New Mexico Territory
The Territory of New Mexico was an organized incorporated territory of the United States that existed (with varying boundaries) from September 9, 1850, until January 6, 1912, when the remaining extent of the territory was admitted to the Union as the State of New Mexico, making it the longest-lived organized incorporated territory of the United States, lasting approximately 62 years.
|Territory of New Mexico|
|Organized incorporated territory of the United States|
A map of the later Federal Arizona and New Mexico Territories, split from the original New Mexico Territory of 1851, showing existing counties.
|• Type||Organized incorporated territory|
|James S. Calhoun|
|William J. Mills|
|Legislature||New Mexico Territorial Legislature|
|May 30 1848|
|September 9 1850|
|June 24 1853|
• Colorado Territory established
|February 28 1861|
• Arizona Territory established
|February 24 1863|
|January 6 1912|
- David L. Caffey, Chasing the Santa Fe Ring: Power and Privilege in Territorial New Mexico. Albuquerque, NM: University of New Mexico Press, 2014.