The economy of the 520 area code region is driven by various sectors, including healthcare, education, aerospace and defense, mining, tourism, and agriculture. Major employers include the University of Arizona, Raytheon Missile Systems, Davis-Monthan Air Force Base, and several mining companies.
Area code 520 covers a significant portion of southeastern Arizona, including the Tucson metropolitan area, Nogales, Sierra Vista, Bisbee, Douglas, Willcox, and surrounding communities. It borders area codes 928 (northern Arizona), 480 and 623 (Phoenix metro area), as well as the Mexican state of Sonora.
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Area code 520 covers the southeastern region of Arizona, including the major city of Tucson. It borders area codes 928 to the north, 480 and 623 to the west, and the Mexican state of Sonora to the south. The region spans across Pima, Cochise, Graham, Greenlee, and Santa Cruz counties.
The region covered by area code 520 has a population of around 1.2 million as of 2022 estimates. The largest city is Tucson, with a population of over 540,000. The region has a diverse population, with a significant Hispanic/Latino presence, as well as Native American and Anglo communities.
Area code 520 observes Mountain Standard Time (MST) and does not follow Daylight Saving Time.
The 520 area code region boasts a unique blend of natural and cultural attractions. It is home to the Saguaro National Park, Kartchner Caverns State Park, and the historic presidio of Tubac. The region also has a rich Native American heritage, with several tribes and reservations located within its boundaries.
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