Tucson, Arizona

Tucson is a city in Pima County, Arizona, United States, and its county seat. It is the second-most populous city in Arizona with a population of 542,630 at the 2020 census, while the Tucson metropolitan statistical area has an estimated 1.08 million residents and is the 52nd-largest metropolitan area in the U.S. Tucson and Phoenix anchor the Arizona Sun Corridor. The city is 108 miles (174 km) southeast of Phoenix and 60 mi (100 km) north of the United States–Mexico border. It is home to the University of Arizona.