Organized incorporated territories are those territories of the United States that are both incorporated (part of the United States proper) and organized (having an organized government authorized by an Organic Act passed by the U.S. Congress usually consisting of a territorial legislature, territorial governor, and a basic judicial system).

Through most of U.S. history, regions that were admitted as U.S. states were, prior to admission, territories of this kind. As the United States grew, the most populous parts of the organized territory would achieve statehood.

Many organized incorporated territories of the United States existed from 1789 to 1959, through which 31 territories applied for and achieved statehood. In the process of organizing and promoting territories to statehood, many unorganized territories were orphaned from the parts of a larger territory wherein the whole was ineligible, usually demographically lacking sufficient development and population densities at the time a vote could be taken petitioning Congress for statehood rights.

The following territories within the United States were officially organized by Congress with an Organic Act on the first date listed. Each was admitted as a U.S. state (of the same name, except where noted) on the second date listed. Often, larger outlying portions of a organized territory were not included in the new state.

•Northwest Territory (1787–1803) became the State of Ohio and the Indiana Territory
•Southwest Territory (1790–1796) became the State of Tennessee
•Mississippi Territory (1798–1817)
•Indiana Territory (1800–1816)
•Territory of Orleans (1804[1]–1812) became the State of Louisiana[2]
•Michigan Territory (1805–1837)
•Louisiana Territory (1805–1812), renamed Missouri Territory (1812–1821)
•Illinois Territory (1809–1818)
•Alabama Territory (1817–1819)
•Arkansas Territory (1819–1836)
•Florida Territory (1822–1845)
•Wisconsin Territory (1836–1848)
•Iowa Territory (1838–1846)
•Oregon Territory (1848–1859)
•Minnesota Territory (1849–1858)
•New Mexico Territory (1850–1912)
•Utah Territory (1850–1896)
•Washington Territory (1853–1889)
•Kansas Territory (1854–1861)
•Nebraska Territory (1854–1867)
•Colorado Territory (1861–1876)
•Nevada Territory (1861–1864)
•Dakota Territory (1861–1889) became the States of North Dakota and South Dakota
•Arizona Territory (1863–1912)
•Idaho Territory (1863–1890)
•Montana Territory (1864–1889)
•Wyoming Territory (1868–1890)
•Oklahoma Territory (1889–1907)
•Hawaii Territory (1900–1959)
•Alaska Territory (1912–1959)

NOTE: PUERTO RICO IS A UNINCORPORATED TERRITORY-the Constitution applies fully only in incorporated territories such as Alaska and Hawaii, and applies only partially in the new unincorporated territories of Puerto Rico, Guam and the Philippines

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