The Territory of Kansas was a territory of the United States that existed from May 30, 1854, until January 29, 1861.[1] This was when the eastern portion of the territory was admitted to the Union as the state of Kansas.
The territory extended from the Missouri border west to the summit of the Rocky Mountains. North-south it ran from the 37th parallel north to the 40th parallel north. Much of the eastern region of what is now the State of Colorado was part of Kansas Territory. The western region of the former Kansas Territory, the Territory of Colorado, was created on February 28, 1861.[2]