Coolidge, 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 Coolidge, AZ area code 520 serves most of southwest Arizona including the larger cities and communities of Casa Adobes, Casa Grande, Catalina Foothills, Coolidge, Douglas, Drexel Heights, Eloy, Florence, Nogales, Oro Valley, Sierra Vista and Tucson in addition to many smaller communities within the area code 520 service area.
Coolidge, AZ is located in Pinal County and observes the Mountain Time Zone and does not use daylight saving time. View our Times by Area Code tool.