In 1885, the University of Arizona was founded as a land-grant college on over-grazed ranch land between Tucson and Fort Lowell. Veterans Administration had begun construction on the present Veterans Hospital.
In 1890, Asians made up 4.2% of the city's population. The population increased gradually to 13,913 in 1910. Many veterans who had been gassed in World War I, and were in need of respiratory therapy, began coming to Tucson after the war, because of the clean dry air.
In 1857, Tucson became a stage station on the San Antonio-San Diego Mail Line and in 1858 became 3rd division headquarters of the Butterfield Overland Mail until the line shut down in March 1861.
The Spanish name of the city, Tucsón Tucson was probably first visited by Paleo-Indians, known to have been in southern Arizona about 12,000 years ago.
Recent archaeological excavations near the Santa Cruz River have located a village site dating from 2100 BC.
The Tucson MSA forms part of the larger Tucson-Nogales combined statistical area (CSA), with a total population of 1,010,025 as of the 2010 Census.
Tucson is the second-largest populated city in Arizona behind Phoenix, both of which anchor the Arizona Sun Corridor.
Most notable, however, were the two holdups committed by masked road-agent William Whitney Brazelton.