Tucson (
pronounced , Spanish: Tucsón ) is the seat of
Pima County, Arizona,
United States, located 118 miles (188
km) southeast of
Phoenix and 60 miles (98 km) north of the
Mexican border. As of
July 1 2006, a
Census Bureau estimate puts the city's population at 518,956, with a
metropolitan area population at 946,362. In 2005, Tucson ranked as the
32nd-largest city and
52nd-largest metropolitan area in the
U.S. It is the largest city in southern
Arizona and the second largest in the state. Tucson is the site of the flagship school of the state university system, the
University of Arizona. Major incorporated suburbs of Tucson include
Oro Valley and
Marana northwest of the city,
South Tucson (surrounded by Tucson), and
Sahuarita south of the city. Communities in the vicinity of Tucson (some within or overlapping the city limits) include
Casas Adobes,
Catalina,
Catalina Foothills,
Flowing Wells,
Green Valley,
Marana,
Tanque Verde,
New Pascua, and
Vail.
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