Area code 602 is one of the original area codes assigned in 1947 and initially covered the entire Phoenix metro area in Arizona. Today, it serves primarily downtown Phoenix and nearby urban neighborhoods after splits and overlays (with 480 and 623) accommodated rapid growth. Ten-digit dialing is mandatory in this overlay complex. Area code 602 is associated with the state capital’s political, business, and cultural core and remains a prestigious and well-recognized identifier of Arizona’s urban heart.