As of 2015, there are 55 area codes in the Tucson, Arizona area. The first three digits of these ZIP codes are all 857. These ZIP codes are available on the United States Postal Service's website via the Look Up a ZIP Code tool.
Tucson, Arizona is located 60 miles from the Mexico-United States border. In 2010, Tucson had a population of more than 500,000 and a land area of about 220 square miles. Much of the city's economy is based on the optics industry, and more than 150 of the companies located in the Tucson area are involved in this industry. The city has one daily newspaper.