adams-Onís Treaty took effect in 1821An enlargeable map of the United States after the Oregon Treaty of 1846An enlargeable map of the United States after the Oregon Organic Act in 1848An enlargeable map of the United States after Oregon Statehood in 1859An enlargeable map of the United States as it has been since 1959
Historical territorial claims of Spain in the present state of Oregon: