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 .