Open main menu

Wyoming Territory

The Territory of Wyoming was an organized incorporated territory of the United States that existed from July 25, 1868, until July 10, 1890, when it was admitted to the Union as the State of Wyoming. Cheyenne was the territorial capital. The boundaries of the Wyoming Territory were identical to the modern State of Wyoming.

Territory of Wyoming
Organized incorporated territory of the United States
of Wyoming Territory
Coat of arms
1872 Wyoming Territory.jpg
Wyoming Territory in 1872
 • TypeOrganized incorporated territory
 • MottoCedant arma togae
("Let arms yield to the gown")
• Organic act
July 25 1868
• Statehood
July 10 1890
Preceded by
Succeeded by
Dakota Territory
Idaho Territory
Utah Territory
Wyoming (blue) with Idaho (yellow) and Montana (purple) in 1868


Because of Wyoming's location as part of the Louisiana Purchase, the Oregon Country, and the Mexican Cession, the land which became Wyoming has a complicated history of territorial relationships. Portions of the territory, which eventually fell under Wyoming's jurisdiction, were at various points associated with the territories of Washington, Oregon, Idaho, Dakota, Nebraska, and Utah, and had previously belonged to the independent states of Great Britain, France, Spain, Mexico, and Texas.

The portion of the Wyoming Territory east of the continental divide was acquired by the U.S. in the 1803 Louisiana Purchase and organized into the Nebraska Territory in 1854. On March 2, 1861, the northern portion of the Nebraska Territory, including the northeastern portion of future Wyoming Territory, became part of the Dakota Territory, while the southeastern portion remained with Nebraska, forming an extended Nebraska "panhandle" which included the settlement of Cheyenne. In 1863, the Idaho Territory was formed; it included the entirety of the modern states of Idaho and Montana and almost all of modern Wyoming save the southwest corner.

The portion of the Wyoming Territory west of the continental divide and north of the 42nd parallel was originally part of the Oregon Country, which was organized into the Oregon Territory in 1848; when Oregon entered the union as a state under its present boundaries in 1859, this land became part of the Washington Territory (although its eastern part had been granted to the Nebraska Territory in 1854. The Idaho Territory subsumed this land as well, in 1863.

The northern Rockies after the formation of the Dakota Territory from Nebraska Territory, in 1861

The southwestern corner of what became the Wyoming Territory, south of the 42nd parallel, became part of the United States with the 1848 Mexican Cession. An eastern section of this was once claimed by the Republic of Texas. In 1851, the portion of this land west of the continental divide was made part of the Utah Territory, and, with the organization of the Colorado Territory in 1861, most of it was transferred to the Nebraska Territory and subsumed into the Idaho Territory, in 1863. A small corner of Wyoming remained part of Utah until the creation of the Wyoming Territory, in 1868.

In 1869 the territory granted women's suffrage for all elections.[1]

1864 partition of the Idaho Territory. The blue area became part of Dakota Territory, and later part of Wyoming Territory

In 1864, with the formation of the Montana Territory, the southeastern section of the Idaho Territory (most of modern Wyoming) became briefly part of Dakota Territory once again, although a strip of land along the western border of what would become Wyoming remained part of the Idaho Territory.


1868 partition of the Utah Territory

The Territory of Wyoming was created by Act of Congress on July 25, 1868. At the time of its formation, it took land from the Dakota, Idaho, and Utah Territories. In 1872, Wyoming Territory had five counties: Albany, Carbon, Laramie, Sweetwater, and Uinta, each a tall narrow rectangle comprising approximately one-fifth of the territory.[2]

The territory was admitted to the Union as the 44th state on July 10, 1890.

See alsoEdit


  1. ^ Lemay, Kate Clarke; Goodier, Susan; Tetrault, Lisa; Jones, Martha (2019). Votes for Women: A Portrait of Persistence. Princeton University Press. p. 270. ISBN 9780691191171.
  2. ^ Nebraska, and the territories of Dakota, Idaho, Montana and Wyoming (Map). 1:3,000,000. Atlas of the United States. Cartography by H.F. Walling, O.W. Gray, and H.H. Lloyd & Co. Cincinnati: Stedman, Brown & Lyon. 1872.

External linksEdit