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  5. Area Code 520

Where Is Area Code 520?

Area code 520 is found in the US state of Arizona. Primarily servicing the city of Tucson (population: 873192), area code 520 covers 5 counties of Arizona.

Located in the Mountain time zone, area code 520 is on the same time as Phoenix, AZ.

Area code 520 was brought into effect on March 19, 1995. 520 was split from the parent 602 area code.

Map of Arizona with area code 520 highlighted

Counties in Area Code 520

  • Cochise,
  • Maricopa,
  • Pima,
  • Pinal,
  • Santa Cruz.

Most Populous Cities in Area Code 520

City County City Population Time Zone
Tucson Pima 873,192 MST
Casa Grande Pinal 64,593 MST
Maricopa Pinal 53,204 MST
Sierra Vista Cochise 50,288 MST
Florence Pinal 34,591 MST
Green Valley Pima 28,568 MST
Sahuarita Pima 23,859 MST
Marana Pima 23,177 MST
Nogales Santa Cruz 22,997 MST
Vail Pima 22,022 MST
Douglas Cochise 21,349 MST
Rio Rico Santa Cruz 19,032 MST
Eloy Pinal 18,572 MST
Tucson Pinal 18,257 MST
Coolidge Pinal 15,280 MST
Arizona City Pinal 11,006 MST
Willcox Cochise 9,864 MST
Benson Cochise 9,523 MST
Hereford Cochise 9,466 MST
Bisbee Cochise 7,195 MST
Sells Pima 6,572 MST
Fort Huachuca Cochise 5,632 MST
Huachuca City Cochise 5,597 MST
Sacaton Pinal 4,683 MST
Ajo Pima 4,492 MST

Note: The above list is based off of the top 25 most populous cities in the area code as per 2012 United States Census Bureau estimates.

View all United States Area Codes.

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This page was last updated on July 3, 2015.