Arizona Territory

The Arizona Territory was a former incarnation of Arizona that existed from 1863 until 1912. The land was originally part of New Mexico Territory from 1850 until 1863, when the territory split away from the land with five counties. In 1866, parts of the northwestern section were given to the State of Nevada, which includes Las Vegas. Eventually, by the time statehood was reached on February 14, 1912, the county count became fourteen. And after that date, the territory was no more.