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Casa Grande, AZ is currently using one area code which is area code 520. Area code 520 was created from a split
of area code 602 in 1995. In addition to Casa Grande, AZ area code 520 serves the major cities of Bisbee, Casa Adobes, Catalina Foothills, Coolidge, Douglas, Drexel Heights, Eloy, Florence, Nogales, Oro
Valley, Sierra Vista and Tucson. Casa Grande, AZ does not utilize any area code overlays. |
