Original: Tucson is a city in and the county seat of Pima County, Arizona, United States, located 118 miles (188 km) southeast of Phoenix and 60 miles (98 km) north of the U.S.-Mexico border.
Simplified: Tucson is the seat of Pima county, United States, located 118 miles (188 km) southeast of Phoenix and 60 miles (98 km) north of the Mexican border.